Built 2026-10-16 (16 October 2026)

Rosalia Weather Records (USC00457180)

Record envelope, standing records and threshold days for Rosalia (USC00457180), Washington, United States, with 134 years of record.

Key Facts for Rosalia

  • Rosalia (USC00457180) is a weather station in Washington, United States at 47.23 latitude and -117.36 longitude, 738 m (2,420 ft) above sea level.
  • The station reports from 1893 to 2026, 134 years of record.
  • 1,464 records set at Rosalia still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Rosalia set a daily record high minimum temperature of 17.2 C (63.0 F) on 22 August 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: Washington, United States, 47.23 latitude, -117.36 longitude.
  • Elevation: 738 m (2,420 ft).
  • Period of record: 1893 to 2026, 134 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

4 days at or beyond a record
Daily record high and record low at Rosalia, with 2026 drawn through them The band shows the record high and record low for each calendar day at Rosalia. The lines show the 2026 daily maximum and minimum. 4 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Rosalia. The lines show the 2026 daily maximum and minimum. 4 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Rosalia, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan15.6 C (60.1 F)-32.2 C (-26.0 F)11.7 C (53.1 F)-10.0 C (14.0 F)
Feb18.9 C (66.0 F)-31.7 C (-25.1 F)12.8 C (55.0 F)-10.6 C (12.9 F)
Mar25.0 C (77.0 F)-20.0 C (-4.0 F)17.8 C (64.0 F)-5.0 C (23.0 F)
Apr34.4 C (93.9 F)-12.2 C (10.0 F)25.6 C (78.1 F)-5.0 C (23.0 F)
May36.7 C (98.1 F)-5.6 C (21.9 F)30.0 C (86.0 F)1.7 C (35.1 F)
Jun41.7 C (107.1 F)-2.8 C (27.0 F)31.1 C (88.0 F)3.9 C (39.0 F)
Jul43.9 C (111.0 F)-1.7 C (28.9 F)36.7 C (98.1 F)5.6 C (42.1 F)
Aug42.2 C (108.0 F)-0.6 C (30.9 F)38.3 C (100.9 F)3.9 C (39.0 F)
Sep40.6 C (105.1 F)-11.7 C (10.9 F)30.0 C (86.0 F)-0.6 C (30.9 F)
Oct32.2 C (90.0 F)-16.1 C (3.0 F)n/an/a
Nov22.2 C (72.0 F)-26.1 C (-15.0 F)n/an/a
Dec17.8 C (64.0 F)-33.9 C (-29.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Rosalia by the year they were set 1,464 records at Rosalia still stand. 1936 holds the most, with 30. 01020301893: 91894: 91895: 121896: 151897: 91898: 71899: 211900: 151901: 71902: 141903: 91904: 101905: 161906: 181907: 71908: 111909: 121910: 81911: 81912: 41913: 121914: 51915: 31916: 211917: 211918: 181919: 241920: 61921: 111922: 141923: 71924: 201925: 91926: 161927: 111928: 121929: 181930: 171931: 111932: 111933: 151934: 211935: 141936: 301937: 171938: 91939: 151940: 141941: 141942: 21943: 111944: 71945: 71946: 121947: 71948: 61949: 91950: 171951: 71952: 81953: 71954: 41955: 131956: 81957: 131958: 141959: 91960: 101961: 101962: 31963: 81964: 51965: 121966: 71967: 41968: 151969: 71970: 81971: 181972: 91973: 61974: 81975: 81976: 31977: 171978: 81979: 91980: 151981: 141982: 21983: 111984: 61985: 241986: 101987: 161988: 131989: 111990: 101991: 41992: 141993: 61994: 61995: 81996: 101997: 31998: 111999: 132000: 32001: 92002: 202003: 92004: 62005: 102006: 132007: 62008: 182009: 102010: 82011: 202012: 72013: 52014: 42015: 182016: 122017: 82018: 32019: 72020: 112021: 172022: 132023: 132024: 142025: 142026: 61893190719211935194919631977199120052019
1,464 records at Rosalia still stand. 1936 holds the most, with 30.
Standing records at Rosalia by the year they were set
Year setStanding records
18939
18949
189512
189615
18979
18987
189921
190015
19017
190214
19039
190410
190516
190618
19077
190811
190912
19108
19118
19124
191312
19145
19153
191621
191721
191818
191924
19206
192111
192214
19237
192420
19259
192616
192711
192812
192918
193017
193111
193211
193315
193421
193514
193630
193717
19389
193915
194014
194114
19422
194311
19447
19457
194612
19477
19486
19499
195017
19517
19528
19537
19544
195513
19568
195713
195814
19599
196010
196110
19623
19638
19645
196512
19667
19674
196815
19697
19708
197118
19729
19736
19748
19758
19763
197717
19788
19799
198015
198114
19822
198311
19846
198524
198610
198716
198813
198911
199010
19914
199214
19936
19946
19958
199610
19973
199811
199913
20003
20019
200220
20039
20046
200510
200613
20076
200818
200910
20108
201120
20127
20135
20144
201518
201612
20178
20183
20197
202011
202117
202213
202313
202414
202514
20266

All-Time Record Progression

13 new records
When Rosalia set new all-time records 13 all-time records were set at Rosalia between 3 July 1924 and 1 July 2021. Each dot is a new record. Record high minimum temperatureRecord high maximum temperatureRecord low maximum temperatureRecord daily snowfallRecord low minimum temperature3 July 1924: Record high minimum temperature 20.6 C (69.1 F)17 July 1925: Record high minimum temperature 21.7 C (71.1 F)26 July 1928: Record high maximum temperature 41.7 C (107.1 F)27 July 1928: Record high minimum temperature 24.4 C (75.9 F)27 July 1934: Record high maximum temperature 42.2 C (108.0 F)20 January 1937: Record low maximum temperature -18.3 C (-0.9 F)1 February 1963: Record daily snowfall 27.9 cm (11.0 in)30 December 1968: Record low maximum temperature -19.4 C (-2.9 F)30 December 1968: Record low minimum temperature -32.8 C (-27.0 F)31 December 1968: Record low minimum temperature -33.9 C (-29.0 F)3 February 1989: Record low maximum temperature -20.0 C (-4.0 F)18 December 2008: Record daily snowfall 45.7 cm (18.0 in)1 July 2021: Record high maximum temperature 43.9 C (111.0 F)193519501965198019952010
13 all-time records were set at Rosalia between 3 July 1924 and 1 July 2021. Each dot is a new record.
When Rosalia set new all-time records
DateKindDetail
1924-07-03Record high minimum temperatureRecord high minimum temperature 20.6 C (69.1 F)
1925-07-17Record high minimum temperatureRecord high minimum temperature 21.7 C (71.1 F)
1928-07-26Record high maximum temperatureRecord high maximum temperature 41.7 C (107.1 F)
1928-07-27Record high minimum temperatureRecord high minimum temperature 24.4 C (75.9 F)
1934-07-27Record high maximum temperatureRecord high maximum temperature 42.2 C (108.0 F)
1937-01-20Record low maximum temperatureRecord low maximum temperature -18.3 C (-0.9 F)
1963-02-01Record daily snowfallRecord daily snowfall 27.9 cm (11.0 in)
1968-12-30Record low maximum temperatureRecord low maximum temperature -19.4 C (-2.9 F)
1968-12-30Record low minimum temperatureRecord low minimum temperature -32.8 C (-27.0 F)
1968-12-31Record low minimum temperatureRecord low minimum temperature -33.9 C (-29.0 F)
1989-02-03Record low maximum temperatureRecord low maximum temperature -20.0 C (-4.0 F)
2008-12-18Record daily snowfallRecord daily snowfall 45.7 cm (18.0 in)
2021-07-01Record high maximum temperatureRecord high maximum temperature 43.9 C (111.0 F)

Wettest Day of Each Month

Jul: 61.5 mm (2.4 in)
Record daily precipitation for each month at Rosalia The wettest day on record for each calendar month at Rosalia. The most was 61.5 mm (2.4 in) on 29 July 1907. 020406080 Jan: 39.9 mm (1.6 in), 7 January 1948 Jan Feb: 33.0 mm (1.3 in), 25 February 1919 Feb Mar: 36.8 mm (1.4 in), 10 March 1989 Mar Apr: 28.4 mm (1.1 in), 2 April 1923 Apr May: 54.4 mm (2.1 in), 31 May 1996 May Jun: 45.7 mm (1.8 in), 1 June 1923 Jun Jul: 61.5 mm (2.4 in), 29 July 1907 Jul Aug: 30.0 mm (1.2 in), 24 August 1989 Aug Sep: 34.0 mm (1.3 in), 11 September 1927 Sep Oct: 51.6 mm (2.0 in), 31 October 1921 Oct Nov: 41.7 mm (1.6 in), 22 November 1901 Nov Dec: 46.5 mm (1.8 in), 6 December 1933 Dec
The wettest day on record for each calendar month at Rosalia. The most was 61.5 mm (2.4 in) on 29 July 1907.
Record daily precipitation for each month at Rosalia
MonthRecord daily precipitation (mm)Date
Jan39.9 mm (1.6 in)7 January 1948
Feb33.0 mm (1.3 in)25 February 1919
Mar36.8 mm (1.4 in)10 March 1989
Apr28.4 mm (1.1 in)2 April 1923
May54.4 mm (2.1 in)31 May 1996
Jun45.7 mm (1.8 in)1 June 1923
Jul61.5 mm (2.4 in)29 July 1907
Aug30.0 mm (1.2 in)24 August 1989
Sep34.0 mm (1.3 in)11 September 1927
Oct51.6 mm (2.0 in)31 October 1921
Nov41.7 mm (1.6 in)22 November 1901
Dec46.5 mm (1.8 in)6 December 1933

Period of Record Coverage

1893 to 2026
Days with data per year at Rosalia 134 years of record at Rosalia, 1893 to 2026. 6 years have data for under 90 percent of days and are left out of rankings: 1947, 1948, 1950, 2000, 2023, 2026. 1893: 363 of 365 days1894: 363 of 365 days1895: 364 of 365 days1896: 364 of 366 days1897: 359 of 365 days1898: 361 of 365 days1899: 365 of 365 days1900: 365 of 365 days1901: 364 of 365 days1902: 363 of 365 days1903: 363 of 365 days1904: 364 of 366 days1905: 363 of 365 days1906: 356 of 365 days1907: 358 of 365 days1908: 361 of 366 days1909: 362 of 365 days1910: 363 of 365 days1911: 362 of 365 days1912: 366 of 366 days1913: 365 of 365 days1914: 365 of 365 days1915: 365 of 365 days1916: 366 of 366 days1917: 364 of 365 days1918: 364 of 365 days1919: 356 of 365 days1920: 360 of 366 days1921: 361 of 365 days1922: 364 of 365 days1923: 362 of 365 days1924: 362 of 366 days1925: 351 of 365 days1926: 360 of 365 days1927: 361 of 365 days1928: 364 of 366 days1929: 352 of 365 days1930: 361 of 365 days1931: 360 of 365 days1932: 363 of 366 days1933: 355 of 365 days1934: 360 of 365 days1935: 354 of 365 days1936: 358 of 366 days1937: 358 of 365 days1938: 359 of 365 days1939: 358 of 365 days1940: 364 of 366 days1941: 364 of 365 days1942: 364 of 365 days1943: 364 of 365 days1944: 363 of 366 days1945: 359 of 365 days1946: 356 of 365 days1947: 272 of 365 days1948: 292 of 366 days1949: 335 of 365 days1950: 297 of 365 days1951: 365 of 365 days1952: 365 of 366 days1953: 365 of 365 days1954: 365 of 365 days1955: 364 of 365 days1956: 366 of 366 days1957: 365 of 365 days1958: 364 of 365 days1959: 365 of 365 days1960: 366 of 366 days1961: 364 of 365 days1962: 364 of 365 days1963: 365 of 365 days1964: 366 of 366 days1965: 365 of 365 days1966: 363 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 365 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 336 of 366 days1973: 365 of 365 days1974: 355 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 364 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 365 of 366 days1981: 364 of 365 days1982: 361 of 365 days1983: 364 of 365 days1984: 366 of 366 days1985: 364 of 365 days1986: 365 of 365 days1987: 365 of 365 days1988: 366 of 366 days1989: 365 of 365 days1990: 334 of 365 days1991: 362 of 365 days1992: 335 of 366 days1993: 365 of 365 days1994: 365 of 365 days1995: 364 of 365 days1996: 365 of 366 days1997: 365 of 365 days1998: 363 of 365 days1999: 365 of 365 days2000: 324 of 366 days2001: 365 of 365 days2002: 364 of 365 days2003: 364 of 365 days2004: 364 of 366 days2005: 363 of 365 days2006: 364 of 365 days2007: 363 of 365 days2008: 362 of 366 days2009: 361 of 365 days2010: 364 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 364 of 365 days2014: 364 of 365 days2015: 363 of 365 days2016: 363 of 366 days2017: 359 of 365 days2018: 350 of 365 days2019: 349 of 365 days2020: 349 of 366 days2021: 362 of 365 days2022: 363 of 365 days2023: 326 of 365 days2024: 364 of 366 days2025: 365 of 365 days2026: 271 of 365 days1900192019401960198020002020
134 years of record at Rosalia, 1893 to 2026. 6 years have data for under 90 percent of days and are left out of rankings: 1947, 1948, 1950, 2000, 2023, 2026.
Days with data per year at Rosalia
YearDays with dataShare of yearComplete
189336399%Yes
189436399%Yes
1895364100%Yes
189636499%Yes
189735998%Yes
189836199%Yes
1899365100%Yes
1900365100%Yes
1901364100%Yes
190236399%Yes
190336399%Yes
190436499%Yes
190536399%Yes
190635698%Yes
190735898%Yes
190836199%Yes
190936299%Yes
191036399%Yes
191136299%Yes
1912366100%Yes
1913365100%Yes
1914365100%Yes
1915365100%Yes
1916366100%Yes
1917364100%Yes
1918364100%Yes
191935698%Yes
192036098%Yes
192136199%Yes
1922364100%Yes
192336299%Yes
192436299%Yes
192535196%Yes
192636099%Yes
192736199%Yes
192836499%Yes
192935296%Yes
193036199%Yes
193136099%Yes
193236399%Yes
193335597%Yes
193436099%Yes
193535497%Yes
193635898%Yes
193735898%Yes
193835998%Yes
193935898%Yes
194036499%Yes
1941364100%Yes
1942364100%Yes
1943364100%Yes
194436399%Yes
194535998%Yes
194635698%Yes
194727275%No
194829280%No
194933592%Yes
195029781%No
1951365100%Yes
1952365100%Yes
1953365100%Yes
1954365100%Yes
1955364100%Yes
1956366100%Yes
1957365100%Yes
1958364100%Yes
1959365100%Yes
1960366100%Yes
1961364100%Yes
1962364100%Yes
1963365100%Yes
1964366100%Yes
1965365100%Yes
196636399%Yes
1967365100%Yes
1968366100%Yes
1969365100%Yes
1970365100%Yes
1971365100%Yes
197233692%Yes
1973365100%Yes
197435597%Yes
1975365100%Yes
1976366100%Yes
1977364100%Yes
1978365100%Yes
1979365100%Yes
1980365100%Yes
1981364100%Yes
198236199%Yes
1983364100%Yes
1984366100%Yes
1985364100%Yes
1986365100%Yes
1987365100%Yes
1988366100%Yes
1989365100%Yes
199033492%Yes
199136299%Yes
199233592%Yes
1993365100%Yes
1994365100%Yes
1995364100%Yes
1996365100%Yes
1997365100%Yes
199836399%Yes
1999365100%Yes
200032489%No
2001365100%Yes
2002364100%Yes
2003364100%Yes
200436499%Yes
200536399%Yes
2006364100%Yes
200736399%Yes
200836299%Yes
200936199%Yes
2010364100%Yes
2011365100%Yes
2012366100%Yes
2013364100%Yes
2014364100%Yes
201536399%Yes
201636399%Yes
201735998%Yes
201835096%Yes
201934996%Yes
202034995%Yes
202136299%Yes
202236399%Yes
202332689%No
202436499%Yes
2025365100%Yes
202627174%No

Latest Records

20
Latest records at Rosalia
DateStationRecordValueBeat old record byOld record stoodSignificance
22 August 2026Rosalia, USdaily high min (Provisional)17.2 C (63.0 F)1.6 C (2.9 F)84 years39 of 100 (Notable)
22 August 2026Rosalia, USdaily high max (Provisional)38.3 C (100.9 F)1.1 C (2.0 F)20 years18 of 100 (Routine)
13 May 2026Rosalia, USdaily high min14.4 C (57.9 F)1.1 C (2.0 F)101 years43 of 100 (Notable)
23 April 2026Rosalia, USdaily low max (Tie)7.8 C (46.0 F)tie65 years7 of 100 (Routine)
13 April 2026Rosalia, USdaily rain14.0 mm (0.6 in)0.8 mm (0.03 in)131 years20 of 100 (Routine)
20 March 2026Rosalia, USdaily high min (Tie)8.3 C (46.9 F)tie116 years10 of 100 (Routine)
19 March 2026Rosalia, USdaily high min8.3 C (46.9 F)1.1 C (2.0 F)28 years21 of 100 (Routine)
18 March 2026Rosalia, USdaily high min7.8 C (46.0 F)1.1 C (2.0 F)53 years29 of 100 (Routine)
13 March 2026Rosalia, USdaily snowfall9.1 cm (3.6 in)2.7 cm (1.1 in)128 years51 of 100 (Notable)
4 March 2026Rosalia, USdaily rain15.7 mm (0.6 in)4.5 mm (0.18 in)127 years20 of 100 (Routine)
24 February 2026Rosalia, USdaily rain12.7 mm (0.5 in)1.0 mm (0.04 in)122 years20 of 100 (Routine)
18 February 2026Rosalia, USdaily snowfall8.4 cm (3.3 in)1.8 cm (0.7 in)125 years45 of 100 (Notable)
15 January 2026Rosalia, USdaily high max (Tie)11.7 C (53.1 F)tie52 years6 of 100 (Routine)
14 January 2026Rosalia, USdaily high max11.7 C (53.1 F)1.1 C (2.0 F)114 years42 of 100 (Notable)
13 January 2026Rosalia, USdaily high max11.1 C (52.0 F)0.5 C (0.9 F)80 years34 of 100 (Routine)
4 January 2026Rosalia, USdaily high min3.9 C (39.0 F)0.6 C (1.1 F)132 years40 of 100 (Notable)
25 December 2025Rosalia, USdaily high max12.2 C (54.0 F)1.6 C (2.9 F)20 years19 of 100 (Routine)
16 December 2025Rosalia, USdaily high max12.8 C (55.0 F)1.1 C (2.0 F)84 years37 of 100 (Notable)
16 December 2025Rosalia, USdaily high min5.6 C (42.1 F)1.7 C (3.1 F)63 years31 of 100 (Routine)
15 December 2025Rosalia, USdaily high max (Tie)12.8 C (55.0 F)tie23 years4 of 100 (Routine)

Climate Trend

123 complete years, 1893 to 2025
Annual mean temperature at Rosalia as warming stripes, 1893 to 2025 One stripe for each of 123 complete years at Rosalia, 1893 to 2025. Blue stripes are years cooler than the station's own mean of 8.5 C (47.3 F); red stripes are warmer. The coolest year was 1916, at 6.2 C (43.1 F), and the warmest was 1934, at 11.1 C (52.0 F). The strongest colour marks a difference of 2.7 C (4.9 F). 1893: 6.6 C, -1.9 C from the station mean1894: 7.5 C, -1.0 C from the station mean1895: 7.5 C, -1.0 C from the station mean1896: 8.2 C, -0.3 C from the station mean1897: 7.9 C, -0.6 C from the station mean1898: 7.7 C, -0.8 C from the station mean1899: 7.4 C, -1.1 C from the station mean1900: 8.8 C, +0.3 C from the station mean1901: 8.4 C, -0.1 C from the station mean1902: 7.8 C, -0.7 C from the station mean1903: 7.9 C, -0.6 C from the station mean1904: 9.0 C, +0.5 C from the station mean1905: 8.4 C, -0.1 C from the station mean1907: 7.9 C, -0.6 C from the station mean1908: 8.6 C, +0.1 C from the station mean1909: 8.3 C, -0.2 C from the station mean1910: 9.0 C, +0.5 C from the station mean1911: 8.1 C, -0.4 C from the station mean1912: 8.0 C, -0.5 C from the station mean1913: 7.4 C, -1.1 C from the station mean1914: 9.0 C, +0.5 C from the station mean1915: 8.9 C, +0.4 C from the station mean1916: 6.2 C, -2.3 C from the station mean1917: 7.6 C, -0.9 C from the station mean1918: 9.2 C, +0.7 C from the station mean1919: 8.0 C, -0.5 C from the station mean1920: 8.6 C, +0.1 C from the station mean1921: 8.6 C, +0.1 C from the station mean1922: 7.8 C, -0.7 C from the station mean1923: 8.9 C, +0.4 C from the station mean1924: 8.9 C, +0.3 C from the station mean1925: 10.0 C, +1.5 C from the station mean1926: 9.7 C, +1.2 C from the station mean1927: 8.2 C, -0.3 C from the station mean1928: 9.1 C, +0.6 C from the station mean1929: 7.7 C, -0.8 C from the station mean1930: 8.5 C, 0.0 C from the station mean1931: 9.0 C, +0.5 C from the station mean1932: 8.5 C, 0.0 C from the station mean1933: 8.9 C, +0.4 C from the station mean1934: 11.1 C, +2.6 C from the station mean1935: 8.7 C, +0.1 C from the station mean1936: 8.8 C, +0.3 C from the station mean1937: 8.1 C, -0.4 C from the station mean1938: 9.5 C, +1.0 C from the station mean1939: 10.0 C, +1.5 C from the station mean1940: 10.3 C, +1.8 C from the station mean1941: 9.8 C, +1.3 C from the station mean1942: 8.6 C, +0.1 C from the station mean1943: 7.9 C, -0.6 C from the station mean1944: 8.9 C, +0.3 C from the station mean1945: 8.5 C, -0.1 C from the station mean1946: 7.9 C, -0.6 C from the station mean1951: 8.1 C, -0.5 C from the station mean1952: 8.6 C, +0.1 C from the station mean1953: 9.4 C, +0.9 C from the station mean1954: 8.0 C, -0.5 C from the station mean1955: 7.0 C, -1.5 C from the station mean1956: 8.1 C, -0.4 C from the station mean1957: 7.9 C, -0.6 C from the station mean1958: 10.2 C, +1.7 C from the station mean1959: 8.0 C, -0.5 C from the station mean1960: 8.2 C, -0.3 C from the station mean1961: 8.9 C, +0.4 C from the station mean1962: 8.3 C, -0.2 C from the station mean1963: 8.8 C, +0.3 C from the station mean1964: 7.6 C, -0.9 C from the station mean1965: 8.8 C, +0.3 C from the station mean1966: 9.0 C, +0.5 C from the station mean1967: 9.3 C, +0.8 C from the station mean1968: 8.5 C, 0.0 C from the station mean1969: 7.3 C, -1.2 C from the station mean1970: 7.9 C, -0.6 C from the station mean1971: 7.5 C, -1.0 C from the station mean1973: 8.6 C, +0.1 C from the station mean1974: 8.3 C, -0.2 C from the station mean1975: 7.1 C, -1.4 C from the station mean1976: 8.0 C, -0.5 C from the station mean1977: 8.0 C, -0.5 C from the station mean1978: 7.1 C, -1.4 C from the station mean1979: 7.4 C, -1.1 C from the station mean1980: 7.5 C, -1.0 C from the station mean1981: 8.7 C, +0.2 C from the station mean1982: 8.0 C, -0.5 C from the station mean1983: 8.6 C, +0.1 C from the station mean1984: 7.7 C, -0.8 C from the station mean1985: 6.2 C, -2.3 C from the station mean1986: 8.8 C, +0.3 C from the station mean1987: 9.5 C, +1.0 C from the station mean1988: 8.9 C, +0.4 C from the station mean1989: 8.4 C, -0.1 C from the station mean1991: 8.7 C, +0.2 C from the station mean1993: 7.7 C, -0.8 C from the station mean1994: 9.6 C, +1.1 C from the station mean1995: 9.1 C, +0.6 C from the station mean1996: 7.7 C, -0.8 C from the station mean1997: 8.9 C, +0.4 C from the station mean1998: 9.7 C, +1.1 C from the station mean1999: 8.4 C, -0.1 C from the station mean2001: 8.6 C, +0.1 C from the station mean2002: 8.2 C, -0.3 C from the station mean2003: 9.5 C, +1.0 C from the station mean2004: 9.4 C, +0.9 C from the station mean2005: 8.7 C, +0.2 C from the station mean2006: 9.2 C, +0.7 C from the station mean2007: 7.8 C, -0.7 C from the station mean2008: 7.5 C, -1.0 C from the station mean2009: 8.8 C, +0.3 C from the station mean2010: 8.6 C, +0.1 C from the station mean2011: 7.3 C, -1.2 C from the station mean2012: 9.0 C, +0.4 C from the station mean2013: 8.5 C, 0.0 C from the station mean2014: 9.1 C, +0.6 C from the station mean2015: 10.2 C, +1.7 C from the station mean2016: 9.6 C, +1.1 C from the station mean2017: 8.4 C, -0.1 C from the station mean2018: 9.4 C, +0.9 C from the station mean2019: 8.4 C, -0.1 C from the station mean2020: 9.4 C, +0.9 C from the station mean2021: 9.9 C, +1.4 C from the station mean2022: 8.7 C, +0.2 C from the station mean2024: 9.8 C, +1.3 C from the station mean2025: 10.2 C, +1.7 C from the station mean18931900191019201930194019501960197019801990200020102020
One stripe for each of 123 complete years at Rosalia, 1893 to 2025. Blue stripes are years cooler than the station's own mean of 8.5 C (47.3 F); red stripes are warmer. The coolest year was 1916, at 6.2 C (43.1 F), and the warmest was 1934, at 11.1 C (52.0 F). The strongest colour marks a difference of 2.7 C (4.9 F).
Annual mean temperature at Rosalia as warming stripes, 1893 to 2025
YearAnnual mean temperatureDifference from the station mean
18936.6 C-1.94 C
18947.5 C-0.96 C
18957.5 C-0.96 C
18968.2 C-0.31 C
18977.9 C-0.63 C
18987.7 C-0.83 C
18997.4 C-1.10 C
19008.8 C+0.30 C
19018.4 C-0.08 C
19027.8 C-0.67 C
19037.9 C-0.62 C
19049.0 C+0.52 C
19058.4 C-0.12 C
19077.9 C-0.64 C
19088.6 C+0.12 C
19098.3 C-0.24 C
19109.0 C+0.51 C
19118.1 C-0.41 C
19128.0 C-0.52 C
19137.4 C-1.06 C
19149.0 C+0.53 C
19158.9 C+0.42 C
19166.2 C-2.31 C
19177.6 C-0.88 C
19189.2 C+0.71 C
19198.0 C-0.46 C
19208.6 C+0.06 C
19218.6 C+0.13 C
19227.8 C-0.66 C
19238.9 C+0.38 C
19248.9 C+0.35 C
192510.0 C+1.53 C
19269.7 C+1.22 C
19278.2 C-0.26 C
19289.1 C+0.63 C
19297.7 C-0.77 C
19308.5 C0.00 C
19319.0 C+0.54 C
19328.5 C+0.04 C
19338.9 C+0.37 C
193411.1 C+2.62 C
19358.7 C+0.15 C
19368.8 C+0.32 C
19378.1 C-0.41 C
19389.5 C+0.96 C
193910.0 C+1.46 C
194010.3 C+1.76 C
19419.8 C+1.29 C
19428.6 C+0.07 C
19437.9 C-0.58 C
19448.9 C+0.35 C
19458.5 C-0.05 C
19467.9 C-0.63 C
19518.1 C-0.45 C
19528.6 C+0.09 C
19539.4 C+0.88 C
19548.0 C-0.47 C
19557.0 C-1.46 C
19568.1 C-0.44 C
19577.9 C-0.58 C
195810.2 C+1.70 C
19598.0 C-0.52 C
19608.2 C-0.32 C
19618.9 C+0.41 C
19628.3 C-0.16 C
19638.8 C+0.29 C
19647.6 C-0.92 C
19658.8 C+0.29 C
19669.0 C+0.53 C
19679.3 C+0.78 C
19688.5 C-0.02 C
19697.3 C-1.18 C
19707.9 C-0.61 C
19717.5 C-0.99 C
19738.6 C+0.06 C
19748.3 C-0.22 C
19757.1 C-1.38 C
19768.0 C-0.48 C
19778.0 C-0.50 C
19787.1 C-1.37 C
19797.4 C-1.06 C
19807.5 C-1.03 C
19818.7 C+0.20 C
19828.0 C-0.50 C
19838.6 C+0.11 C
19847.7 C-0.77 C
19856.2 C-2.26 C
19868.8 C+0.30 C
19879.5 C+0.96 C
19888.9 C+0.43 C
19898.4 C-0.13 C
19918.7 C+0.18 C
19937.7 C-0.79 C
19949.6 C+1.06 C
19959.1 C+0.59 C
19967.7 C-0.81 C
19978.9 C+0.38 C
19989.7 C+1.15 C
19998.4 C-0.08 C
20018.6 C+0.08 C
20028.2 C-0.26 C
20039.5 C+0.96 C
20049.4 C+0.91 C
20058.7 C+0.18 C
20069.2 C+0.73 C
20077.8 C-0.66 C
20087.5 C-0.99 C
20098.8 C+0.31 C
20108.6 C+0.11 C
20117.3 C-1.22 C
20129.0 C+0.45 C
20138.5 C+0.03 C
20149.1 C+0.63 C
201510.2 C+1.72 C
20169.6 C+1.12 C
20178.4 C-0.14 C
20189.4 C+0.92 C
20198.4 C-0.08 C
20209.4 C+0.89 C
20219.9 C+1.42 C
20228.7 C+0.24 C
20249.8 C+1.27 C
202510.2 C+1.66 C

The annual mean temperature here has risen by 0.05 C (0.01 to 0.09) per decade over 1893 to 2025. In Fahrenheit: 0.09 F (0.02 to 0.15) per decade. The slope is a straight line fitted to 123 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Rosalia
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.05 C (0.01 to 0.09) per decade0.09 F (0.02 to 0.15) per decade1893 to 2025123Rise
Mean daily maximum0.1 C (0.1 to 0.1) per decade0.2 F (0.1 to 0.2) per decade1893 to 2025123Rise
Mean daily minimum0.00 C (-0.04 to 0.05) per decade0.00 F (-0.08 to 0.08) per decade1893 to 2025123Not clearly different from zero

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1893 to 2026
Yearly extremes at Rosalia: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)43.9 C (111.0 F)202137.2 C (99.0 F)134
Coldest night (TNn)-33.9 C (-29.0 F)1968-20.8 C (-5.5 F)134
Wettest day (Rx1day)61.5 mm (2.4 in)190723.6 mm (0.9 in)134
Wettest five days (Rx5day)86.4 mm (3.4 in)193344.4 mm (1.7 in)134
Longest dry spell (CDD)87 days192836 days134

Hottest day (TXx)

Hottest day (TXx) at Rosalia by year The hottest day of the year at Rosalia, 1893 to 2026. The record is 43.9 C (111.0 F) in 2021, marked on the chart; the median year is 37.2 C (99.0 F). 303540451900192019401960198020002020Record: 43.9 C (111.0 F) in 2021
The hottest day of the year at Rosalia, 1893 to 2026. The record is 43.9 C (111.0 F) in 2021, marked on the chart; the median year is 37.2 C (99.0 F).
Hottest day (TXx) at Rosalia by year
YearHottest day (TXx)
189335.6 C (96.1 F)
189436.1 C (97.0 F)
189535.0 C (95.0 F)
189637.2 C (99.0 F)
189736.7 C (98.1 F)
189838.3 C (100.9 F)
189935.0 C (95.0 F)
190036.7 C (98.1 F)
190136.1 C (97.0 F)
190234.4 C (93.9 F)
190336.1 C (97.0 F)
190436.7 C (98.1 F)
190537.8 C (100.0 F)
190636.7 C (98.1 F)
190736.1 C (97.0 F)
190837.2 C (99.0 F)
190936.1 C (97.0 F)
191033.9 C (93.0 F)
191136.1 C (97.0 F)
191234.4 C (93.9 F)
191334.4 C (93.9 F)
191437.8 C (100.0 F)
191536.1 C (97.0 F)
191636.7 C (98.1 F)
191738.3 C (100.9 F)
191840.6 C (105.1 F)
191938.9 C (102.0 F)
192037.8 C (100.0 F)
192136.7 C (98.1 F)
192238.9 C (102.0 F)
192337.8 C (100.0 F)
192440.0 C (104.0 F)
192539.4 C (102.9 F)
192639.4 C (102.9 F)
192737.8 C (100.0 F)
192841.7 C (107.1 F)
192940.0 C (104.0 F)
193039.4 C (102.9 F)
193141.1 C (106.0 F)
193238.9 C (102.0 F)
193340.6 C (105.1 F)
193442.2 C (108.0 F)
193539.4 C (102.9 F)
193638.3 C (100.9 F)
193736.7 C (98.1 F)
193838.9 C (102.0 F)
193941.7 C (107.1 F)
194038.3 C (100.9 F)
194138.9 C (102.0 F)
194237.2 C (99.0 F)
194335.0 C (95.0 F)
194436.7 C (98.1 F)
194535.0 C (95.0 F)
194636.1 C (97.0 F)
194735.6 C (96.1 F)
194833.9 C (93.0 F)
194937.8 C (100.0 F)
195036.1 C (97.0 F)
195135.6 C (96.1 F)
195236.1 C (97.0 F)
195336.1 C (97.0 F)
195433.3 C (91.9 F)
195537.2 C (99.0 F)
195636.7 C (98.1 F)
195732.2 C (90.0 F)
195836.7 C (98.1 F)
195938.3 C (100.9 F)
196037.2 C (99.0 F)
196141.7 C (107.1 F)
196234.4 C (93.9 F)
196334.4 C (93.9 F)
196435.6 C (96.1 F)
196535.0 C (95.0 F)
196637.2 C (99.0 F)
196737.8 C (100.0 F)
196836.1 C (97.0 F)
196933.9 C (93.0 F)
197038.3 C (100.9 F)
197138.3 C (100.9 F)
197239.4 C (102.9 F)
197337.2 C (99.0 F)
197436.1 C (97.0 F)
197537.2 C (99.0 F)
197635.0 C (95.0 F)
197740.0 C (104.0 F)
197836.1 C (97.0 F)
197938.3 C (100.9 F)
198037.2 C (99.0 F)
198136.7 C (98.1 F)
198236.7 C (98.1 F)
198335.6 C (96.1 F)
198439.4 C (102.9 F)
198536.7 C (98.1 F)
198636.7 C (98.1 F)
198735.6 C (96.1 F)
198838.3 C (100.9 F)
198936.7 C (98.1 F)
199037.2 C (99.0 F)
199136.1 C (97.0 F)
199237.8 C (100.0 F)
199335.0 C (95.0 F)
199440.0 C (104.0 F)
199535.0 C (95.0 F)
199637.8 C (100.0 F)
199737.8 C (100.0 F)
199840.0 C (104.0 F)
199936.7 C (98.1 F)
200037.2 C (99.0 F)
200139.4 C (102.9 F)
200238.9 C (102.0 F)
200338.3 C (100.9 F)
200438.9 C (102.0 F)
200537.2 C (99.0 F)
200640.6 C (105.1 F)
200739.4 C (102.9 F)
200841.1 C (106.0 F)
200940.0 C (104.0 F)
201036.1 C (97.0 F)
201136.7 C (98.1 F)
201235.6 C (96.1 F)
201336.1 C (97.0 F)
201438.3 C (100.9 F)
201540.6 C (105.1 F)
201637.8 C (100.0 F)
201739.4 C (102.9 F)
201841.1 C (106.0 F)
201937.2 C (99.0 F)
202039.4 C (102.9 F)
202143.9 C (111.0 F)
202240.6 C (105.1 F)
202339.4 C (102.9 F)
202440.6 C (105.1 F)
202537.2 C (99.0 F)
202638.3 C (100.9 F)

Coldest night (TNn)

Coldest night (TNn) at Rosalia by year The coldest night of the year at Rosalia, 1893 to 2026. The record is -33.9 C (-29.0 F) in 1968, marked on the chart; the median year is -20.8 C (-5.5 F). -40-30-20-1001900192019401960198020002020Record: -33.9 C (-29.0 F) in 1968
The coldest night of the year at Rosalia, 1893 to 2026. The record is -33.9 C (-29.0 F) in 1968, marked on the chart; the median year is -20.8 C (-5.5 F).
Coldest night (TNn) at Rosalia by year
YearColdest night (TNn)
1893-28.9 C (-20.0 F)
1894-25.6 C (-14.1 F)
1895-15.6 C (3.9 F)
1896-21.1 C (-6.0 F)
1897-19.4 C (-2.9 F)
1898-22.8 C (-9.0 F)
1899-32.2 C (-26.0 F)
1900-23.3 C (-9.9 F)
1901-15.0 C (5.0 F)
1902-25.6 C (-14.1 F)
1903-18.3 C (-0.9 F)
1904-15.6 C (3.9 F)
1905-22.8 C (-9.0 F)
1906-14.4 C (6.1 F)
1907-21.7 C (-7.1 F)
1908-25.0 C (-13.0 F)
1909-30.0 C (-22.0 F)
1910-20.0 C (-4.0 F)
1911-16.1 C (3.0 F)
1912-21.7 C (-7.1 F)
1913-20.6 C (-5.1 F)
1914-21.1 C (-6.0 F)
1915-17.2 C (1.0 F)
1916-25.6 C (-14.1 F)
1917-21.7 C (-7.1 F)
1918-17.8 C (0.0 F)
1919-31.1 C (-24.0 F)
1920-15.0 C (5.0 F)
1921-19.4 C (-2.9 F)
1922-28.3 C (-18.9 F)
1923-24.4 C (-11.9 F)
1924-25.0 C (-13.0 F)
1925-16.7 C (1.9 F)
1926-18.3 C (-0.9 F)
1927-26.1 C (-15.0 F)
1928-15.0 C (5.0 F)
1929-30.6 C (-23.1 F)
1930-23.3 C (-9.9 F)
1931-18.3 C (-0.9 F)
1932-21.1 C (-6.0 F)
1933-28.3 C (-18.9 F)
1934-7.2 C (19.0 F)
1935-15.6 C (3.9 F)
1936-27.2 C (-17.0 F)
1937-28.9 C (-20.0 F)
1938-13.3 C (8.1 F)
1939-23.9 C (-11.0 F)
1940-12.8 C (9.0 F)
1941-14.4 C (6.1 F)
1942-23.3 C (-9.9 F)
1943-20.6 C (-5.1 F)
1944-17.8 C (0.0 F)
1945-17.8 C (0.0 F)
1946-14.4 C (6.1 F)
1947-26.7 C (-16.1 F)
1948-21.1 C (-6.0 F)
1949-29.4 C (-20.9 F)
1950-31.1 C (-24.0 F)
1951-23.9 C (-11.0 F)
1952-26.7 C (-16.1 F)
1953-6.1 C (21.0 F)
1954-26.1 C (-15.0 F)
1955-25.6 C (-14.1 F)
1956-26.7 C (-16.1 F)
1957-30.6 C (-23.1 F)
1958-12.2 C (10.0 F)
1959-19.4 C (-2.9 F)
1960-17.8 C (0.0 F)
1961-20.0 C (-4.0 F)
1962-20.6 C (-5.1 F)
1963-20.6 C (-5.1 F)
1964-26.1 C (-15.0 F)
1965-12.2 C (10.0 F)
1966-14.4 C (6.1 F)
1967-12.8 C (9.0 F)
1968-33.9 C (-29.0 F)
1969-29.4 C (-20.9 F)
1970-17.8 C (0.0 F)
1971-16.7 C (1.9 F)
1972-23.9 C (-11.0 F)
1973-17.2 C (1.0 F)
1974-25.6 C (-14.1 F)
1975-23.9 C (-11.0 F)
1976-13.3 C (8.1 F)
1977-18.9 C (-2.0 F)
1978-27.8 C (-18.0 F)
1979-31.1 C (-24.0 F)
1980-23.9 C (-11.0 F)
1981-20.0 C (-4.0 F)
1982-23.3 C (-9.9 F)
1983-26.1 C (-15.0 F)
1984-23.3 C (-9.9 F)
1985-27.2 C (-17.0 F)
1986-16.7 C (1.9 F)
1987-19.4 C (-2.9 F)
1988-20.6 C (-5.1 F)
1989-23.3 C (-9.9 F)
1990-24.4 C (-11.9 F)
1991-12.8 C (9.0 F)
1992-17.8 C (0.0 F)
1993-21.7 C (-7.1 F)
1994-17.2 C (1.0 F)
1995-13.3 C (8.1 F)
1996-31.7 C (-25.1 F)
1997-13.3 C (8.1 F)
1998-20.6 C (-5.1 F)
1999-12.2 C (10.0 F)
2000-16.7 C (1.9 F)
2001-15.6 C (3.9 F)
2002-16.7 C (1.9 F)
2003-20.0 C (-4.0 F)
2004-27.2 C (-17.0 F)
2005-20.6 C (-5.1 F)
2006-17.8 C (0.0 F)
2007-23.3 C (-9.9 F)
2008-26.1 C (-15.0 F)
2009-25.0 C (-13.0 F)
2010-23.9 C (-11.0 F)
2011-23.9 C (-11.0 F)
2012-11.1 C (12.0 F)
2013-18.3 C (-0.9 F)
2014-21.1 C (-6.0 F)
2015-20.6 C (-5.1 F)
2016-21.7 C (-7.1 F)
2017-22.8 C (-9.0 F)
2018-16.7 C (1.9 F)
2019-17.2 C (1.0 F)
2020-13.9 C (7.0 F)
2021-18.3 C (-0.9 F)
2022-22.2 C (-8.0 F)
2023-15.0 C (5.0 F)
2024-22.8 C (-9.0 F)
2025-24.4 C (-11.9 F)
2026-10.6 C (12.9 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Rosalia by year The wettest day of the year at Rosalia, 1893 to 2026. The record is 61.5 mm (2.4 in) in 1907, marked on the chart; the median year is 23.6 mm (0.9 in). 0204060801900192019401960198020002020Record: 61.5 mm (2.4 in) in 1907
The wettest day of the year at Rosalia, 1893 to 2026. The record is 61.5 mm (2.4 in) in 1907, marked on the chart; the median year is 23.6 mm (0.9 in).
Wettest day (Rx1day) at Rosalia by year
YearWettest day (Rx1day)
189321.8 mm (0.9 in)
189426.2 mm (1.0 in)
189525.4 mm (1.0 in)
189623.6 mm (0.9 in)
189744.7 mm (1.8 in)
189822.4 mm (0.9 in)
189933.3 mm (1.3 in)
190029.0 mm (1.1 in)
190141.7 mm (1.6 in)
190242.4 mm (1.7 in)
190319.8 mm (0.8 in)
190430.2 mm (1.2 in)
190530.7 mm (1.2 in)
190640.6 mm (1.6 in)
190761.5 mm (2.4 in)
190830.5 mm (1.2 in)
190927.2 mm (1.1 in)
191027.9 mm (1.1 in)
191114.7 mm (0.6 in)
191220.6 mm (0.8 in)
191320.3 mm (0.8 in)
191419.1 mm (0.8 in)
191532.5 mm (1.3 in)
191622.4 mm (0.9 in)
191719.8 mm (0.8 in)
191813.2 mm (0.5 in)
191933.0 mm (1.3 in)
192021.6 mm (0.9 in)
192151.6 mm (2.0 in)
192212.7 mm (0.5 in)
192345.7 mm (1.8 in)
192417.0 mm (0.7 in)
192537.1 mm (1.5 in)
192626.4 mm (1.0 in)
192734.0 mm (1.3 in)
192826.7 mm (1.1 in)
192928.4 mm (1.1 in)
193025.9 mm (1.0 in)
193119.6 mm (0.8 in)
193228.7 mm (1.1 in)
193346.5 mm (1.8 in)
193424.4 mm (1.0 in)
193514.2 mm (0.6 in)
193624.9 mm (1.0 in)
193726.7 mm (1.1 in)
193822.9 mm (0.9 in)
193918.8 mm (0.7 in)
194029.2 mm (1.1 in)
194121.3 mm (0.8 in)
194239.6 mm (1.6 in)
194319.6 mm (0.8 in)
194418.0 mm (0.7 in)
194527.2 mm (1.1 in)
194623.6 mm (0.9 in)
194723.1 mm (0.9 in)
194839.9 mm (1.6 in)
194921.6 mm (0.9 in)
195020.1 mm (0.8 in)
195126.7 mm (1.1 in)
195213.5 mm (0.5 in)
195336.6 mm (1.4 in)
195423.4 mm (0.9 in)
195527.9 mm (1.1 in)
195624.6 mm (1.0 in)
195721.3 mm (0.8 in)
195825.7 mm (1.0 in)
195927.7 mm (1.1 in)
196019.3 mm (0.8 in)
196118.5 mm (0.7 in)
196217.3 mm (0.7 in)
196329.2 mm (1.1 in)
196429.7 mm (1.2 in)
196527.4 mm (1.1 in)
196619.1 mm (0.8 in)
196724.6 mm (1.0 in)
196824.6 mm (1.0 in)
196922.9 mm (0.9 in)
197024.4 mm (1.0 in)
197123.6 mm (0.9 in)
197224.4 mm (1.0 in)
197315.7 mm (0.6 in)
197420.3 mm (0.8 in)
197516.5 mm (0.6 in)
197613.5 mm (0.5 in)
197719.1 mm (0.8 in)
197834.5 mm (1.4 in)
197923.6 mm (0.9 in)
198035.1 mm (1.4 in)
198120.8 mm (0.8 in)
198236.1 mm (1.4 in)
198333.8 mm (1.3 in)
198423.1 mm (0.9 in)
198521.8 mm (0.9 in)
198619.6 mm (0.8 in)
198717.8 mm (0.7 in)
198821.3 mm (0.8 in)
198936.8 mm (1.4 in)
199027.9 mm (1.1 in)
199114.7 mm (0.6 in)
199232.0 mm (1.3 in)
199325.1 mm (1.0 in)
199433.8 mm (1.3 in)
199516.3 mm (0.6 in)
199654.4 mm (2.1 in)
199719.6 mm (0.8 in)
199822.9 mm (0.9 in)
199919.1 mm (0.8 in)
200025.4 mm (1.0 in)
200119.1 mm (0.8 in)
200210.2 mm (0.4 in)
200315.2 mm (0.6 in)
200436.8 mm (1.4 in)
200520.3 mm (0.8 in)
200617.8 mm (0.7 in)
200720.3 mm (0.8 in)
200819.1 mm (0.8 in)
200914.0 mm (0.6 in)
201014.0 mm (0.6 in)
201115.2 mm (0.6 in)
201221.6 mm (0.9 in)
201325.4 mm (1.0 in)
201438.1 mm (1.5 in)
201522.9 mm (0.9 in)
201630.5 mm (1.2 in)
201729.7 mm (1.2 in)
201821.8 mm (0.9 in)
201920.3 mm (0.8 in)
202032.5 mm (1.3 in)
202117.3 mm (0.7 in)
202226.9 mm (1.1 in)
202326.9 mm (1.1 in)
202419.8 mm (0.8 in)
202519.8 mm (0.8 in)
202616.0 mm (0.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Rosalia by year The wettest five days of the year at Rosalia, 1893 to 2026. The record is 86.4 mm (3.4 in) in 1933, marked on the chart; the median year is 44.4 mm (1.7 in). 204060801001900192019401960198020002020Record: 86.4 mm (3.4 in) in 1933
The wettest five days of the year at Rosalia, 1893 to 2026. The record is 86.4 mm (3.4 in) in 1933, marked on the chart; the median year is 44.4 mm (1.7 in).
Wettest five days (Rx5day) at Rosalia by year
YearWettest five days (Rx5day)
189350.3 mm (2.0 in)
189450.3 mm (2.0 in)
189535.6 mm (1.4 in)
189676.2 mm (3.0 in)
189770.3 mm (2.8 in)
189849.5 mm (1.9 in)
189961.4 mm (2.4 in)
190036.4 mm (1.4 in)
190146.1 mm (1.8 in)
190271.0 mm (2.8 in)
190350.1 mm (2.0 in)
190444.7 mm (1.8 in)
190551.3 mm (2.0 in)
190650.8 mm (2.0 in)
190761.5 mm (2.4 in)
190857.9 mm (2.3 in)
190968.0 mm (2.7 in)
191052.7 mm (2.1 in)
191132.5 mm (1.3 in)
191251.6 mm (2.0 in)
191342.4 mm (1.7 in)
191428.2 mm (1.1 in)
191550.3 mm (2.0 in)
191650.6 mm (2.0 in)
191743.1 mm (1.7 in)
191826.3 mm (1.0 in)
191945.4 mm (1.8 in)
192041.4 mm (1.6 in)
192155.7 mm (2.2 in)
192226.7 mm (1.1 in)
192374.1 mm (2.9 in)
192441.6 mm (1.6 in)
192540.4 mm (1.6 in)
192654.6 mm (2.1 in)
192783.1 mm (3.3 in)
192839.1 mm (1.5 in)
192961.9 mm (2.4 in)
193043.2 mm (1.7 in)
193138.8 mm (1.5 in)
193251.4 mm (2.0 in)
193386.4 mm (3.4 in)
193444.0 mm (1.7 in)
193523.4 mm (0.9 in)
193649.0 mm (1.9 in)
193747.3 mm (1.9 in)
193831.1 mm (1.2 in)
193939.1 mm (1.5 in)
194053.1 mm (2.1 in)
194147.3 mm (1.9 in)
194249.0 mm (1.9 in)
194337.4 mm (1.5 in)
194426.7 mm (1.1 in)
194554.1 mm (2.1 in)
194653.6 mm (2.1 in)
194743.0 mm (1.7 in)
194880.0 mm (3.1 in)
194932.1 mm (1.3 in)
195035.8 mm (1.4 in)
195158.0 mm (2.3 in)
195223.6 mm (0.9 in)
195357.4 mm (2.3 in)
195431.6 mm (1.2 in)
195552.3 mm (2.1 in)
195632.7 mm (1.3 in)
195750.8 mm (2.0 in)
195842.7 mm (1.7 in)
195948.3 mm (1.9 in)
196036.3 mm (1.4 in)
196147.5 mm (1.9 in)
196239.9 mm (1.6 in)
196360.5 mm (2.4 in)
196454.9 mm (2.2 in)
196540.2 mm (1.6 in)
196649.4 mm (1.9 in)
196735.0 mm (1.4 in)
196845.2 mm (1.8 in)
196936.6 mm (1.4 in)
197050.5 mm (2.0 in)
197151.3 mm (2.0 in)
197243.0 mm (1.7 in)
197341.9 mm (1.6 in)
197446.2 mm (1.8 in)
197534.3 mm (1.4 in)
197623.4 mm (0.9 in)
197745.8 mm (1.8 in)
197853.4 mm (2.1 in)
197948.7 mm (1.9 in)
198056.2 mm (2.2 in)
198144.8 mm (1.8 in)
198244.9 mm (1.8 in)
198339.3 mm (1.5 in)
198438.1 mm (1.5 in)
198534.0 mm (1.3 in)
198629.7 mm (1.2 in)
198739.4 mm (1.6 in)
198837.1 mm (1.5 in)
198954.4 mm (2.1 in)
199047.4 mm (1.9 in)
199137.7 mm (1.5 in)
199243.4 mm (1.7 in)
199338.7 mm (1.5 in)
199450.0 mm (2.0 in)
199532.2 mm (1.3 in)
199656.4 mm (2.2 in)
199736.4 mm (1.4 in)
199838.6 mm (1.5 in)
199930.2 mm (1.2 in)
200033.8 mm (1.3 in)
200134.4 mm (1.4 in)
200228.5 mm (1.1 in)
200341.1 mm (1.6 in)
200443.1 mm (1.7 in)
200529.5 mm (1.2 in)
200648.3 mm (1.9 in)
200727.9 mm (1.1 in)
200832.5 mm (1.3 in)
200922.1 mm (0.9 in)
201024.9 mm (1.0 in)
201135.6 mm (1.4 in)
201258.1 mm (2.3 in)
201340.6 mm (1.6 in)
201446.7 mm (1.8 in)
201542.4 mm (1.7 in)
201655.4 mm (2.2 in)
201746.7 mm (1.8 in)
201843.4 mm (1.7 in)
201948.0 mm (1.9 in)
202056.2 mm (2.2 in)
202139.1 mm (1.5 in)
202255.8 mm (2.2 in)
202349.6 mm (2.0 in)
202435.8 mm (1.4 in)
202533.2 mm (1.3 in)
202636.1 mm (1.4 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Rosalia by year The longest dry spell of the year at Rosalia, 1893 to 2026. The record is 87 days in 1928, marked on the chart; the median year is 36 days. 0204060801001900192019401960198020002020Record: 87 days in 1928
The longest dry spell of the year at Rosalia, 1893 to 2026. The record is 87 days in 1928, marked on the chart; the median year is 36 days.
Longest dry spell (CDD) at Rosalia by year
YearLongest dry spell (CDD)
189348 days
189446 days
189561 days
189624 days
189743 days
189836 days
189917 days
190029 days
190133 days
190241 days
190326 days
190468 days
190531 days
190630 days
190716 days
190820 days
190928 days
191056 days
191128 days
191228 days
191323 days
191434 days
191535 days
191632 days
191774 days
191823 days
191936 days
192028 days
192143 days
192261 days
192335 days
192432 days
192525 days
192657 days
192754 days
192887 days
192941 days
193043 days
193168 days
193234 days
193323 days
193437 days
193526 days
193641 days
193724 days
193844 days
193959 days
194038 days
194122 days
194261 days
194338 days
194452 days
194540 days
194646 days
194730 days
194824 days
194926 days
195033 days
195152 days
195250 days
195334 days
195435 days
195547 days
195625 days
195741 days
195828 days
195936 days
196042 days
196124 days
196242 days
196331 days
196420 days
196533 days
196654 days
196775 days
196837 days
196974 days
197028 days
197123 days
197224 days
197365 days
197445 days
197533 days
197636 days
197735 days
197854 days
197940 days
198038 days
198152 days
198220 days
198319 days
198434 days
198546 days
198644 days
198778 days
198858 days
198928 days
199032 days
199154 days
199228 days
199338 days
199434 days
199525 days
199624 days
199754 days
199824 days
199926 days
200053 days
200158 days
200234 days
200339 days
200423 days
200542 days
200655 days
200738 days
200840 days
200924 days
201026 days
201137 days
201234 days
201321 days
201423 days
201538 days
201622 days
201744 days
201835 days
201919 days
202018 days
202146 days
202220 days
202319 days
202436 days
202562 days
202665 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

123 years with a frost

Across 123 years with a frost, the median last spring frost at Rosalia falls on 12 May and the median first autumn frost on 24 September, which leaves a median of 139 days between them.

In 1994 to 2025 the median growing season was 145 days. That is 22 days more than in 1893 to 1923.

Fitted over all years, the growing season changes by +0.9 days per decade at this station.

Frost dates and growing season at Rosalia
MeasureMedian, all yearsEarliest period (1893 to 1923)Recent period (1994 to 2025)Recent against earliestFitted trend
Last spring frost12 May25 May9 May16 days earlier-1.1 days per decade
First autumn frost24 September23 September25 September2 days later-0.1 days per decade
Growing days139 days123 days145 days22 days more+0.9 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

128 years, 1893 to 2025

A day with at least 23.7 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 55.8 mm (2.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Rosalia: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years23.7 mm (0.9 in)
5 years31.5 mm (1.2 in)
10 years36.9 mm (1.5 in)
25 years44.2 mm (1.7 in)
50 years49.9 mm (2.0 in)
100 years55.8 mm (2.2 in)

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 128 years of values from 1893 to 2025.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 61.5 mm (2.4 in) in 1907; 54.4 mm (2.1 in) in 1996; 51.6 mm (2.0 in) in 1921.

Station Changes

3 suspected

3 changes were suspected in the annual mean temperature of Rosalia, at 1943, 2007 and 2018. Each is measured against neighbouring stations.

  • Relative to 5 neighbouring stations, the station's annual mean temperature from 1943 ran 0.3 C (0.5 F) lower than in the years before (likely change).
  • Relative to 5 neighbouring stations, the station's annual mean temperature from 2007 ran 0.3 C (0.5 F) lower than in the years before (possible change).
  • Relative to 5 neighbouring stations, the station's annual mean temperature from 2018 ran 0.6 C (1.0 F) higher than in the years before (possible change).
Suspected changes in the annual mean temperature at Rosalia, against neighbouring stations
YearShift (C)Shift (F)StrengthNeighbours
1943-0.3-0.5likely5
2007-0.3-0.5possible5
2018+0.6+1.0possible5

Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.

Climate Twins

2010 to 2025 against 1961 to 1990

Over 2010 to 2025, Rosalia had a mean temperature of 9.1 C (48.4 F) and 484.3 mm (19.1 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are La Grande (United States, 220 km away), Ft Bidwell (United States, 636 km away) and Cedarville (United States, 672 km away).

Climate twins of Rosalia: stations whose 1961 to 1990 climate is closest to its 2010 to 2025 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
La GrandeUnited States220 km (137 mi)9.3 C (48.8 F)435.8 mm (17.2 in)0.63
Ft BidwellUnited States636 km (395 mi)8.9 C (47.9 F)436.5 mm (17.2 in)0.87
CedarvilleUnited States672 km (418 mi)9.1 C (48.5 F)321.8 mm (12.7 in)0.90

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

  • Data for Rosalia standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Rosalia threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-14).