Built 2026-10-15 (15 October 2026)

Waterdale Weather Records (USC00058839)

Record envelope, standing records and threshold days for Waterdale (USC00058839), Colorado, United States, with 125 years of record.

Key Facts for Waterdale

  • Waterdale (USC00058839) is a weather station in Colorado, United States at 40.43 latitude and -105.21 longitude, 1,594 m (5,230 ft) above sea level.
  • The station reports from 1902 to 2026, 125 years of record.
  • 1,464 records set at Waterdale still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Waterdale tied a daily record high minimum temperature of 13.3 C (55.9 F) on 11 October 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Colorado, United States, 40.43 latitude, -105.21 longitude.
  • Elevation: 1,594 m (5,230 ft).
  • Period of record: 1902 to 2026, 125 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

14 days at or beyond a record
Daily record high and record low at Waterdale, with 2026 drawn through them The band shows the record high and record low for each calendar day at Waterdale. The lines show the 2026 daily maximum and minimum. 14 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -60-40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Waterdale. The lines show the 2026 daily maximum and minimum. 14 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Waterdale, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan22.2 C (72.0 F)-40.6 C (-41.1 F)17.8 C (64.0 F)-22.8 C (-9.0 F)
Feb25.6 C (78.1 F)-36.7 C (-34.1 F)20.6 C (69.1 F)-15.0 C (5.0 F)
Mar31.1 C (88.0 F)-29.4 C (-20.9 F)31.1 C (88.0 F)-8.3 C (17.1 F)
Apr32.8 C (91.0 F)-21.1 C (-6.0 F)28.3 C (82.9 F)-5.0 C (23.0 F)
May35.6 C (96.1 F)-12.2 C (10.0 F)30.6 C (87.1 F)-2.8 C (27.0 F)
Jun38.9 C (102.0 F)-7.8 C (18.0 F)33.9 C (93.0 F)4.4 C (39.9 F)
Jul40.0 C (104.0 F)1.7 C (35.1 F)37.8 C (100.0 F)10.0 C (50.0 F)
Aug39.4 C (102.9 F)0.6 C (33.1 F)38.9 C (102.0 F)6.7 C (44.1 F)
Sep36.7 C (98.1 F)-8.3 C (17.1 F)34.4 C (93.9 F)6.7 C (44.1 F)
Oct32.8 C (91.0 F)-16.7 C (1.9 F)31.7 C (89.1 F)2.8 C (37.0 F)
Nov26.1 C (79.0 F)-27.8 C (-18.0 F)n/an/a
Dec23.3 C (73.9 F)-34.4 C (-29.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Waterdale by the year they were set 1,464 records at Waterdale still stand. 1936 holds the most, with 30. 01020301902: 61903: 171904: 81905: 101906: 261907: 101908: 121909: 41910: 141911: 101912: 91913: 111914: 61915: 81916: 201917: 71918: 101919: 51920: 11921: 91922: 71923: 51924: 111925: 91926: 161927: 161928: 121929: 151930: 181931: 111932: 201933: 251934: 191935: 101936: 301937: 241938: 71939: 141940: 91941: 71942: 131943: 161944: 81945: 131946: 91947: 171948: 141949: 51950: 131951: 151952: 121953: 151954: 161955: 151956: 131957: 61958: 91959: 241960: 101961: 41962: 141963: 141964: 101965: 161966: 51967: 71968: 41969: 121970: 121971: 151972: 151973: 131974: 71975: 151976: 81977: 101978: 101979: 131980: 61981: 81982: 81983: 131984: 81985: 141986: 61987: 91988: 91989: 231990: 161991: 121992: 131993: 61994: 61995: 191996: 121997: 91998: 51999: 42000: 122001: 52002: 72003: 162004: 112005: 112006: 242007: 122008: 152009: 122010: 82011: 102012: 82013: 132014: 192015: 132016: 122017: 162018: 132019: 72020: 122021: 112022: 82023: 72024: 102025: 132026: 181902191519281941195419671980199320062019
1,464 records at Waterdale still stand. 1936 holds the most, with 30.
Standing records at Waterdale by the year they were set
Year setStanding records
19026
190317
19048
190510
190626
190710
190812
19094
191014
191110
19129
191311
19146
19158
191620
19177
191810
19195
19201
19219
19227
19235
192411
19259
192616
192716
192812
192915
193018
193111
193220
193325
193419
193510
193630
193724
19387
193914
19409
19417
194213
194316
19448
194513
19469
194717
194814
19495
195013
195115
195212
195315
195416
195515
195613
19576
19589
195924
196010
19614
196214
196314
196410
196516
19665
19677
19684
196912
197012
197115
197215
197313
19747
197515
19768
197710
197810
197913
19806
19818
19828
198313
19848
198514
19866
19879
19889
198923
199016
199112
199213
19936
19946
199519
199612
19979
19985
19994
200012
20015
20027
200316
200411
200511
200624
200712
200815
200912
20108
201110
20128
201313
201419
201513
201612
201716
201813
20197
202012
202111
20228
20237
202410
202513
202618

All-Time Record Progression

5 new records
When Waterdale set new all-time records 5 all-time records were set at Waterdale between 13 July 1934 and 3 February 1989. Each dot is a new record. Record high maximum temperatureRecord high minimum temperatureRecord daily precipitationRecord low maximum temperature13 July 1934: Record high maximum temperature 40.0 C (104.0 F)25 June 1936: Record high minimum temperature 25.0 C (77.0 F)6 July 1936: Record high minimum temperature 26.1 C (79.0 F)2 September 1938: Record daily precipitation 135.9 mm (5.4 in)3 February 1989: Record low maximum temperature -23.9 C (-11.0 F)194019501960197019801990
5 all-time records were set at Waterdale between 13 July 1934 and 3 February 1989. Each dot is a new record.
When Waterdale set new all-time records
DateKindDetail
1934-07-13Record high maximum temperatureRecord high maximum temperature 40.0 C (104.0 F)
1936-06-25Record high minimum temperatureRecord high minimum temperature 25.0 C (77.0 F)
1936-07-06Record high minimum temperatureRecord high minimum temperature 26.1 C (79.0 F)
1938-09-02Record daily precipitationRecord daily precipitation 135.9 mm (5.4 in)
1989-02-03Record low maximum temperatureRecord low maximum temperature -23.9 C (-11.0 F)

Wettest Day of Each Month

Sep: 135.9 mm (5.4 in)
Record daily precipitation for each month at Waterdale The wettest day on record for each calendar month at Waterdale. The most was 135.9 mm (5.4 in) on 2 September 1938. 050100150 Jan: 23.6 mm (0.9 in), 8 January 1962 Jan Feb: 30.5 mm (1.2 in), 4 February 2024 Feb Mar: 62.5 mm (2.5 in), 23 March 1909 Mar Apr: 74.9 mm (2.9 in), 2 April 1957 Apr May: 89.9 mm (3.5 in), 3 May 1904 May Jun: 93.0 mm (3.7 in), 4 June 1949 Jun Jul: 82.6 mm (3.3 in), 19 July 1946 Jul Aug: 106.2 mm (4.2 in), 2 August 1951 Aug Sep: 135.9 mm (5.4 in), 2 September 1938 Sep Oct: 81.3 mm (3.2 in), 24 October 1923 Oct Nov: 41.4 mm (1.6 in), 26 November 2019 Nov Dec: 78.7 mm (3.1 in), 5 December 1913 Dec
The wettest day on record for each calendar month at Waterdale. The most was 135.9 mm (5.4 in) on 2 September 1938.
Record daily precipitation for each month at Waterdale
MonthRecord daily precipitation (mm)Date
Jan23.6 mm (0.9 in)8 January 1962
Feb30.5 mm (1.2 in)4 February 2024
Mar62.5 mm (2.5 in)23 March 1909
Apr74.9 mm (2.9 in)2 April 1957
May89.9 mm (3.5 in)3 May 1904
Jun93.0 mm (3.7 in)4 June 1949
Jul82.6 mm (3.3 in)19 July 1946
Aug106.2 mm (4.2 in)2 August 1951
Sep135.9 mm (5.4 in)2 September 1938
Oct81.3 mm (3.2 in)24 October 1923
Nov41.4 mm (1.6 in)26 November 2019
Dec78.7 mm (3.1 in)5 December 1913

Period of Record Coverage

1902 to 2026
Days with data per year at Waterdale 125 years of record at Waterdale, 1902 to 2026. 14 years have data for under 90 percent of days and are left out of rankings: 1902, 1911, 1915, 1918, 1919, 1920, 1921, 1922 and others. 1902: 116 of 365 days1903: 364 of 365 days1904: 364 of 366 days1905: 362 of 365 days1906: 365 of 365 days1907: 365 of 365 days1908: 365 of 366 days1909: 364 of 365 days1910: 365 of 365 days1911: 321 of 365 days1912: 354 of 366 days1913: 358 of 365 days1914: 362 of 365 days1915: 270 of 365 days1916: 335 of 366 days1917: 334 of 365 days1918: 275 of 365 days1919: 231 of 365 days1920: 244 of 366 days1921: 275 of 365 days1922: 275 of 365 days1923: 365 of 365 days1924: 366 of 366 days1925: 364 of 365 days1926: 363 of 365 days1927: 365 of 365 days1928: 365 of 366 days1929: 359 of 365 days1930: 364 of 365 days1931: 365 of 365 days1932: 365 of 366 days1933: 364 of 365 days1934: 333 of 365 days1935: 264 of 365 days1936: 344 of 366 days1937: 333 of 365 days1938: 359 of 365 days1939: 361 of 365 days1940: 364 of 366 days1941: 362 of 365 days1942: 363 of 365 days1943: 362 of 365 days1944: 365 of 366 days1945: 364 of 365 days1946: 365 of 365 days1947: 365 of 365 days1948: 366 of 366 days1949: 350 of 365 days1950: 363 of 365 days1951: 358 of 365 days1952: 365 of 366 days1953: 363 of 365 days1954: 363 of 365 days1955: 358 of 365 days1956: 364 of 366 days1957: 364 of 365 days1958: 363 of 365 days1959: 364 of 365 days1960: 365 of 366 days1961: 362 of 365 days1962: 360 of 365 days1963: 363 of 365 days1964: 342 of 366 days1965: 363 of 365 days1966: 363 of 365 days1967: 363 of 365 days1968: 364 of 366 days1969: 364 of 365 days1970: 364 of 365 days1971: 365 of 365 days1972: 364 of 366 days1973: 365 of 365 days1974: 364 of 365 days1975: 364 of 365 days1976: 364 of 366 days1977: 365 of 365 days1978: 362 of 365 days1979: 362 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 362 of 365 days1983: 320 of 365 days1984: 365 of 366 days1985: 357 of 365 days1986: 359 of 365 days1987: 360 of 365 days1988: 361 of 366 days1989: 359 of 365 days1990: 362 of 365 days1991: 362 of 365 days1992: 355 of 366 days1993: 352 of 365 days1994: 323 of 365 days1995: 353 of 365 days1996: 345 of 366 days1997: 357 of 365 days1998: 351 of 365 days1999: 290 of 365 days2000: 330 of 366 days2001: 360 of 365 days2002: 354 of 365 days2003: 358 of 365 days2004: 354 of 366 days2005: 358 of 365 days2006: 361 of 365 days2007: 358 of 365 days2008: 359 of 366 days2009: 332 of 365 days2010: 359 of 365 days2011: 260 of 365 days2012: 363 of 366 days2013: 361 of 365 days2014: 359 of 365 days2015: 364 of 365 days2016: 345 of 366 days2017: 342 of 365 days2018: 364 of 365 days2019: 331 of 365 days2020: 337 of 366 days2021: 356 of 365 days2022: 362 of 365 days2023: 364 of 365 days2024: 357 of 366 days2025: 365 of 365 days2026: 284 of 365 days192019401960198020002020
125 years of record at Waterdale, 1902 to 2026. 14 years have data for under 90 percent of days and are left out of rankings: 1902, 1911, 1915, 1918, 1919, 1920, 1921, 1922 and others.
Days with data per year at Waterdale
YearDays with dataShare of yearComplete
190211632%No
1903364100%Yes
190436499%Yes
190536299%Yes
1906365100%Yes
1907365100%Yes
1908365100%Yes
1909364100%Yes
1910365100%Yes
191132188%No
191235497%Yes
191335898%Yes
191436299%Yes
191527074%No
191633592%Yes
191733492%Yes
191827575%No
191923163%No
192024467%No
192127575%No
192227575%No
1923365100%Yes
1924366100%Yes
1925364100%Yes
192636399%Yes
1927365100%Yes
1928365100%Yes
192935998%Yes
1930364100%Yes
1931365100%Yes
1932365100%Yes
1933364100%Yes
193433391%Yes
193526472%No
193634494%Yes
193733391%Yes
193835998%Yes
193936199%Yes
194036499%Yes
194136299%Yes
194236399%Yes
194336299%Yes
1944365100%Yes
1945364100%Yes
1946365100%Yes
1947365100%Yes
1948366100%Yes
194935096%Yes
195036399%Yes
195135898%Yes
1952365100%Yes
195336399%Yes
195436399%Yes
195535898%Yes
195636499%Yes
1957364100%Yes
195836399%Yes
1959364100%Yes
1960365100%Yes
196136299%Yes
196236099%Yes
196336399%Yes
196434293%Yes
196536399%Yes
196636399%Yes
196736399%Yes
196836499%Yes
1969364100%Yes
1970364100%Yes
1971365100%Yes
197236499%Yes
1973365100%Yes
1974364100%Yes
1975364100%Yes
197636499%Yes
1977365100%Yes
197836299%Yes
197936299%Yes
1980366100%Yes
1981365100%Yes
198236299%Yes
198332088%No
1984365100%Yes
198535798%Yes
198635998%Yes
198736099%Yes
198836199%Yes
198935998%Yes
199036299%Yes
199136299%Yes
199235597%Yes
199335296%Yes
199432388%No
199535397%Yes
199634594%Yes
199735798%Yes
199835196%Yes
199929079%No
200033090%Yes
200136099%Yes
200235497%Yes
200335898%Yes
200435497%Yes
200535898%Yes
200636199%Yes
200735898%Yes
200835998%Yes
200933291%Yes
201035998%Yes
201126071%No
201236399%Yes
201336199%Yes
201435998%Yes
2015364100%Yes
201634594%Yes
201734294%Yes
2018364100%Yes
201933191%Yes
202033792%Yes
202135698%Yes
202236299%Yes
2023364100%Yes
202435798%Yes
2025365100%Yes
202628478%No

Latest Records

20
Latest records at Waterdale
DateStationRecordValueBeat old record byOld record stoodSignificance
11 October 2026Waterdale, USdaily high min (Tie, Provisional)13.3 C (55.9 F)tie9 years3 of 100 (Routine)
10 October 2026Waterdale, USdaily high min (Provisional)10.6 C (51.1 F)0.6 C (1.1 F)16 years15 of 100 (Routine)
7 October 2026Waterdale, USdaily high max (Tie, Provisional)30.0 C (86.0 F)tie69 years7 of 100 (Routine)
6 October 2026Waterdale, USdaily high min (Provisional)10.6 C (51.1 F)0.6 C (1.1 F)92 years38 of 100 (Notable)
6 October 2026Waterdale, USdaily high max (Provisional)31.7 C (89.1 F)1.7 C (3.1 F)1 year12 of 100 (Routine)
29 September 2026Waterdale, USdaily high min (Tie, Provisional)12.2 C (54.0 F)tie56 years6 of 100 (Routine)
14 September 2026Waterdale, USdaily high min (Provisional)16.1 C (61.0 F)1.7 C (3.1 F)71 years35 of 100 (Notable)
22 August 2026Waterdale, USdaily high max (Tie, Provisional)36.7 C (98.1 F)tie67 years7 of 100 (Routine)
11 August 2026Waterdale, USdaily high min20.0 C (68.0 F)2.8 C (5.0 F)13 years24 of 100 (Routine)
10 August 2026Waterdale, USdaily high max (Tie)36.1 C (97.0 F)tie91 years9 of 100 (Routine)
4 August 2026Waterdale, USdaily high max36.7 C (98.1 F)0.6 C (1.1 F)123 years41 of 100 (Notable)
3 August 2026Waterdale, USdaily high max38.9 C (102.0 F)2.2 C (4.0 F)124 years45 of 100 (Notable)
27 July 2026Waterdale, USdaily high min20.0 C (68.0 F)1.1 C (2.0 F)19 years19 of 100 (Routine)
21 July 2026Waterdale, USdaily high min21.1 C (70.0 F)3.3 C (5.9 F)92 years49 of 100 (Notable)
19 May 2026Waterdale, USdaily low max5.6 C (42.1 F)1.6 C (2.9 F)65 years31 of 100 (Routine)
18 May 2026Waterdale, USdaily snow depth2.5 cm (1.0 in)2.5 cm (1.0 in)76 years20 of 100 (Routine)
6 May 2026Waterdale, USdaily low max2.2 C (36.0 F)2.8 C (5.0 F)108 years44 of 100 (Notable)
30 March 2026Waterdale, USdaily high min8.9 C (48.0 F)1.7 C (3.1 F)80 years37 of 100 (Notable)
30 March 2026Waterdale, USdaily high max (Tie)25.6 C (78.1 F)tie60 years7 of 100 (Routine)
26 March 2026Waterdale, USdaily high min12.2 C (54.0 F)7.2 C (13.0 F)69 years43 of 100 (Notable)

Climate Trend

98 complete years, 1903 to 2025
Annual mean temperature at Waterdale as warming stripes, 1903 to 2025 One stripe for each of 98 complete years at Waterdale, 1903 to 2025. Blue stripes are years cooler than the station's own mean of 9.0 C (48.3 F); red stripes are warmer. The coolest year was 1929, at 6.8 C (44.2 F), and the warmest was 1933, at 10.7 C (51.3 F). The strongest colour marks a difference of 2.3 C (4.1 F). 1903: 8.0 C, -1.1 C from the station mean1904: 8.4 C, -0.7 C from the station mean1905: 7.7 C, -1.4 C from the station mean1906: 8.6 C, -0.4 C from the station mean1907: 9.0 C, 0.0 C from the station mean1909: 8.9 C, -0.2 C from the station mean1910: 10.6 C, +1.6 C from the station mean1912: 8.3 C, -0.7 C from the station mean1913: 8.9 C, -0.1 C from the station mean1914: 9.6 C, +0.5 C from the station mean1923: 8.5 C, -0.5 C from the station mean1924: 8.1 C, -0.9 C from the station mean1925: 9.5 C, +0.5 C from the station mean1926: 8.5 C, -0.5 C from the station mean1927: 8.2 C, -0.8 C from the station mean1928: 7.5 C, -1.5 C from the station mean1929: 6.8 C, -2.3 C from the station mean1930: 6.9 C, -2.1 C from the station mean1931: 8.6 C, -0.5 C from the station mean1932: 8.3 C, -0.7 C from the station mean1933: 10.7 C, +1.7 C from the station mean1939: 9.6 C, +0.6 C from the station mean1940: 9.6 C, +0.6 C from the station mean1941: 8.5 C, -0.6 C from the station mean1942: 8.4 C, -0.6 C from the station mean1943: 9.3 C, +0.3 C from the station mean1944: 8.5 C, -0.5 C from the station mean1945: 8.4 C, -0.6 C from the station mean1946: 9.2 C, +0.2 C from the station mean1947: 8.5 C, -0.6 C from the station mean1948: 8.7 C, -0.3 C from the station mean1949: 8.6 C, -0.4 C from the station mean1950: 9.1 C, 0.0 C from the station mean1951: 7.7 C, -1.3 C from the station mean1952: 8.9 C, -0.1 C from the station mean1953: 9.9 C, +0.9 C from the station mean1954: 10.7 C, +1.7 C from the station mean1955: 8.9 C, -0.1 C from the station mean1956: 9.7 C, +0.6 C from the station mean1957: 8.6 C, -0.5 C from the station mean1958: 9.1 C, +0.1 C from the station mean1959: 8.3 C, -0.8 C from the station mean1960: 8.8 C, -0.2 C from the station mean1961: 8.3 C, -0.7 C from the station mean1962: 9.1 C, 0.0 C from the station mean1963: 10.1 C, +1.0 C from the station mean1965: 9.3 C, +0.3 C from the station mean1966: 9.4 C, +0.4 C from the station mean1967: 9.4 C, +0.4 C from the station mean1968: 9.2 C, +0.1 C from the station mean1969: 9.5 C, +0.5 C from the station mean1970: 9.4 C, +0.3 C from the station mean1971: 8.9 C, -0.2 C from the station mean1972: 8.7 C, -0.3 C from the station mean1973: 8.6 C, -0.4 C from the station mean1974: 9.1 C, +0.1 C from the station mean1975: 8.5 C, -0.5 C from the station mean1976: 9.1 C, +0.1 C from the station mean1977: 9.8 C, +0.8 C from the station mean1978: 7.9 C, -1.1 C from the station mean1979: 7.9 C, -1.2 C from the station mean1980: 9.0 C, 0.0 C from the station mean1981: 10.3 C, +1.3 C from the station mean1982: 8.5 C, -0.5 C from the station mean1984: 8.2 C, -0.8 C from the station mean1985: 8.0 C, -1.0 C from the station mean1986: 9.7 C, +0.7 C from the station mean1987: 9.3 C, +0.2 C from the station mean1988: 9.1 C, 0.0 C from the station mean1989: 8.7 C, -0.4 C from the station mean1990: 9.0 C, 0.0 C from the station mean1991: 9.0 C, 0.0 C from the station mean1992: 9.6 C, +0.6 C from the station mean1993: 8.5 C, -0.6 C from the station mean1995: 9.3 C, +0.3 C from the station mean1996: 9.1 C, +0.1 C from the station mean1997: 8.9 C, -0.1 C from the station mean1998: 9.6 C, +0.5 C from the station mean2001: 9.6 C, +0.6 C from the station mean2002: 8.9 C, -0.1 C from the station mean2003: 9.9 C, +0.9 C from the station mean2004: 9.8 C, +0.8 C from the station mean2005: 10.3 C, +1.3 C from the station mean2006: 10.5 C, +1.4 C from the station mean2007: 10.1 C, +1.0 C from the station mean2008: 9.5 C, +0.5 C from the station mean2010: 10.0 C, +0.9 C from the station mean2012: 10.5 C, +1.4 C from the station mean2013: 8.4 C, -0.6 C from the station mean2014: 8.8 C, -0.2 C from the station mean2015: 9.9 C, +0.9 C from the station mean2017: 9.8 C, +0.7 C from the station mean2018: 9.3 C, +0.3 C from the station mean2021: 9.4 C, +0.3 C from the station mean2022: 8.8 C, -0.2 C from the station mean2023: 8.9 C, -0.2 C from the station mean2024: 10.2 C, +1.1 C from the station mean2025: 10.1 C, +1.1 C from the station mean1903191019201930194019501960197019801990200020102020
One stripe for each of 98 complete years at Waterdale, 1903 to 2025. Blue stripes are years cooler than the station's own mean of 9.0 C (48.3 F); red stripes are warmer. The coolest year was 1929, at 6.8 C (44.2 F), and the warmest was 1933, at 10.7 C (51.3 F). The strongest colour marks a difference of 2.3 C (4.1 F).
Annual mean temperature at Waterdale as warming stripes, 1903 to 2025
YearAnnual mean temperatureDifference from the station mean
19038.0 C-1.07 C
19048.4 C-0.65 C
19057.7 C-1.36 C
19068.6 C-0.41 C
19079.0 C-0.02 C
19098.9 C-0.18 C
191010.6 C+1.60 C
19128.3 C-0.73 C
19138.9 C-0.13 C
19149.6 C+0.53 C
19238.5 C-0.54 C
19248.1 C-0.92 C
19259.5 C+0.49 C
19268.5 C-0.53 C
19278.2 C-0.82 C
19287.5 C-1.54 C
19296.8 C-2.28 C
19306.9 C-2.09 C
19318.6 C-0.45 C
19328.3 C-0.73 C
193310.7 C+1.70 C
19399.6 C+0.58 C
19409.6 C+0.60 C
19418.5 C-0.56 C
19428.4 C-0.61 C
19439.3 C+0.28 C
19448.5 C-0.49 C
19458.4 C-0.61 C
19469.2 C+0.19 C
19478.5 C-0.58 C
19488.7 C-0.29 C
19498.6 C-0.44 C
19509.1 C+0.02 C
19517.7 C-1.32 C
19528.9 C-0.13 C
19539.9 C+0.86 C
195410.7 C+1.68 C
19558.9 C-0.09 C
19569.7 C+0.62 C
19578.6 C-0.45 C
19589.1 C+0.09 C
19598.3 C-0.77 C
19608.8 C-0.22 C
19618.3 C-0.70 C
19629.1 C+0.02 C
196310.1 C+1.05 C
19659.3 C+0.27 C
19669.4 C+0.37 C
19679.4 C+0.40 C
19689.2 C+0.13 C
19699.5 C+0.50 C
19709.4 C+0.35 C
19718.9 C-0.16 C
19728.7 C-0.29 C
19738.6 C-0.39 C
19749.1 C+0.10 C
19758.5 C-0.54 C
19769.1 C+0.10 C
19779.8 C+0.77 C
19787.9 C-1.13 C
19797.9 C-1.17 C
19809.0 C-0.02 C
198110.3 C+1.26 C
19828.5 C-0.49 C
19848.2 C-0.84 C
19858.0 C-1.04 C
19869.7 C+0.67 C
19879.3 C+0.22 C
19889.1 C+0.03 C
19898.7 C-0.38 C
19909.0 C0.00 C
19919.0 C+0.01 C
19929.6 C+0.58 C
19938.5 C-0.55 C
19959.3 C+0.30 C
19969.1 C+0.07 C
19978.9 C-0.13 C
19989.6 C+0.54 C
20019.6 C+0.57 C
20028.9 C-0.11 C
20039.9 C+0.87 C
20049.8 C+0.77 C
200510.3 C+1.30 C
200610.5 C+1.45 C
200710.1 C+1.05 C
20089.5 C+0.51 C
201010.0 C+0.93 C
201210.5 C+1.42 C
20138.4 C-0.63 C
20148.8 C-0.19 C
20159.9 C+0.87 C
20179.8 C+0.73 C
20189.3 C+0.26 C
20219.4 C+0.35 C
20228.8 C-0.22 C
20238.9 C-0.17 C
202410.2 C+1.12 C
202510.1 C+1.09 C

The annual mean temperature here has risen by 0.09 C (0.05 to 0.13) per decade over 1903 to 2025. In Fahrenheit: 0.2 F (0.1 to 0.2) per decade. The slope is a straight line fitted to 98 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Waterdale
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.09 C (0.05 to 0.13) per decade0.2 F (0.1 to 0.2) per decade1903 to 202598Rise
Mean daily maximum0.03 C (-0.02 to 0.09) per decade0.05 F (-0.05 to 0.15) per decade1903 to 202598Not clearly different from zero
Mean daily minimum0.2 C (0.1 to 0.2) per decade0.3 F (0.2 to 0.4) per decade1903 to 202598Rise

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

1902 to 2026
Yearly extremes at Waterdale: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)40.0 C (104.0 F)193436.7 C (98.1 F)125
Coldest night (TNn)-40.6 C (-41.1 F)1930-25.6 C (-14.1 F)125
Wettest day (Rx1day)135.9 mm (5.4 in)193841.7 mm (1.6 in)125
Wettest five days (Rx5day)234.4 mm (9.2 in)193859.3 mm (2.3 in)125
Longest dry spell (CDD)62 days195933 days125

Hottest day (TXx)

Hottest day (TXx) at Waterdale by year The hottest day of the year at Waterdale, 1902 to 2026. The record is 40.0 C (104.0 F) in 1934, marked on the chart; the median year is 36.7 C (98.1 F). 3234363840192019401960198020002020Record: 40.0 C (104.0 F) in 1934
The hottest day of the year at Waterdale, 1902 to 2026. The record is 40.0 C (104.0 F) in 1934, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at Waterdale by year
YearHottest day (TXx)
190237.8 C (100.0 F)
190336.1 C (97.0 F)
190433.3 C (91.9 F)
190536.7 C (98.1 F)
190633.3 C (91.9 F)
190733.9 C (93.0 F)
190834.4 C (93.9 F)
190935.0 C (95.0 F)
191038.9 C (102.0 F)
191137.8 C (100.0 F)
191235.6 C (96.1 F)
191338.3 C (100.9 F)
191434.4 C (93.9 F)
191536.1 C (97.0 F)
191636.1 C (97.0 F)
191734.4 C (93.9 F)
191836.1 C (97.0 F)
191937.2 C (99.0 F)
192034.4 C (93.9 F)
192136.1 C (97.0 F)
192235.6 C (96.1 F)
192332.8 C (91.0 F)
192436.1 C (97.0 F)
192538.9 C (102.0 F)
192635.0 C (95.0 F)
192735.0 C (95.0 F)
192833.3 C (91.9 F)
192937.2 C (99.0 F)
193036.7 C (98.1 F)
193136.7 C (98.1 F)
193236.7 C (98.1 F)
193336.7 C (98.1 F)
193440.0 C (104.0 F)
193536.7 C (98.1 F)
193638.3 C (100.9 F)
193737.8 C (100.0 F)
193838.3 C (100.9 F)
193938.3 C (100.9 F)
194039.4 C (102.9 F)
194135.6 C (96.1 F)
194236.7 C (98.1 F)
194336.1 C (97.0 F)
194436.7 C (98.1 F)
194535.6 C (96.1 F)
194637.8 C (100.0 F)
194737.2 C (99.0 F)
194836.7 C (98.1 F)
194935.0 C (95.0 F)
195033.9 C (93.0 F)
195137.8 C (100.0 F)
195236.7 C (98.1 F)
195337.8 C (100.0 F)
195438.9 C (102.0 F)
195537.8 C (100.0 F)
195637.8 C (100.0 F)
195737.2 C (99.0 F)
195836.1 C (97.0 F)
195937.2 C (99.0 F)
196036.7 C (98.1 F)
196134.4 C (93.9 F)
196236.7 C (98.1 F)
196336.7 C (98.1 F)
196437.2 C (99.0 F)
196535.0 C (95.0 F)
196636.1 C (97.0 F)
196735.0 C (95.0 F)
196836.7 C (98.1 F)
196937.2 C (99.0 F)
197034.4 C (93.9 F)
197136.7 C (98.1 F)
197236.1 C (97.0 F)
197338.9 C (102.0 F)
197435.6 C (96.1 F)
197536.1 C (97.0 F)
197637.8 C (100.0 F)
197736.1 C (97.0 F)
197837.2 C (99.0 F)
197936.1 C (97.0 F)
198036.1 C (97.0 F)
198137.8 C (100.0 F)
198237.8 C (100.0 F)
198335.6 C (96.1 F)
198434.4 C (93.9 F)
198536.7 C (98.1 F)
198636.7 C (98.1 F)
198735.6 C (96.1 F)
198837.2 C (99.0 F)
198938.3 C (100.9 F)
199038.3 C (100.9 F)
199136.1 C (97.0 F)
199238.3 C (100.9 F)
199335.0 C (95.0 F)
199438.9 C (102.0 F)
199538.3 C (100.9 F)
199637.2 C (99.0 F)
199735.6 C (96.1 F)
199837.8 C (100.0 F)
199933.9 C (93.0 F)
200036.7 C (98.1 F)
200137.8 C (100.0 F)
200238.3 C (100.9 F)
200338.3 C (100.9 F)
200436.7 C (98.1 F)
200539.4 C (102.9 F)
200638.9 C (102.0 F)
200737.2 C (99.0 F)
200839.4 C (102.9 F)
200936.1 C (97.0 F)
201037.2 C (99.0 F)
201137.2 C (99.0 F)
201237.8 C (100.0 F)
201335.6 C (96.1 F)
201437.2 C (99.0 F)
201535.6 C (96.1 F)
201636.7 C (98.1 F)
201736.1 C (97.0 F)
201838.3 C (100.9 F)
201936.7 C (98.1 F)
202037.2 C (99.0 F)
202136.1 C (97.0 F)
202237.8 C (100.0 F)
202336.1 C (97.0 F)
202437.8 C (100.0 F)
202537.2 C (99.0 F)
202638.9 C (102.0 F)

Coldest night (TNn)

Coldest night (TNn) at Waterdale by year The coldest night of the year at Waterdale, 1902 to 2026. The record is -40.6 C (-41.1 F) in 1930, marked on the chart; the median year is -25.6 C (-14.1 F). -50-40-30-20-10192019401960198020002020Record: -40.6 C (-41.1 F) in 1930
The coldest night of the year at Waterdale, 1902 to 2026. The record is -40.6 C (-41.1 F) in 1930, marked on the chart; the median year is -25.6 C (-14.1 F).
Coldest night (TNn) at Waterdale by year
YearColdest night (TNn)
1902-18.9 C (-2.0 F)
1903-31.7 C (-25.1 F)
1904-20.6 C (-5.1 F)
1905-31.7 C (-25.1 F)
1906-26.1 C (-15.0 F)
1907-19.4 C (-2.9 F)
1908-22.8 C (-9.0 F)
1909-23.3 C (-9.9 F)
1910-26.1 C (-15.0 F)
1911-26.1 C (-15.0 F)
1912-25.0 C (-13.0 F)
1913-34.4 C (-29.9 F)
1914-24.4 C (-11.9 F)
1915-26.7 C (-16.1 F)
1916-27.8 C (-18.0 F)
1917-27.2 C (-17.0 F)
1918-23.3 C (-9.9 F)
1919-34.4 C (-29.9 F)
1920-17.8 C (0.0 F)
1921-24.4 C (-11.9 F)
1922-17.8 C (0.0 F)
1923-25.6 C (-14.1 F)
1924-33.9 C (-29.0 F)
1925-23.9 C (-11.0 F)
1926-31.7 C (-25.1 F)
1927-31.7 C (-25.1 F)
1928-31.7 C (-25.1 F)
1929-30.0 C (-22.0 F)
1930-40.6 C (-41.1 F)
1931-21.7 C (-7.1 F)
1932-31.7 C (-25.1 F)
1933-30.0 C (-22.0 F)
1934-19.4 C (-2.9 F)
1935-28.9 C (-20.0 F)
1936-36.7 C (-34.1 F)
1937-28.9 C (-20.0 F)
1938-22.8 C (-9.0 F)
1939-23.3 C (-9.9 F)
1940-28.9 C (-20.0 F)
1941-22.8 C (-9.0 F)
1942-33.3 C (-27.9 F)
1943-28.9 C (-20.0 F)
1944-21.1 C (-6.0 F)
1945-25.6 C (-14.1 F)
1946-21.1 C (-6.0 F)
1947-24.4 C (-11.9 F)
1948-29.4 C (-20.9 F)
1949-30.0 C (-22.0 F)
1950-26.7 C (-16.1 F)
1951-33.3 C (-27.9 F)
1952-22.2 C (-8.0 F)
1953-20.6 C (-5.1 F)
1954-26.1 C (-15.0 F)
1955-23.3 C (-9.9 F)
1956-26.1 C (-15.0 F)
1957-25.6 C (-14.1 F)
1958-23.9 C (-11.0 F)
1959-32.2 C (-26.0 F)
1960-28.9 C (-20.0 F)
1961-27.8 C (-18.0 F)
1962-32.8 C (-27.0 F)
1963-35.0 C (-31.0 F)
1964-26.7 C (-16.1 F)
1965-25.0 C (-13.0 F)
1966-27.8 C (-18.0 F)
1967-25.6 C (-14.1 F)
1968-26.1 C (-15.0 F)
1969-22.2 C (-8.0 F)
1970-22.8 C (-9.0 F)
1971-25.6 C (-14.1 F)
1972-28.3 C (-18.9 F)
1973-22.8 C (-9.0 F)
1974-24.4 C (-11.9 F)
1975-23.9 C (-11.0 F)
1976-20.6 C (-5.1 F)
1977-24.4 C (-11.9 F)
1978-27.8 C (-18.0 F)
1979-27.2 C (-17.0 F)
1980-26.7 C (-16.1 F)
1981-28.3 C (-18.9 F)
1982-31.7 C (-25.1 F)
1983-29.4 C (-20.9 F)
1984-33.9 C (-29.0 F)
1985-30.0 C (-22.0 F)
1986-23.9 C (-11.0 F)
1987-25.6 C (-14.1 F)
1988-23.9 C (-11.0 F)
1989-32.2 C (-26.0 F)
1990-34.4 C (-29.9 F)
1991-23.9 C (-11.0 F)
1992-21.1 C (-6.0 F)
1993-23.9 C (-11.0 F)
1994-21.7 C (-7.1 F)
1995-25.0 C (-13.0 F)
1996-30.0 C (-22.0 F)
1997-25.6 C (-14.1 F)
1998-25.0 C (-13.0 F)
1999-20.0 C (-4.0 F)
2000-18.3 C (-0.9 F)
2001-23.9 C (-11.0 F)
2002-25.0 C (-13.0 F)
2003-21.1 C (-6.0 F)
2004-22.8 C (-9.0 F)
2005-25.0 C (-13.0 F)
2006-25.6 C (-14.1 F)
2007-24.4 C (-11.9 F)
2008-28.9 C (-20.0 F)
2009-25.0 C (-13.0 F)
2010-25.6 C (-14.1 F)
2011-28.3 C (-18.9 F)
2012-20.6 C (-5.1 F)
2013-27.8 C (-18.0 F)
2014-28.9 C (-20.0 F)
2015-22.2 C (-8.0 F)
2016-30.6 C (-23.1 F)
2017-27.2 C (-17.0 F)
2018-24.4 C (-11.9 F)
2019-22.2 C (-8.0 F)
2020-22.2 C (-8.0 F)
2021-28.3 C (-18.9 F)
2022-28.3 C (-18.9 F)
2023-28.3 C (-18.9 F)
2024-28.9 C (-20.0 F)
2025-28.3 C (-18.9 F)
2026-22.8 C (-9.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Waterdale by year The wettest day of the year at Waterdale, 1902 to 2026. The record is 135.9 mm (5.4 in) in 1938, marked on the chart; the median year is 41.7 mm (1.6 in). 050100150192019401960198020002020Record: 135.9 mm (5.4 in) in 1938
The wettest day of the year at Waterdale, 1902 to 2026. The record is 135.9 mm (5.4 in) in 1938, marked on the chart; the median year is 41.7 mm (1.6 in).
Wettest day (Rx1day) at Waterdale by year
YearWettest day (Rx1day)
190297.8 mm (3.9 in)
190324.1 mm (0.9 in)
190489.9 mm (3.5 in)
190567.1 mm (2.6 in)
190638.9 mm (1.5 in)
190767.3 mm (2.6 in)
190848.8 mm (1.9 in)
190962.5 mm (2.5 in)
191029.7 mm (1.2 in)
191132.8 mm (1.3 in)
191234.3 mm (1.4 in)
191378.7 mm (3.1 in)
191431.8 mm (1.3 in)
191564.0 mm (2.5 in)
191654.6 mm (2.1 in)
191734.8 mm (1.4 in)
191832.3 mm (1.3 in)
191917.5 mm (0.7 in)
192045.5 mm (1.8 in)
192159.2 mm (2.3 in)
192223.6 mm (0.9 in)
192381.3 mm (3.2 in)
192443.2 mm (1.7 in)
192542.7 mm (1.7 in)
192641.4 mm (1.6 in)
192735.3 mm (1.4 in)
192843.2 mm (1.7 in)
192954.6 mm (2.1 in)
193089.9 mm (3.5 in)
193122.4 mm (0.9 in)
193229.2 mm (1.1 in)
193342.9 mm (1.7 in)
193425.1 mm (1.0 in)
193548.3 mm (1.9 in)
193633.5 mm (1.3 in)
193731.8 mm (1.3 in)
1938135.9 mm (5.4 in)
193919.3 mm (0.8 in)
194025.7 mm (1.0 in)
194127.9 mm (1.1 in)
194241.9 mm (1.6 in)
194334.5 mm (1.4 in)
194447.2 mm (1.9 in)
194522.9 mm (0.9 in)
194682.6 mm (3.3 in)
194747.0 mm (1.9 in)
194828.4 mm (1.1 in)
194993.0 mm (3.7 in)
195051.3 mm (2.0 in)
1951106.2 mm (4.2 in)
195235.6 mm (1.4 in)
195338.1 mm (1.5 in)
195415.2 mm (0.6 in)
195539.6 mm (1.6 in)
195624.9 mm (1.0 in)
195774.9 mm (2.9 in)
195856.6 mm (2.2 in)
195943.7 mm (1.7 in)
196030.2 mm (1.2 in)
196147.2 mm (1.9 in)
196225.9 mm (1.0 in)
196379.2 mm (3.1 in)
196426.7 mm (1.1 in)
196528.7 mm (1.1 in)
196620.3 mm (0.8 in)
196753.1 mm (2.1 in)
196838.1 mm (1.5 in)
196950.5 mm (2.0 in)
197061.5 mm (2.4 in)
197143.4 mm (1.7 in)
197222.4 mm (0.9 in)
197340.9 mm (1.6 in)
197443.7 mm (1.7 in)
197562.5 mm (2.5 in)
197638.4 mm (1.5 in)
197751.8 mm (2.0 in)
197875.4 mm (3.0 in)
197936.8 mm (1.4 in)
198069.9 mm (2.8 in)
198130.2 mm (1.2 in)
198278.7 mm (3.1 in)
198358.4 mm (2.3 in)
198450.8 mm (2.0 in)
198525.9 mm (1.0 in)
198645.7 mm (1.8 in)
198736.6 mm (1.4 in)
198833.0 mm (1.3 in)
198946.5 mm (1.8 in)
199057.2 mm (2.3 in)
199136.8 mm (1.4 in)
199233.0 mm (1.3 in)
199355.9 mm (2.2 in)
199459.9 mm (2.4 in)
199550.8 mm (2.0 in)
199640.1 mm (1.6 in)
199757.4 mm (2.3 in)
199839.9 mm (1.6 in)
199956.1 mm (2.2 in)
200032.5 mm (1.3 in)
200131.0 mm (1.2 in)
200243.9 mm (1.7 in)
200359.7 mm (2.4 in)
200451.6 mm (2.0 in)
200533.5 mm (1.3 in)
200631.8 mm (1.3 in)
200759.2 mm (2.3 in)
200836.8 mm (1.4 in)
200938.4 mm (1.5 in)
201081.3 mm (3.2 in)
201142.9 mm (1.7 in)
201257.2 mm (2.3 in)
201374.2 mm (2.9 in)
201433.0 mm (1.3 in)
201548.8 mm (1.9 in)
201625.7 mm (1.0 in)
201740.6 mm (1.6 in)
201846.5 mm (1.8 in)
201941.4 mm (1.6 in)
202025.7 mm (1.0 in)
202141.7 mm (1.6 in)
202219.1 mm (0.8 in)
202324.1 mm (0.9 in)
202431.2 mm (1.2 in)
202524.9 mm (1.0 in)
202627.4 mm (1.1 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Waterdale by year The wettest five days of the year at Waterdale, 1902 to 2026. The record is 234.4 mm (9.2 in) in 1938, marked on the chart; the median year is 59.3 mm (2.3 in). 0100200300192019401960198020002020Record: 234.4 mm (9.2 in) in 1938
The wettest five days of the year at Waterdale, 1902 to 2026. The record is 234.4 mm (9.2 in) in 1938, marked on the chart; the median year is 59.3 mm (2.3 in).
Wettest five days (Rx5day) at Waterdale by year
YearWettest five days (Rx5day)
190297.8 mm (3.9 in)
190334.6 mm (1.4 in)
190499.5 mm (3.9 in)
190571.4 mm (2.8 in)
190647.0 mm (1.9 in)
190796.0 mm (3.8 in)
190861.8 mm (2.4 in)
190978.8 mm (3.1 in)
191048.0 mm (1.9 in)
191137.4 mm (1.5 in)
191253.4 mm (2.1 in)
191378.7 mm (3.1 in)
191459.3 mm (2.3 in)
191564.0 mm (2.5 in)
191668.6 mm (2.7 in)
191763.8 mm (2.5 in)
191854.6 mm (2.1 in)
191918.3 mm (0.7 in)
192045.5 mm (1.8 in)
1921122.2 mm (4.8 in)
192240.3 mm (1.6 in)
192397.8 mm (3.9 in)
192488.7 mm (3.5 in)
192543.2 mm (1.7 in)
192647.2 mm (1.9 in)
192752.6 mm (2.1 in)
192847.8 mm (1.9 in)
192997.5 mm (3.8 in)
1930151.6 mm (6.0 in)
193131.8 mm (1.3 in)
193239.4 mm (1.6 in)
193362.8 mm (2.5 in)
193439.8 mm (1.6 in)
193563.4 mm (2.5 in)
193645.5 mm (1.8 in)
193738.9 mm (1.5 in)
1938234.4 mm (9.2 in)
193923.4 mm (0.9 in)
194047.0 mm (1.9 in)
194143.5 mm (1.7 in)
194254.9 mm (2.2 in)
194361.4 mm (2.4 in)
194473.6 mm (2.9 in)
194542.4 mm (1.7 in)
194696.1 mm (3.8 in)
194760.2 mm (2.4 in)
194847.5 mm (1.9 in)
1949145.0 mm (5.7 in)
195056.8 mm (2.2 in)
1951130.9 mm (5.2 in)
195244.0 mm (1.7 in)
195347.8 mm (1.9 in)
195417.0 mm (0.7 in)
195554.5 mm (2.1 in)
195645.9 mm (1.8 in)
195782.6 mm (3.3 in)
195882.0 mm (3.2 in)
195966.9 mm (2.6 in)
196034.6 mm (1.4 in)
196169.3 mm (2.7 in)
196239.0 mm (1.5 in)
196382.8 mm (3.3 in)
196449.5 mm (1.9 in)
196559.4 mm (2.3 in)
196626.7 mm (1.1 in)
196775.1 mm (3.0 in)
196866.8 mm (2.6 in)
196989.9 mm (3.5 in)
197070.4 mm (2.8 in)
1971109.5 mm (4.3 in)
197244.7 mm (1.8 in)
197348.3 mm (1.9 in)
197465.8 mm (2.6 in)
197582.9 mm (3.3 in)
197644.1 mm (1.7 in)
197792.0 mm (3.6 in)
1978111.5 mm (4.4 in)
197973.7 mm (2.9 in)
198088.2 mm (3.5 in)
198146.7 mm (1.8 in)
1982112.7 mm (4.4 in)
198372.9 mm (2.9 in)
198480.8 mm (3.2 in)
198536.5 mm (1.4 in)
198647.5 mm (1.9 in)
198752.6 mm (2.1 in)
198845.9 mm (1.8 in)
198961.0 mm (2.4 in)
1990104.2 mm (4.1 in)
199171.9 mm (2.8 in)
199259.2 mm (2.3 in)
199318.8 mm (0.7 in)
199466.5 mm (2.6 in)
199583.6 mm (3.3 in)
1996100.4 mm (4.0 in)
199798.3 mm (3.9 in)
199854.6 mm (2.1 in)
199974.6 mm (2.9 in)
200053.1 mm (2.1 in)
200152.8 mm (2.1 in)
200259.3 mm (2.3 in)
200384.3 mm (3.3 in)
200492.2 mm (3.6 in)
200556.1 mm (2.2 in)
200638.8 mm (1.5 in)
200763.3 mm (2.5 in)
200855.9 mm (2.2 in)
200965.0 mm (2.6 in)
2010102.9 mm (4.1 in)
201157.8 mm (2.3 in)
201289.4 mm (3.5 in)
2013179.9 mm (7.1 in)
201455.9 mm (2.2 in)
201576.0 mm (3.0 in)
201635.6 mm (1.4 in)
201780.5 mm (3.2 in)
201851.6 mm (2.0 in)
201942.9 mm (1.7 in)
202038.6 mm (1.5 in)
202153.7 mm (2.1 in)
202238.0 mm (1.5 in)
202364.5 mm (2.5 in)
202449.7 mm (2.0 in)
202531.5 mm (1.2 in)
202648.8 mm (1.9 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Waterdale by year The longest dry spell of the year at Waterdale, 1902 to 2026. The record is 62 days in 1959, marked on the chart; the median year is 33 days. 020406080192019401960198020002020Record: 62 days in 1959
The longest dry spell of the year at Waterdale, 1902 to 2026. The record is 62 days in 1959, marked on the chart; the median year is 33 days.
Longest dry spell (CDD) at Waterdale by year
YearLongest dry spell (CDD)
190233 days
190335 days
190445 days
190525 days
190639 days
190743 days
190847 days
190930 days
191043 days
191125 days
191250 days
191352 days
191429 days
191545 days
191627 days
191731 days
191818 days
191935 days
192035 days
192128 days
192229 days
192327 days
192427 days
192535 days
192628 days
192726 days
192832 days
192919 days
193031 days
193151 days
193227 days
193351 days
193440 days
193552 days
193655 days
193731 days
193821 days
193954 days
194031 days
194146 days
194226 days
194351 days
194440 days
194530 days
194636 days
194729 days
194840 days
194941 days
195030 days
195127 days
195259 days
195330 days
195434 days
195535 days
195631 days
195745 days
195834 days
195962 days
196021 days
196124 days
196235 days
196327 days
196433 days
196556 days
196627 days
196722 days
196834 days
196934 days
197059 days
197131 days
197234 days
197334 days
197429 days
197524 days
197641 days
197739 days
197851 days
197931 days
198031 days
198149 days
198232 days
198331 days
198452 days
198525 days
198650 days
198741 days
198833 days
198935 days
199025 days
199156 days
199251 days
199324 days
199425 days
199537 days
199627 days
199731 days
199840 days
199938 days
200029 days
200123 days
200247 days
200354 days
200428 days
200542 days
200632 days
200730 days
200842 days
200923 days
201033 days
201132 days
201240 days
201328 days
201428 days
201530 days
201639 days
201730 days
201828 days
201918 days
202043 days
202141 days
202223 days
202325 days
202437 days
202531 days
202637 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

98 years with a frost

Across 98 years with a frost, the median last spring frost at Waterdale falls on 14 May and the median first autumn frost on 28 September, which leaves a median of 135 days between them.

In 1988 to 2025 the median growing season was 146 days. That is 22 days more than in 1903 to 1947.

Fitted over all years, the growing season changes by +1.8 days per decade at this station.

Frost dates and growing season at Waterdale
MeasureMedian, all yearsEarliest period (1903 to 1947)Recent period (1988 to 2025)Recent against earliestFitted trend
Last spring frost14 May16 May11 May5 days earlier-0.6 days per decade
First autumn frost28 September21 September5 October14 days later+1.1 days per decade
Growing days135 days124 days146 days22 days more+1.8 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

109 years, 1902 to 2025

A day with at least 41.6 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 123.7 mm (4.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Waterdale: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years41.6 mm (1.6 in)
5 years59.8 mm (2.4 in)
10 years73.2 mm (2.9 in)
25 years91.9 mm (3.6 in)
50 years107.2 mm (4.2 in)
100 years123.7 mm (4.9 in)

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 109 years of values from 1902 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: 135.9 mm (5.4 in) in 1938; 106.2 mm (4.2 in) in 1951; 97.8 mm (3.9 in) in 1902.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of Waterdale, at 1932. Each is measured against neighbouring stations.

  • Relative to 5 neighbouring stations, the station's annual mean temperature from 1932 ran 0.5 C (0.9 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Waterdale, against neighbouring stations
YearShift (C)Shift (F)StrengthNeighbours
1932+0.5+0.9likely5

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

2006 to 2025 against 1961 to 1990

Over 2006 to 2025, Waterdale had a mean temperature of 9.6 C (49.3 F) and 408.5 mm (16.1 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Mesa Verde Np (United States, 458 km away), Colorado Springs Muni AP (United States, 185 km away) and Betatakin (United States, 623 km away).

Climate twins of Waterdale: stations whose 1961 to 1990 climate is closest to its 2006 to 2025 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
Mesa Verde NpUnited States458 km (285 mi)9.6 C (49.3 F)465.3 mm (18.3 in)0.75
Colorado Springs Muni APUnited States185 km (115 mi)9.2 C (48.6 F)413.6 mm (16.3 in)0.82
BetatakinUnited States623 km (387 mi)9.8 C (49.6 F)312.7 mm (12.3 in)0.83

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