Built 2026-10-16 (16 October 2026)

Roosevelt 1 S Weather Records (USC00027281)

Record envelope, standing records and threshold days for Roosevelt 1 S (USC00027281), Arizona, United States, with 122 years of record.

Key Facts for Roosevelt 1 S

  • Roosevelt 1 S (USC00027281) is a weather station in Arizona, United States at 33.65 latitude and -111.11 longitude, 794 m (2,605 ft) above sea level.
  • The station reports from 1905 to 2026, 122 years of record.
  • 1,464 records set at Roosevelt 1 S still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Roosevelt 1 S set a daily record high maximum temperature of 43.3 C (109.9 F) on 28 August 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Arizona, United States, 33.65 latitude, -111.11 longitude.
  • Elevation: 794 m (2,605 ft).
  • Period of record: 1905 to 2026, 122 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

12 days at or beyond a record
Daily record high and record low at Roosevelt 1 S, with 2026 drawn through them The band shows the record high and record low for each calendar day at Roosevelt 1 S. The lines show the 2026 daily maximum and minimum. 12 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Roosevelt 1 S. The lines show the 2026 daily maximum and minimum. 12 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Roosevelt 1 S, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan26.7 C (80.1 F)-7.2 C (19.0 F)23.3 C (73.9 F)1.1 C (34.0 F)
Feb30.6 C (87.1 F)-7.2 C (19.0 F)27.2 C (81.0 F)0.0 C (32.0 F)
Mar37.2 C (99.0 F)-5.0 C (23.0 F)37.2 C (99.0 F)5.0 C (41.0 F)
Apr37.8 C (100.0 F)-1.7 C (28.9 F)33.3 C (91.9 F)9.4 C (48.9 F)
May45.0 C (113.0 F)1.7 C (35.1 F)39.4 C (102.9 F)9.4 C (48.9 F)
Jun47.2 C (117.0 F)6.1 C (43.0 F)42.2 C (108.0 F)18.9 C (66.0 F)
Jul46.7 C (116.1 F)12.2 C (54.0 F)43.3 C (109.9 F)19.4 C (66.9 F)
Aug46.1 C (115.0 F)10.0 C (50.0 F)43.3 C (109.9 F)22.2 C (72.0 F)
Sep46.1 C (115.0 F)3.9 C (39.0 F)30.0 C (86.0 F)14.4 C (57.9 F)
Oct40.0 C (104.0 F)-3.3 C (26.1 F)n/an/a
Nov32.2 C (90.0 F)-4.4 C (24.1 F)n/an/a
Dec28.3 C (82.9 F)-7.8 C (18.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Roosevelt 1 S by the year they were set 1,464 records at Roosevelt 1 S still stand. 1906 holds the most, with 72. 0204060801905: 241906: 721907: 331908: 161909: 61910: 261911: 261912: 31913: 141914: 91915: 111916: 61917: 191918: 91919: 111920: 71921: 161922: 81923: 61924: 131925: 281926: 31927: 51928: 21929: 41930: 131931: 111932: 71933: 151934: 141935: 71936: 51937: 101938: 111939: 121940: 51941: 71942: 41943: 61944: 161945: 71946: 91947: 151948: 171949: 201950: 341951: 171952: 141953: 111954: 131955: 111956: 81957: 171958: 161959: 171960: 71961: 71962: 101963: 81964: 71965: 91966: 81967: 81968: 131969: 51970: 71971: 241972: 61973: 221974: 51975: 171976: 181977: 281978: 291979: 81980: 51981: 31982: 41983: 31984: 61985: 131986: 41987: 41988: 51989: 191990: 121991: 91992: 71993: 41994: 41995: 71996: 51997: 81998: 21999: 72000: 192001: 62002: 62003: 62004: 42005: 72006: 82007: 82008: 82009: 32010: 82011: 192012: 82013: 92014: 132015: 82016: 162017: 162019: 72020: 202021: 192022: 282023: 482024: 132025: 112026: 231905191819311944195719701983199620092023
1,464 records at Roosevelt 1 S still stand. 1906 holds the most, with 72.
Standing records at Roosevelt 1 S by the year they were set
Year setStanding records
190524
190672
190733
190816
19096
191026
191126
19123
191314
19149
191511
19166
191719
19189
191911
19207
192116
19228
19236
192413
192528
19263
19275
19282
19294
193013
193111
19327
193315
193414
19357
19365
193710
193811
193912
19405
19417
19424
19436
194416
19457
19469
194715
194817
194920
195034
195117
195214
195311
195413
195511
19568
195717
195816
195917
19607
19617
196210
19638
19647
19659
19668
19678
196813
19695
19707
197124
19726
197322
19745
197517
197618
197728
197829
19798
19805
19813
19824
19833
19846
198513
19864
19874
19885
198919
199012
19919
19927
19934
19944
19957
19965
19978
19982
19997
200019
20016
20026
20036
20044
20057
20068
20078
20088
20093
20108
201119
20128
20139
201413
20158
201616
201716
20197
202020
202119
202228
202348
202413
202511
202623

All-Time Record Progression

9 new records
When Roosevelt 1 S set new all-time records 9 all-time records were set at Roosevelt 1 S between 9 February 1939 and 13 September 2023. Each dot is a new record. Record daily snowfallRecord daily precipitationRecord high maximum temperatureRecord low maximum temperature9 February 1939: Record daily snowfall 8.9 cm (3.5 in)18 September 1946: Record daily precipitation 86.4 mm (3.4 in)16 July 1949: Record high maximum temperature 46.7 C (116.1 F)30 October 1959: Record daily precipitation 101.6 mm (4.0 in)22 December 1968: Record low maximum temperature -1.1 C (30.0 F)2 March 1978: Record daily precipitation 105.2 mm (4.1 in)26 June 1990: Record high maximum temperature 47.2 C (117.0 F)12 March 2006: Record daily snowfall 10.9 cm (4.3 in)13 September 2023: Record daily precipitation 120.1 mm (4.7 in)19501965198019952010
9 all-time records were set at Roosevelt 1 S between 9 February 1939 and 13 September 2023. Each dot is a new record.
When Roosevelt 1 S set new all-time records
DateKindDetail
1939-02-09Record daily snowfallRecord daily snowfall 8.9 cm (3.5 in)
1946-09-18Record daily precipitationRecord daily precipitation 86.4 mm (3.4 in)
1949-07-16Record high maximum temperatureRecord high maximum temperature 46.7 C (116.1 F)
1959-10-30Record daily precipitationRecord daily precipitation 101.6 mm (4.0 in)
1968-12-22Record low maximum temperatureRecord low maximum temperature -1.1 C (30.0 F)
1978-03-02Record daily precipitationRecord daily precipitation 105.2 mm (4.1 in)
1990-06-26Record high maximum temperatureRecord high maximum temperature 47.2 C (117.0 F)
2006-03-12Record daily snowfallRecord daily snowfall 10.9 cm (4.3 in)
2023-09-13Record daily precipitationRecord daily precipitation 120.1 mm (4.7 in)

Wettest Day of Each Month

Sep: 120.1 mm (4.7 in)
Record daily precipitation for each month at Roosevelt 1 S The wettest day on record for each calendar month at Roosevelt 1 S. The most was 120.1 mm (4.7 in) on 13 September 2023. 050100150 Jan: 79.0 mm (3.1 in), 22 January 2010 Jan Feb: 58.2 mm (2.3 in), 28 February 1997 Feb Mar: 105.2 mm (4.1 in), 2 March 1978 Mar Apr: 53.3 mm (2.1 in), 23 April 1931 Apr May: 35.1 mm (1.4 in), 23 May 2008 May Jun: 33.8 mm (1.3 in), 14 June 1955 Jun Jul: 67.3 mm (2.6 in), 30 July 2001 Jul Aug: 61.0 mm (2.4 in), 19 August 2021 Aug Sep: 120.1 mm (4.7 in), 13 September 2023 Sep Oct: 101.6 mm (4.0 in), 30 October 1959 Oct Nov: 71.1 mm (2.8 in), 22 November 1931 Nov Dec: 98.6 mm (3.9 in), 18 December 1978 Dec
The wettest day on record for each calendar month at Roosevelt 1 S. The most was 120.1 mm (4.7 in) on 13 September 2023.
Record daily precipitation for each month at Roosevelt 1 S
MonthRecord daily precipitation (mm)Date
Jan79.0 mm (3.1 in)22 January 2010
Feb58.2 mm (2.3 in)28 February 1997
Mar105.2 mm (4.1 in)2 March 1978
Apr53.3 mm (2.1 in)23 April 1931
May35.1 mm (1.4 in)23 May 2008
Jun33.8 mm (1.3 in)14 June 1955
Jul67.3 mm (2.6 in)30 July 2001
Aug61.0 mm (2.4 in)19 August 2021
Sep120.1 mm (4.7 in)13 September 2023
Oct101.6 mm (4.0 in)30 October 1959
Nov71.1 mm (2.8 in)22 November 1931
Dec98.6 mm (3.9 in)18 December 1978

Period of Record Coverage

1905 to 2026
Days with data per year at Roosevelt 1 S 121 years of record at Roosevelt 1 S, 1905 to 2026. 19 years have data for under 90 percent of days and are left out of rankings: 1905, 1906, 1907, 1910, 1914, 1918, 1919, 1920 and others. 1905: 163 of 365 days1906: 297 of 365 days1907: 320 of 365 days1908: 366 of 366 days1909: 365 of 365 days1910: 243 of 365 days1911: 365 of 365 days1912: 362 of 366 days1913: 332 of 365 days1914: 300 of 365 days1915: 357 of 365 days1916: 362 of 366 days1917: 363 of 365 days1918: 263 of 365 days1919: 279 of 365 days1920: 328 of 366 days1921: 337 of 365 days1922: 355 of 365 days1923: 355 of 365 days1924: 344 of 366 days1925: 318 of 365 days1926: 365 of 365 days1927: 365 of 365 days1928: 366 of 366 days1929: 365 of 365 days1930: 365 of 365 days1931: 365 of 365 days1932: 366 of 366 days1933: 358 of 365 days1934: 365 of 365 days1935: 365 of 365 days1936: 366 of 366 days1937: 361 of 365 days1938: 365 of 365 days1939: 365 of 365 days1940: 366 of 366 days1941: 364 of 365 days1942: 365 of 365 days1943: 365 of 365 days1944: 365 of 366 days1945: 364 of 365 days1946: 357 of 365 days1947: 364 of 365 days1948: 365 of 366 days1949: 363 of 365 days1950: 354 of 365 days1951: 364 of 365 days1952: 366 of 366 days1953: 346 of 365 days1954: 365 of 365 days1955: 365 of 365 days1956: 366 of 366 days1957: 365 of 365 days1958: 365 of 365 days1959: 365 of 365 days1960: 364 of 366 days1961: 365 of 365 days1962: 365 of 365 days1963: 365 of 365 days1964: 365 of 366 days1965: 365 of 365 days1966: 365 of 365 days1967: 362 of 365 days1968: 366 of 366 days1969: 365 of 365 days1970: 363 of 365 days1971: 365 of 365 days1972: 331 of 366 days1973: 327 of 365 days1974: 351 of 365 days1975: 318 of 365 days1976: 357 of 366 days1977: 349 of 365 days1978: 356 of 365 days1979: 360 of 365 days1980: 360 of 366 days1981: 364 of 365 days1982: 365 of 365 days1983: 362 of 365 days1984: 363 of 366 days1985: 364 of 365 days1986: 345 of 365 days1987: 365 of 365 days1988: 366 of 366 days1989: 365 of 365 days1990: 361 of 365 days1991: 364 of 365 days1992: 345 of 366 days1993: 313 of 365 days1994: 363 of 365 days1995: 305 of 365 days1996: 333 of 366 days1997: 363 of 365 days1998: 358 of 365 days1999: 363 of 365 days2000: 362 of 366 days2001: 358 of 365 days2002: 363 of 365 days2003: 361 of 365 days2004: 365 of 366 days2005: 363 of 365 days2006: 361 of 365 days2007: 352 of 365 days2008: 365 of 366 days2009: 362 of 365 days2010: 347 of 365 days2011: 341 of 365 days2012: 333 of 366 days2013: 312 of 365 days2014: 340 of 365 days2015: 336 of 365 days2016: 337 of 366 days2017: 275 of 365 days2019: 150 of 365 days2020: 336 of 366 days2021: 348 of 365 days2022: 343 of 365 days2023: 332 of 365 days2024: 323 of 366 days2025: 277 of 365 days2026: 219 of 365 days192019401960198020002020
121 years of record at Roosevelt 1 S, 1905 to 2026. 19 years have data for under 90 percent of days and are left out of rankings: 1905, 1906, 1907, 1910, 1914, 1918, 1919, 1920 and others.
Days with data per year at Roosevelt 1 S
YearDays with dataShare of yearComplete
190516345%No
190629781%No
190732088%No
1908366100%Yes
1909365100%Yes
191024367%No
1911365100%Yes
191236299%Yes
191333291%Yes
191430082%No
191535798%Yes
191636299%Yes
191736399%Yes
191826372%No
191927976%No
192032890%No
192133792%Yes
192235597%Yes
192335597%Yes
192434494%Yes
192531887%No
1926365100%Yes
1927365100%Yes
1928366100%Yes
1929365100%Yes
1930365100%Yes
1931365100%Yes
1932366100%Yes
193335898%Yes
1934365100%Yes
1935365100%Yes
1936366100%Yes
193736199%Yes
1938365100%Yes
1939365100%Yes
1940366100%Yes
1941364100%Yes
1942365100%Yes
1943365100%Yes
1944365100%Yes
1945364100%Yes
194635798%Yes
1947364100%Yes
1948365100%Yes
194936399%Yes
195035497%Yes
1951364100%Yes
1952366100%Yes
195334695%Yes
1954365100%Yes
1955365100%Yes
1956366100%Yes
1957365100%Yes
1958365100%Yes
1959365100%Yes
196036499%Yes
1961365100%Yes
1962365100%Yes
1963365100%Yes
1964365100%Yes
1965365100%Yes
1966365100%Yes
196736299%Yes
1968366100%Yes
1969365100%Yes
197036399%Yes
1971365100%Yes
197233190%Yes
197332790%No
197435196%Yes
197531887%No
197635798%Yes
197734996%Yes
197835698%Yes
197936099%Yes
198036098%Yes
1981364100%Yes
1982365100%Yes
198336299%Yes
198436399%Yes
1985364100%Yes
198634595%Yes
1987365100%Yes
1988366100%Yes
1989365100%Yes
199036199%Yes
1991364100%Yes
199234594%Yes
199331386%No
199436399%Yes
199530584%No
199633391%Yes
199736399%Yes
199835898%Yes
199936399%Yes
200036299%Yes
200135898%Yes
200236399%Yes
200336199%Yes
2004365100%Yes
200536399%Yes
200636199%Yes
200735296%Yes
2008365100%Yes
200936299%Yes
201034795%Yes
201134193%Yes
201233391%Yes
201331285%No
201434093%Yes
201533692%Yes
201633792%Yes
201727575%No
201915041%No
202033692%Yes
202134895%Yes
202234394%Yes
202333291%Yes
202432388%No
202527776%No
202621960%No

Latest Records

20
Latest records at Roosevelt 1 S
DateStationRecordValueBeat old record byOld record stoodSignificance
28 August 2026Roosevelt 1 S, USdaily high max (Provisional)43.3 C (109.9 F)1.1 C (2.0 F)101 years43 of 100 (Notable)
19 July 2026Roosevelt 1 S, USdaily low max31.1 C (88.0 F)1.1 C (2.0 F)32 years22 of 100 (Routine)
16 July 2026Roosevelt 1 S, USdaily rain29.0 mm (1.1 in)20.1 mm (0.8 in)44 years47 of 100 (Notable)
14 June 2026Roosevelt 1 S, USdaily high min27.8 C (82.0 F)2.2 C (4.0 F)92 years43 of 100 (Notable)
13 June 2026Roosevelt 1 S, USdaily high min (Tie)27.8 C (82.0 F)tie67 years7 of 100 (Routine)
26 May 2026Roosevelt 1 S, USdaily rain25.1 mm (1.0 in)20.0 mm (0.8 in)33 years50 of 100 (Notable)
13 May 2026Roosevelt 1 S, USdaily high min22.2 C (72.0 F)1.1 C (2.0 F)92 years40 of 100 (Notable)
13 May 2026Roosevelt 1 S, USdaily high max (Tie)39.4 C (102.9 F)tie92 years9 of 100 (Routine)
12 May 2026Roosevelt 1 S, USdaily high min22.8 C (73.0 F)1.7 C (3.1 F)92 years42 of 100 (Notable)
3 May 2026Roosevelt 1 S, USdaily high min (Tie)20.6 C (69.1 F)tie11 years3 of 100 (Routine)
20 April 2026Roosevelt 1 S, USdaily high min (Tie)17.2 C (63.0 F)tie36 years5 of 100 (Routine)
10 April 2026Roosevelt 1 S, USdaily high min (Tie)16.1 C (61.0 F)tie112 years10 of 100 (Routine)
6 April 2026Roosevelt 1 S, USdaily high min (Tie)18.3 C (64.9 F)tie76 years8 of 100 (Routine)
31 March 2026Roosevelt 1 S, USmonthly high min18.9 C (66.0 F)1.7 C (3.1 F)0 years25 of 100 (Routine)
28 March 2026Roosevelt 1 S, USdaily high max35.0 C (95.0 F)3.3 C (5.9 F)11 years19 of 100 (Routine)
27 March 2026Roosevelt 1 S, USdaily high min16.1 C (61.0 F)1.1 C (2.0 F)53 years29 of 100 (Routine)
27 March 2026Roosevelt 1 S, USdaily high max34.4 C (93.9 F)1.6 C (2.9 F)37 years24 of 100 (Routine)
26 March 2026Roosevelt 1 S, USdaily high max35.0 C (95.0 F)2.8 C (5.0 F)0 years15 of 100 (Routine)
26 March 2026Roosevelt 1 S, USdaily high min16.7 C (62.1 F)1.1 C (2.0 F)0 years13 of 100 (Routine)
25 March 2026Roosevelt 1 S, USdaily high max34.4 C (93.9 F)3.8 C (6.8 F)69 years37 of 100 (Notable)

Climate Trend

91 complete years, 1908 to 2023
Annual mean temperature at Roosevelt 1 S as warming stripes, 1908 to 2023 One stripe for each of 91 complete years at Roosevelt 1 S, 1908 to 2023. Blue stripes are years cooler than the station's own mean of 20.0 C (68.0 F); red stripes are warmer. The coolest year was 2023, at 17.5 C (63.5 F), and the warmest was 2016, at 21.7 C (71.1 F). The strongest colour marks a difference of 2.5 C (4.5 F). 1908: 18.6 C, -1.4 C from the station mean1909: 19.9 C, -0.1 C from the station mean1911: 20.0 C, +0.1 C from the station mean1915: 19.4 C, -0.6 C from the station mean1917: 20.1 C, +0.1 C from the station mean1920: 19.3 C, -0.7 C from the station mean1922: 19.6 C, -0.4 C from the station mean1923: 19.0 C, -1.0 C from the station mean1927: 19.9 C, -0.1 C from the station mean1928: 20.1 C, +0.1 C from the station mean1929: 19.1 C, -0.9 C from the station mean1930: 19.2 C, -0.7 C from the station mean1931: 19.5 C, -0.5 C from the station mean1932: 19.4 C, -0.6 C from the station mean1933: 19.5 C, -0.5 C from the station mean1934: 20.9 C, +0.9 C from the station mean1935: 19.3 C, -0.7 C from the station mean1936: 20.4 C, +0.4 C from the station mean1937: 20.1 C, +0.1 C from the station mean1938: 20.0 C, 0.0 C from the station mean1939: 19.0 C, -1.0 C from the station mean1940: 20.4 C, +0.4 C from the station mean1941: 19.7 C, -0.3 C from the station mean1942: 20.5 C, +0.5 C from the station mean1943: 21.2 C, +1.2 C from the station mean1944: 19.5 C, -0.5 C from the station mean1945: 19.6 C, -0.4 C from the station mean1946: 19.5 C, -0.4 C from the station mean1947: 19.6 C, -0.4 C from the station mean1948: 19.4 C, -0.6 C from the station mean1949: 20.0 C, 0.0 C from the station mean1951: 19.4 C, -0.6 C from the station mean1953: 20.5 C, +0.5 C from the station mean1954: 21.2 C, +1.2 C from the station mean1955: 19.7 C, -0.3 C from the station mean1956: 19.9 C, -0.1 C from the station mean1957: 19.7 C, -0.3 C from the station mean1958: 20.3 C, +0.3 C from the station mean1959: 20.6 C, +0.6 C from the station mean1960: 20.4 C, +0.4 C from the station mean1961: 20.5 C, +0.5 C from the station mean1962: 20.6 C, +0.6 C from the station mean1963: 20.2 C, +0.2 C from the station mean1964: 19.1 C, -0.9 C from the station mean1965: 19.6 C, -0.4 C from the station mean1966: 20.3 C, +0.4 C from the station mean1967: 19.9 C, -0.1 C from the station mean1968: 19.5 C, -0.4 C from the station mean1969: 20.2 C, +0.2 C from the station mean1970: 19.6 C, -0.4 C from the station mean1971: 19.3 C, -0.7 C from the station mean1974: 19.3 C, -0.7 C from the station mean1976: 18.5 C, -1.5 C from the station mean1977: 18.9 C, -1.1 C from the station mean1978: 19.8 C, -0.2 C from the station mean1979: 19.2 C, -0.8 C from the station mean1980: 20.2 C, +0.2 C from the station mean1981: 20.8 C, +0.9 C from the station mean1982: 19.6 C, -0.4 C from the station mean1983: 19.7 C, -0.3 C from the station mean1984: 20.0 C, 0.0 C from the station mean1985: 19.9 C, -0.1 C from the station mean1987: 20.0 C, 0.0 C from the station mean1988: 20.5 C, +0.5 C from the station mean1989: 21.1 C, +1.2 C from the station mean1990: 20.1 C, +0.1 C from the station mean1991: 20.0 C, 0.0 C from the station mean1992: 19.9 C, -0.1 C from the station mean1993: 20.1 C, +0.1 C from the station mean1994: 20.1 C, +0.2 C from the station mean1997: 20.6 C, +0.6 C from the station mean1998: 19.8 C, -0.2 C from the station mean1999: 20.2 C, +0.2 C from the station mean2000: 21.0 C, +1.0 C from the station mean2001: 20.7 C, +0.7 C from the station mean2002: 21.1 C, +1.1 C from the station mean2003: 21.3 C, +1.3 C from the station mean2004: 20.7 C, +0.7 C from the station mean2005: 21.2 C, +1.2 C from the station mean2006: 21.0 C, +1.0 C from the station mean2007: 20.9 C, +0.9 C from the station mean2008: 19.9 C, -0.1 C from the station mean2009: 20.1 C, +0.1 C from the station mean2010: 20.4 C, +0.4 C from the station mean2011: 21.0 C, +1.0 C from the station mean2014: 21.5 C, +1.5 C from the station mean2016: 21.7 C, +1.7 C from the station mean2020: 20.7 C, +0.7 C from the station mean2021: 19.4 C, -0.6 C from the station mean2022: 18.4 C, -1.6 C from the station mean2023: 17.5 C, -2.5 C from the station mean190819201930194019501960197019801990200020102020
One stripe for each of 91 complete years at Roosevelt 1 S, 1908 to 2023. Blue stripes are years cooler than the station's own mean of 20.0 C (68.0 F); red stripes are warmer. The coolest year was 2023, at 17.5 C (63.5 F), and the warmest was 2016, at 21.7 C (71.1 F). The strongest colour marks a difference of 2.5 C (4.5 F).
Annual mean temperature at Roosevelt 1 S as warming stripes, 1908 to 2023
YearAnnual mean temperatureDifference from the station mean
190818.6 C-1.38 C
190919.9 C-0.05 C
191120.0 C+0.06 C
191519.4 C-0.59 C
191720.1 C+0.09 C
192019.3 C-0.70 C
192219.6 C-0.39 C
192319.0 C-0.96 C
192719.9 C-0.11 C
192820.1 C+0.14 C
192919.1 C-0.86 C
193019.2 C-0.74 C
193119.5 C-0.50 C
193219.4 C-0.58 C
193319.5 C-0.47 C
193420.9 C+0.91 C
193519.3 C-0.73 C
193620.4 C+0.39 C
193720.1 C+0.11 C
193820.0 C-0.01 C
193919.0 C-0.98 C
194020.4 C+0.39 C
194119.7 C-0.26 C
194220.5 C+0.47 C
194321.2 C+1.17 C
194419.5 C-0.46 C
194519.6 C-0.40 C
194619.5 C-0.44 C
194719.6 C-0.41 C
194819.4 C-0.62 C
194920.0 C+0.04 C
195119.4 C-0.59 C
195320.5 C+0.49 C
195421.2 C+1.22 C
195519.7 C-0.32 C
195619.9 C-0.12 C
195719.7 C-0.31 C
195820.3 C+0.33 C
195920.6 C+0.65 C
196020.4 C+0.37 C
196120.5 C+0.51 C
196220.6 C+0.60 C
196320.2 C+0.20 C
196419.1 C-0.88 C
196519.6 C-0.35 C
196620.3 C+0.36 C
196719.9 C-0.05 C
196819.5 C-0.44 C
196920.2 C+0.17 C
197019.6 C-0.42 C
197119.3 C-0.65 C
197419.3 C-0.69 C
197618.5 C-1.51 C
197718.9 C-1.08 C
197819.8 C-0.20 C
197919.2 C-0.78 C
198020.2 C+0.22 C
198120.8 C+0.86 C
198219.6 C-0.43 C
198319.7 C-0.28 C
198420.0 C-0.01 C
198519.9 C-0.12 C
198720.0 C+0.01 C
198820.5 C+0.54 C
198921.1 C+1.16 C
199020.1 C+0.15 C
199120.0 C-0.01 C
199219.9 C-0.11 C
199320.1 C+0.10 C
199420.1 C+0.16 C
199720.6 C+0.63 C
199819.8 C-0.20 C
199920.2 C+0.20 C
200021.0 C+1.02 C
200120.7 C+0.68 C
200221.1 C+1.10 C
200321.3 C+1.29 C
200420.7 C+0.68 C
200521.2 C+1.23 C
200621.0 C+0.97 C
200720.9 C+0.89 C
200819.9 C-0.09 C
200920.1 C+0.15 C
201020.4 C+0.39 C
201121.0 C+1.05 C
201421.5 C+1.51 C
201621.7 C+1.73 C
202020.7 C+0.73 C
202119.4 C-0.61 C
202218.4 C-1.61 C
202317.5 C-2.46 C

The annual mean temperature here has risen by 0.07 C (0.02 to 0.12) per decade over 1908 to 2023. In Fahrenheit: 0.13 F (0.04 to 0.21) per decade. The slope is a straight line fitted to 91 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Roosevelt 1 S
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.07 C (0.02 to 0.12) per decade0.13 F (0.04 to 0.21) per decade1908 to 202391Rise
Mean daily maximum0.1 C (0.1 to 0.2) per decade0.2 F (0.1 to 0.3) per decade1908 to 202391Rise
Mean daily minimum0.04 C (-0.04 to 0.11) per decade0.1 F (-0.1 to 0.2) per decade1908 to 202391Not 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

1905 to 2026
Yearly extremes at Roosevelt 1 S: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)47.2 C (117.0 F)199044.4 C (111.9 F)121
Coldest night (TNn)-7.8 C (18.0 F)1908-2.2 C (28.0 F)121
Wettest day (Rx1day)120.1 mm (4.7 in)202340.6 mm (1.6 in)121
Wettest five days (Rx5day)179.5 mm (7.1 in)201066.0 mm (2.6 in)121
Longest dry spell (CDD)158 days197254 days121

Hottest day (TXx)

Hottest day (TXx) at Roosevelt 1 S by year The hottest day of the year at Roosevelt 1 S, 1905 to 2026. The record is 47.2 C (117.0 F) in 1990, marked on the chart; the median year is 44.4 C (111.9 F). 4042444648192019401960198020002020Record: 47.2 C (117.0 F) in 1990
The hottest day of the year at Roosevelt 1 S, 1905 to 2026. The record is 47.2 C (117.0 F) in 1990, marked on the chart; the median year is 44.4 C (111.9 F).
Hottest day (TXx) at Roosevelt 1 S by year
YearHottest day (TXx)
190545.6 C (114.1 F)
190645.6 C (114.1 F)
190745.6 C (114.1 F)
190845.0 C (113.0 F)
190944.4 C (111.9 F)
191045.0 C (113.0 F)
191142.8 C (109.0 F)
191242.2 C (108.0 F)
191346.1 C (115.0 F)
191443.9 C (111.0 F)
191542.2 C (108.0 F)
191642.8 C (109.0 F)
191742.8 C (109.0 F)
191840.6 C (105.1 F)
191940.6 C (105.1 F)
192042.2 C (108.0 F)
192143.3 C (109.9 F)
192243.3 C (109.9 F)
192343.3 C (109.9 F)
192445.0 C (113.0 F)
192545.0 C (113.0 F)
192643.9 C (111.0 F)
192743.9 C (111.0 F)
192843.3 C (109.9 F)
192946.1 C (115.0 F)
193043.9 C (111.0 F)
193144.4 C (111.9 F)
193242.2 C (108.0 F)
193343.9 C (111.0 F)
193444.4 C (111.9 F)
193542.2 C (108.0 F)
193645.0 C (113.0 F)
193745.0 C (113.0 F)
193844.4 C (111.9 F)
193944.4 C (111.9 F)
194043.9 C (111.0 F)
194143.3 C (109.9 F)
194243.3 C (109.9 F)
194343.3 C (109.9 F)
194443.3 C (109.9 F)
194543.3 C (109.9 F)
194642.8 C (109.0 F)
194743.9 C (111.0 F)
194844.4 C (111.9 F)
194946.7 C (116.1 F)
195046.1 C (115.0 F)
195146.1 C (115.0 F)
195242.2 C (108.0 F)
195344.4 C (111.9 F)
195443.3 C (109.9 F)
195544.4 C (111.9 F)
195644.4 C (111.9 F)
195743.9 C (111.0 F)
195845.6 C (114.1 F)
195943.3 C (109.9 F)
196045.0 C (113.0 F)
196143.3 C (109.9 F)
196243.3 C (109.9 F)
196343.3 C (109.9 F)
196445.0 C (113.0 F)
196543.3 C (109.9 F)
196644.4 C (111.9 F)
196743.3 C (109.9 F)
196845.0 C (113.0 F)
196944.4 C (111.9 F)
197045.0 C (113.0 F)
197144.4 C (111.9 F)
197243.9 C (111.0 F)
197345.6 C (114.1 F)
197445.6 C (114.1 F)
197541.1 C (106.0 F)
197643.3 C (109.9 F)
197746.1 C (115.0 F)
197843.9 C (111.0 F)
197943.9 C (111.0 F)
198043.9 C (111.0 F)
198143.3 C (109.9 F)
198242.2 C (108.0 F)
198343.3 C (109.9 F)
198442.8 C (109.0 F)
198543.3 C (109.9 F)
198643.3 C (109.9 F)
198741.7 C (107.1 F)
198844.4 C (111.9 F)
198944.4 C (111.9 F)
199047.2 C (117.0 F)
199142.8 C (109.0 F)
199242.8 C (109.0 F)
199344.4 C (111.9 F)
199446.1 C (115.0 F)
199546.7 C (116.1 F)
199643.9 C (111.0 F)
199745.0 C (113.0 F)
199845.6 C (114.1 F)
199942.2 C (108.0 F)
200045.0 C (113.0 F)
200145.6 C (114.1 F)
200244.4 C (111.9 F)
200346.1 C (115.0 F)
200444.4 C (111.9 F)
200545.0 C (113.0 F)
200646.7 C (116.1 F)
200744.4 C (111.9 F)
200843.9 C (111.0 F)
200944.4 C (111.9 F)
201043.3 C (109.9 F)
201143.3 C (109.9 F)
201245.0 C (113.0 F)
201345.0 C (113.0 F)
201443.9 C (111.0 F)
201544.4 C (111.9 F)
201647.2 C (117.0 F)
201746.7 C (116.1 F)
201943.9 C (111.0 F)
202045.6 C (114.1 F)
202145.6 C (114.1 F)
202243.9 C (111.0 F)
202345.0 C (113.0 F)
202445.0 C (113.0 F)
202545.6 C (114.1 F)
202643.3 C (109.9 F)

Coldest night (TNn)

Coldest night (TNn) at Roosevelt 1 S by year The coldest night of the year at Roosevelt 1 S, 1905 to 2026. The record is -7.8 C (18.0 F) in 1908, marked on the chart; the median year is -2.2 C (28.0 F). -10-7.5-5-2.502.5192019401960198020002020Record: -7.8 C (18.0 F) in 1908
The coldest night of the year at Roosevelt 1 S, 1905 to 2026. The record is -7.8 C (18.0 F) in 1908, marked on the chart; the median year is -2.2 C (28.0 F).
Coldest night (TNn) at Roosevelt 1 S by year
YearColdest night (TNn)
1905-5.0 C (23.0 F)
1906-5.0 C (23.0 F)
1907-6.1 C (21.0 F)
1908-7.8 C (18.0 F)
1909-2.8 C (27.0 F)
1910-4.4 C (24.1 F)
1911-3.3 C (26.1 F)
1912-2.8 C (27.0 F)
1913-6.7 C (19.9 F)
1914-0.6 C (30.9 F)
1915-1.7 C (28.9 F)
1916-1.1 C (30.0 F)
19170.6 C (33.1 F)
1918-2.2 C (28.0 F)
1919-3.3 C (26.1 F)
1920-0.6 C (30.9 F)
1921-0.6 C (30.9 F)
1922-1.7 C (28.9 F)
1923-1.1 C (30.0 F)
1924-2.8 C (27.0 F)
1925-2.2 C (28.0 F)
1926-2.8 C (27.0 F)
1927-1.1 C (30.0 F)
1928-3.3 C (26.1 F)
1929-3.9 C (25.0 F)
1930-5.0 C (23.0 F)
1931-3.3 C (26.1 F)
1932-5.0 C (23.0 F)
1933-5.0 C (23.0 F)
1934-3.3 C (26.1 F)
1935-3.9 C (25.0 F)
1936-1.1 C (30.0 F)
1937-5.6 C (21.9 F)
1938-3.3 C (26.1 F)
1939-4.4 C (24.1 F)
1940-2.2 C (28.0 F)
19410.6 C (33.1 F)
1942-0.6 C (30.9 F)
19430.0 C (32.0 F)
19440.0 C (32.0 F)
1945-1.1 C (30.0 F)
1946-2.2 C (28.0 F)
1947-3.3 C (26.1 F)
1948-5.6 C (21.9 F)
1949-6.1 C (21.0 F)
1950-3.3 C (26.1 F)
1951-3.9 C (25.0 F)
1952-3.9 C (25.0 F)
1953-1.1 C (30.0 F)
1954-2.2 C (28.0 F)
1955-1.7 C (28.9 F)
1956-3.9 C (25.0 F)
1957-1.7 C (28.9 F)
1958-2.2 C (28.0 F)
19590.0 C (32.0 F)
1960-3.3 C (26.1 F)
19611.1 C (34.0 F)
1962-6.1 C (21.0 F)
1963-7.2 C (19.0 F)
1964-3.3 C (26.1 F)
1965-1.7 C (28.9 F)
1966-1.1 C (30.0 F)
1967-2.8 C (27.0 F)
1968-3.9 C (25.0 F)
1969-1.1 C (30.0 F)
1970-1.7 C (28.9 F)
1971-6.1 C (21.0 F)
1972-1.7 C (28.9 F)
1973-0.6 C (30.9 F)
1974-6.1 C (21.0 F)
1975-3.9 C (25.0 F)
1976-4.4 C (24.1 F)
1977-3.9 C (25.0 F)
1978-4.4 C (24.1 F)
1979-4.4 C (24.1 F)
19801.7 C (35.1 F)
19811.1 C (34.0 F)
19820.6 C (33.1 F)
19831.1 C (34.0 F)
19841.1 C (34.0 F)
1985-2.2 C (28.0 F)
19860.6 C (33.1 F)
1987-3.3 C (26.1 F)
1988-1.7 C (28.9 F)
1989-1.7 C (28.9 F)
1990-4.4 C (24.1 F)
1991-2.2 C (28.0 F)
19920.6 C (33.1 F)
1993-1.7 C (28.9 F)
1994-0.6 C (30.9 F)
19950.6 C (33.1 F)
1996-2.8 C (27.0 F)
1997-1.1 C (30.0 F)
19980.0 C (32.0 F)
1999-1.1 C (30.0 F)
2000-1.1 C (30.0 F)
2001-1.1 C (30.0 F)
2002-2.2 C (28.0 F)
2003-2.2 C (28.0 F)
2004-1.1 C (30.0 F)
20050.6 C (33.1 F)
2006-4.4 C (24.1 F)
2007-3.3 C (26.1 F)
2008-2.8 C (27.0 F)
2009-2.2 C (28.0 F)
20100.0 C (32.0 F)
2011-5.0 C (23.0 F)
20121.1 C (34.0 F)
2013-2.2 C (28.0 F)
20140.0 C (32.0 F)
2015-1.1 C (30.0 F)
2016-0.6 C (30.9 F)
20171.1 C (34.0 F)
2019-5.6 C (21.9 F)
2020-3.9 C (25.0 F)
2021-2.8 C (27.0 F)
2022-5.6 C (21.9 F)
2023-7.2 C (19.0 F)
2024-3.9 C (25.0 F)
2025-2.8 C (27.0 F)
20260.0 C (32.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Roosevelt 1 S by year The wettest day of the year at Roosevelt 1 S, 1905 to 2026. The record is 120.1 mm (4.7 in) in 2023, marked on the chart; the median year is 40.6 mm (1.6 in). 050100150192019401960198020002020Record: 120.1 mm (4.7 in) in 2023
The wettest day of the year at Roosevelt 1 S, 1905 to 2026. The record is 120.1 mm (4.7 in) in 2023, marked on the chart; the median year is 40.6 mm (1.6 in).
Wettest day (Rx1day) at Roosevelt 1 S by year
YearWettest day (Rx1day)
190554.9 mm (2.2 in)
190632.0 mm (1.3 in)
190745.2 mm (1.8 in)
190840.4 mm (1.6 in)
190927.4 mm (1.1 in)
191030.5 mm (1.2 in)
191145.7 mm (1.8 in)
191254.6 mm (2.1 in)
191334.8 mm (1.4 in)
191456.6 mm (2.2 in)
191545.7 mm (1.8 in)
191648.8 mm (1.9 in)
191734.3 mm (1.4 in)
191833.0 mm (1.3 in)
191952.8 mm (2.1 in)
192049.5 mm (1.9 in)
192130.0 mm (1.2 in)
192240.9 mm (1.6 in)
192339.6 mm (1.6 in)
192421.1 mm (0.8 in)
192535.6 mm (1.4 in)
192629.0 mm (1.1 in)
192740.6 mm (1.6 in)
192827.9 mm (1.1 in)
192928.2 mm (1.1 in)
193036.3 mm (1.4 in)
193171.1 mm (2.8 in)
193238.9 mm (1.5 in)
193342.2 mm (1.7 in)
193447.0 mm (1.9 in)
193542.9 mm (1.7 in)
193632.0 mm (1.3 in)
193734.8 mm (1.4 in)
193847.8 mm (1.9 in)
193922.9 mm (0.9 in)
194059.4 mm (2.3 in)
194141.1 mm (1.6 in)
194234.8 mm (1.4 in)
194345.7 mm (1.8 in)
194450.0 mm (2.0 in)
194534.3 mm (1.4 in)
194686.4 mm (3.4 in)
194736.3 mm (1.4 in)
194855.6 mm (2.2 in)
194945.2 mm (1.8 in)
195034.3 mm (1.4 in)
195153.8 mm (2.1 in)
195235.6 mm (1.4 in)
195323.9 mm (0.9 in)
195466.5 mm (2.6 in)
195533.8 mm (1.3 in)
195619.3 mm (0.8 in)
195740.1 mm (1.6 in)
195855.9 mm (2.2 in)
1959101.6 mm (4.0 in)
196048.8 mm (1.9 in)
196128.7 mm (1.1 in)
196237.3 mm (1.5 in)
196356.6 mm (2.2 in)
196437.8 mm (1.5 in)
196566.0 mm (2.6 in)
196626.4 mm (1.0 in)
196753.3 mm (2.1 in)
196847.2 mm (1.9 in)
196926.2 mm (1.0 in)
197062.0 mm (2.4 in)
197148.3 mm (1.9 in)
197264.5 mm (2.5 in)
197329.5 mm (1.2 in)
197449.3 mm (1.9 in)
197522.6 mm (0.9 in)
197626.9 mm (1.1 in)
197733.3 mm (1.3 in)
1978105.2 mm (4.1 in)
197935.6 mm (1.4 in)
198040.1 mm (1.6 in)
198127.9 mm (1.1 in)
198240.1 mm (1.6 in)
198336.1 mm (1.4 in)
198450.0 mm (2.0 in)
198555.4 mm (2.2 in)
198638.4 mm (1.5 in)
198740.1 mm (1.6 in)
198831.0 mm (1.2 in)
198933.0 mm (1.3 in)
199033.5 mm (1.3 in)
199139.1 mm (1.5 in)
199243.2 mm (1.7 in)
199353.1 mm (2.1 in)
199443.2 mm (1.7 in)
199562.0 mm (2.4 in)
199651.8 mm (2.0 in)
199758.2 mm (2.3 in)
199834.5 mm (1.4 in)
199941.7 mm (1.6 in)
200033.5 mm (1.3 in)
200167.3 mm (2.6 in)
200217.0 mm (0.7 in)
200331.8 mm (1.3 in)
200447.2 mm (1.9 in)
200548.5 mm (1.9 in)
200673.4 mm (2.9 in)
200750.8 mm (2.0 in)
200854.9 mm (2.2 in)
200938.4 mm (1.5 in)
201079.0 mm (3.1 in)
201128.7 mm (1.1 in)
201245.0 mm (1.8 in)
201349.5 mm (1.9 in)
201450.0 mm (2.0 in)
201533.0 mm (1.3 in)
201630.5 mm (1.2 in)
201724.1 mm (0.9 in)
201971.9 mm (2.8 in)
202020.1 mm (0.8 in)
202161.0 mm (2.4 in)
202248.3 mm (1.9 in)
2023120.1 mm (4.7 in)
202447.5 mm (1.9 in)
202523.6 mm (0.9 in)
202639.4 mm (1.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Roosevelt 1 S by year The wettest five days of the year at Roosevelt 1 S, 1905 to 2026. The record is 179.5 mm (7.1 in) in 2010, marked on the chart; the median year is 66.0 mm (2.6 in). 050100150200192019401960198020002020Record: 179.5 mm (7.1 in) in 2010
The wettest five days of the year at Roosevelt 1 S, 1905 to 2026. The record is 179.5 mm (7.1 in) in 2010, marked on the chart; the median year is 66.0 mm (2.6 in).
Wettest five days (Rx5day) at Roosevelt 1 S by year
YearWettest five days (Rx5day)
190566.6 mm (2.6 in)
190693.8 mm (3.7 in)
190763.5 mm (2.5 in)
190871.9 mm (2.8 in)
190936.9 mm (1.5 in)
191050.8 mm (2.0 in)
1911104.7 mm (4.1 in)
191266.0 mm (2.6 in)
191375.2 mm (3.0 in)
1914108.7 mm (4.3 in)
191580.7 mm (3.2 in)
1916118.7 mm (4.7 in)
191763.7 mm (2.5 in)
191854.6 mm (2.1 in)
191980.0 mm (3.1 in)
192053.6 mm (2.1 in)
192169.8 mm (2.7 in)
192275.7 mm (3.0 in)
192345.5 mm (1.8 in)
192450.9 mm (2.0 in)
192536.7 mm (1.4 in)
192665.8 mm (2.6 in)
1927118.9 mm (4.7 in)
192845.2 mm (1.8 in)
192929.7 mm (1.2 in)
193065.5 mm (2.6 in)
1931128.7 mm (5.1 in)
1932109.8 mm (4.3 in)
193366.9 mm (2.6 in)
193457.9 mm (2.3 in)
193554.9 mm (2.2 in)
193663.8 mm (2.5 in)
193767.0 mm (2.6 in)
193877.1 mm (3.0 in)
193933.3 mm (1.3 in)
194087.1 mm (3.4 in)
1941105.9 mm (4.2 in)
194240.7 mm (1.6 in)
194357.7 mm (2.3 in)
194496.7 mm (3.8 in)
194559.2 mm (2.3 in)
1946169.7 mm (6.7 in)
194741.9 mm (1.6 in)
194874.6 mm (2.9 in)
194947.8 mm (1.9 in)
195035.0 mm (1.4 in)
1951100.1 mm (3.9 in)
195246.9 mm (1.8 in)
195358.0 mm (2.3 in)
1954108.2 mm (4.3 in)
195558.4 mm (2.3 in)
195635.3 mm (1.4 in)
1957114.5 mm (4.5 in)
195862.6 mm (2.5 in)
1959127.1 mm (5.0 in)
196057.1 mm (2.2 in)
196141.2 mm (1.6 in)
196261.4 mm (2.4 in)
196380.9 mm (3.2 in)
196446.4 mm (1.8 in)
196594.7 mm (3.7 in)
196641.9 mm (1.6 in)
1967122.5 mm (4.8 in)
196859.5 mm (2.3 in)
196935.6 mm (1.4 in)
197073.2 mm (2.9 in)
197172.9 mm (2.9 in)
1972117.2 mm (4.6 in)
197347.8 mm (1.9 in)
197459.5 mm (2.3 in)
197545.2 mm (1.8 in)
197639.6 mm (1.6 in)
197752.3 mm (2.1 in)
1978175.0 mm (6.9 in)
197985.8 mm (3.4 in)
1980108.2 mm (4.3 in)
198153.4 mm (2.1 in)
198254.0 mm (2.1 in)
198395.3 mm (3.8 in)
198461.2 mm (2.4 in)
198577.8 mm (3.1 in)
198653.1 mm (2.1 in)
198771.9 mm (2.8 in)
198861.3 mm (2.4 in)
198944.1 mm (1.7 in)
199052.8 mm (2.1 in)
199188.4 mm (3.5 in)
199276.1 mm (3.0 in)
1993154.2 mm (6.1 in)
199471.1 mm (2.8 in)
199590.7 mm (3.6 in)
199666.6 mm (2.6 in)
199777.0 mm (3.0 in)
199856.9 mm (2.2 in)
199973.6 mm (2.9 in)
200058.6 mm (2.3 in)
200184.8 mm (3.3 in)
200226.7 mm (1.1 in)
200376.7 mm (3.0 in)
200460.8 mm (2.4 in)
200593.3 mm (3.7 in)
200688.7 mm (3.5 in)
200788.9 mm (3.5 in)
200868.1 mm (2.7 in)
200939.1 mm (1.5 in)
2010179.5 mm (7.1 in)
201135.0 mm (1.4 in)
201277.8 mm (3.1 in)
2013100.3 mm (3.9 in)
201467.3 mm (2.6 in)
201535.0 mm (1.4 in)
201692.5 mm (3.6 in)
201742.1 mm (1.7 in)
2019106.2 mm (4.2 in)
202050.2 mm (2.0 in)
2021157.0 mm (6.2 in)
202252.1 mm (2.1 in)
2023126.2 mm (5.0 in)
202457.2 mm (2.3 in)
202543.7 mm (1.7 in)
202664.6 mm (2.5 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Roosevelt 1 S by year The longest dry spell of the year at Roosevelt 1 S, 1905 to 2026. The record is 158 days in 1972, marked on the chart; the median year is 54 days. 050100150200192019401960198020002020Record: 158 days in 1972
The longest dry spell of the year at Roosevelt 1 S, 1905 to 2026. The record is 158 days in 1972, marked on the chart; the median year is 54 days.
Longest dry spell (CDD) at Roosevelt 1 S by year
YearLongest dry spell (CDD)
190546 days
190699 days
190739 days
190866 days
1909110 days
191092 days
191190 days
191263 days
191360 days
191439 days
191543 days
191661 days
1917102 days
191846 days
191933 days
192054 days
192134 days
192247 days
192353 days
192475 days
192539 days
192634 days
192736 days
192866 days
192984 days
193041 days
193136 days
193248 days
193357 days
193453 days
193560 days
193650 days
193744 days
193895 days
193984 days
194030 days
194126 days
194275 days
1943102 days
194452 days
194583 days
194696 days
194763 days
1948118 days
194944 days
195053 days
195162 days
195247 days
195381 days
195477 days
195554 days
195669 days
195748 days
195844 days
1959111 days
196063 days
196194 days
196265 days
196384 days
196475 days
196535 days
196686 days
196745 days
196875 days
196970 days
197066 days
197189 days
1972158 days
197380 days
197494 days
197545 days
197653 days
197749 days
197852 days
197942 days
198055 days
198146 days
198241 days
198367 days
198482 days
198536 days
198658 days
198754 days
198856 days
198953 days
199034 days
199164 days
199237 days
199345 days
199451 days
199538 days
199691 days
199773 days
199853 days
199998 days
200083 days
200153 days
200276 days
200396 days
2004102 days
200573 days
200669 days
200765 days
200880 days
200953 days
201079 days
201144 days
201220 days
201340 days
201444 days
201535 days
201634 days
201739 days
201940 days
202038 days
202139 days
202241 days
202348 days
202434 days
202525 days
202639 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

62 years with a frost

Across 62 years with a frost, the median last spring frost at Roosevelt 1 S falls on 10 February and the median first autumn frost on 12 December, which leaves a median of 305 days between them.

In 1968 to 2023 the median growing season was 306 days. That is 5 days more than in 1908 to 1964.

Fitted over all years, the growing season changes by -1.5 days per decade at this station.

Frost dates and growing season at Roosevelt 1 S
MeasureMedian, all yearsEarliest period (1908 to 1964)Recent period (1968 to 2023)Recent against earliestFitted trend
Last spring frost10 February11 February10 February1 day earlier+1.8 days per decade
First autumn frost12 December10 December13 December3 days later+0.3 days per decade
Growing days305 days301 days306 days5 days more-1.5 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

110 years, 1906 to 2023

A day with at least 40.4 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 102.7 mm (4.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Roosevelt 1 S: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years40.4 mm (1.6 in)
5 years54.6 mm (2.1 in)
10 years64.9 mm (2.6 in)
25 years79.1 mm (3.1 in)
50 years90.5 mm (3.6 in)
100 years102.7 mm (4.0 in)

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 110 years of values from 1906 to 2023.

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: 120.1 mm (4.7 in) in 2023; 105.2 mm (4.1 in) in 1978; 101.6 mm (4.0 in) in 1959.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Climate Twins

2003 to 2023 against 1961 to 1990

Over 2003 to 2023, Roosevelt 1 S had a mean temperature of 20.4 C (68.7 F) and 393.9 mm (15.5 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Phantom Rch (United States, 288 km away), Maricopa 4 N (United States, 104 km away) and Valley of Fire Sp (United States, 438 km away).

Climate twins of Roosevelt 1 S: stations whose 1961 to 1990 climate is closest to its 2003 to 2023 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
Phantom RchUnited States288 km (179 mi)20.4 C (68.8 F)238.2 mm (9.4 in)0.92
Maricopa 4 NUnited States104 km (65 mi)20.7 C (69.2 F)196.3 mm (7.7 in)1.01
Valley of Fire SpUnited States438 km (272 mi)20.4 C (68.7 F)185.9 mm (7.3 in)1.22

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 Roosevelt 1 S standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Roosevelt 1 S 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).