Built 2026-10-14 (14 October 2026)

Duchesne Weather Records (USC00422253)

Record envelope, standing records and threshold days for Duchesne (USC00422253), Utah, United States, with 121 years of record.

Key Facts for Duchesne

  • Duchesne (USC00422253) is a weather station in Utah, United States at 40.17 latitude and -110.40 longitude, 1,692 m (5,551 ft) above sea level.
  • The station reports from 1906 to 2026, 121 years of record.
  • 1,464 records set at Duchesne still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Duchesne set a daily record precipitation of 29.5 mm (1.2 in) on 16 September 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Utah, United States, 40.17 latitude, -110.40 longitude.
  • Elevation: 1,692 m (5,551 ft).
  • Period of record: 1906 to 2026, 121 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

25 days at or beyond a record
Daily record high and record low at Duchesne, with 2026 drawn through them The band shows the record high and record low for each calendar day at Duchesne. The lines show the 2026 daily maximum and minimum. 25 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 Duchesne. The lines show the 2026 daily maximum and minimum. 25 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Duchesne, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan16.1 C (61.0 F)-41.7 C (-43.1 F)12.2 C (54.0 F)-17.8 C (0.0 F)
Feb22.8 C (73.0 F)-40.0 C (-40.0 F)17.8 C (64.0 F)-11.1 C (12.0 F)
Mar30.6 C (87.1 F)-26.7 C (-16.1 F)30.6 C (87.1 F)-6.7 C (19.9 F)
Apr28.9 C (84.0 F)-15.6 C (3.9 F)24.4 C (75.9 F)-7.2 C (19.0 F)
May33.9 C (93.0 F)-9.4 C (15.1 F)32.8 C (91.0 F)-0.6 C (30.9 F)
Jun37.2 C (99.0 F)-3.9 C (25.0 F)33.3 C (91.9 F)6.1 C (43.0 F)
Jul38.3 C (100.9 F)1.7 C (35.1 F)37.2 C (99.0 F)8.3 C (46.9 F)
Aug38.3 C (100.9 F)-3.3 C (26.1 F)37.8 C (100.0 F)10.0 C (50.0 F)
Sep36.1 C (97.0 F)-8.9 C (16.0 F)30.0 C (86.0 F)5.0 C (41.0 F)
Oct29.4 C (84.9 F)-16.1 C (3.0 F)24.4 C (75.9 F)6.7 C (44.1 F)
Nov22.8 C (73.0 F)-27.2 C (-17.0 F)n/an/a
Dec17.2 C (63.0 F)-39.4 C (-38.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Duchesne by the year they were set 1,464 records at Duchesne still stand. 2026 holds the most, with 33. 0102030401906: 141907: 81908: 231909: 211910: 101911: 151912: 151913: 151914: 71915: 111916: 191917: 131918: 191919: 151920: 101921: 171922: 141923: 151924: 321925: 101926: 221927: 131928: 121929: 151930: 221931: 291932: 201933: 241934: 141935: 81936: 151937: 251938: 101939: 71940: 101941: 51942: 71943: 161944: 51945: 91946: 81947: 91948: 131949: 171950: 181951: 61952: 211953: 71954: 141955: 291956: 41957: 81958: 281959: 81960: 131961: 61962: 211963: 41964: 71965: 161966: 111967: 61968: 31969: 151970: 151971: 171972: 191973: 71980: 41981: 101982: 91983: 61984: 171985: 121986: 161987: 111988: 101989: 241990: 141991: 91992: 51993: 91994: 71995: 161996: 91997: 81998: 61999: 52000: 172001: 22002: 132003: 52004: 22005: 42006: 22007: 142008: 42009: 42010: 42011: 82012: 122013: 162014: 122015: 242016: 92017: 182018: 122019: 92020: 152021: 202022: 202023: 32024: 92025: 252026: 331906191819301942195419661984199620082020
1,464 records at Duchesne still stand. 2026 holds the most, with 33.
Standing records at Duchesne by the year they were set
Year setStanding records
190614
19078
190823
190921
191010
191115
191215
191315
19147
191511
191619
191713
191819
191915
192010
192117
192214
192315
192432
192510
192622
192713
192812
192915
193022
193129
193220
193324
193414
19358
193615
193725
193810
19397
194010
19415
19427
194316
19445
19459
19468
19479
194813
194917
195018
19516
195221
19537
195414
195529
19564
19578
195828
19598
196013
19616
196221
19634
19647
196516
196611
19676
19683
196915
197015
197117
197219
19737
19804
198110
19829
19836
198417
198512
198616
198711
198810
198924
199014
19919
19925
19939
19947
199516
19969
19978
19986
19995
200017
20012
200213
20035
20042
20054
20062
200714
20084
20094
20104
20118
201212
201316
201412
201524
20169
201718
201812
20199
202015
202120
202220
20233
20249
202525
202633

All-Time Record Progression

9 new records
When Duchesne set new all-time records 9 all-time records were set at Duchesne between 1 January 1937 and 4 August 1970. Each dot is a new record. Record daily precipitationRecord daily snowfallRecord low maximum temperatureRecord low minimum temperatureRecord high maximum temperatureRecord snow depth1 January 1937: Record daily precipitation 50.8 mm (2.0 in)1 January 1937: Record daily snowfall 38.1 cm (15.0 in)9 January 1937: Record low maximum temperature -20.6 C (-5.1 F)9 January 1937: Record low minimum temperature -41.7 C (-43.1 F)22 January 1937: Record low maximum temperature -21.7 C (-7.1 F)23 July 1940: Record high maximum temperature 37.2 C (99.0 F)30 December 1951: Record daily snowfall 49.5 cm (19.5 in)30 December 1951: Record snow depth 63.5 cm (25.0 in)4 August 1970: Record high maximum temperature 38.3 C (100.9 F)1940194519501955196019651970
9 all-time records were set at Duchesne between 1 January 1937 and 4 August 1970. Each dot is a new record.
When Duchesne set new all-time records
DateKindDetail
1937-01-01Record daily precipitationRecord daily precipitation 50.8 mm (2.0 in)
1937-01-01Record daily snowfallRecord daily snowfall 38.1 cm (15.0 in)
1937-01-09Record low maximum temperatureRecord low maximum temperature -20.6 C (-5.1 F)
1937-01-09Record low minimum temperatureRecord low minimum temperature -41.7 C (-43.1 F)
1937-01-22Record low maximum temperatureRecord low maximum temperature -21.7 C (-7.1 F)
1940-07-23Record high maximum temperatureRecord high maximum temperature 37.2 C (99.0 F)
1951-12-30Record daily snowfallRecord daily snowfall 49.5 cm (19.5 in)
1951-12-30Record snow depthRecord snow depth 63.5 cm (25.0 in)
1970-08-04Record high maximum temperatureRecord high maximum temperature 38.3 C (100.9 F)

Wettest Day of Each Month

Jan: 50.8 mm (2.0 in)
Record daily precipitation for each month at Duchesne The wettest day on record for each calendar month at Duchesne. The most was 50.8 mm (2.0 in) on 1 January 1937. 0204060 Jan: 50.8 mm (2.0 in), 1 January 1937 Jan Feb: 25.4 mm (1.0 in), 18 February 1927 Feb Mar: 27.9 mm (1.1 in), 3 March 1927 Mar Apr: 27.9 mm (1.1 in), 16 April 2013 Apr May: 43.7 mm (1.7 in), 30 May 1937 May Jun: 32.5 mm (1.3 in), 7 June 1941 Jun Jul: 38.4 mm (1.5 in), 7 July 2006 Jul Aug: 43.9 mm (1.7 in), 23 August 1995 Aug Sep: 42.9 mm (1.7 in), 1 September 1909 Sep Oct: 41.9 mm (1.6 in), 12 October 1928 Oct Nov: 33.0 mm (1.3 in), 3 November 1957 Nov Dec: 42.4 mm (1.7 in), 30 December 1951 Dec
The wettest day on record for each calendar month at Duchesne. The most was 50.8 mm (2.0 in) on 1 January 1937.
Record daily precipitation for each month at Duchesne
MonthRecord daily precipitation (mm)Date
Jan50.8 mm (2.0 in)1 January 1937
Feb25.4 mm (1.0 in)18 February 1927
Mar27.9 mm (1.1 in)3 March 1927
Apr27.9 mm (1.1 in)16 April 2013
May43.7 mm (1.7 in)30 May 1937
Jun32.5 mm (1.3 in)7 June 1941
Jul38.4 mm (1.5 in)7 July 2006
Aug43.9 mm (1.7 in)23 August 1995
Sep42.9 mm (1.7 in)1 September 1909
Oct41.9 mm (1.6 in)12 October 1928
Nov33.0 mm (1.3 in)3 November 1957
Dec42.4 mm (1.7 in)30 December 1951

Period of Record Coverage

1906 to 2026
Days with data per year at Duchesne 115 years of record at Duchesne, 1906 to 2026. 18 years have data for under 90 percent of days and are left out of rankings: 1906, 1970, 1973, 1980, 1987, 1988, 1999, 2000 and others. 1906: 268 of 365 days1907: 353 of 365 days1908: 366 of 366 days1909: 354 of 365 days1910: 365 of 365 days1911: 365 of 365 days1912: 366 of 366 days1913: 364 of 365 days1914: 364 of 365 days1915: 365 of 365 days1916: 366 of 366 days1917: 365 of 365 days1918: 365 of 365 days1919: 365 of 365 days1920: 365 of 366 days1921: 364 of 365 days1922: 364 of 365 days1923: 365 of 365 days1924: 366 of 366 days1925: 365 of 365 days1926: 365 of 365 days1927: 364 of 365 days1928: 366 of 366 days1929: 362 of 365 days1930: 363 of 365 days1931: 363 of 365 days1932: 365 of 366 days1933: 362 of 365 days1934: 364 of 365 days1935: 365 of 365 days1936: 366 of 366 days1937: 360 of 365 days1938: 365 of 365 days1939: 364 of 365 days1940: 365 of 366 days1941: 364 of 365 days1942: 364 of 365 days1943: 364 of 365 days1944: 364 of 366 days1945: 365 of 365 days1946: 363 of 365 days1947: 361 of 365 days1948: 349 of 366 days1949: 363 of 365 days1950: 363 of 365 days1951: 359 of 365 days1952: 364 of 366 days1953: 360 of 365 days1954: 365 of 365 days1955: 364 of 365 days1956: 340 of 366 days1957: 362 of 365 days1958: 364 of 365 days1959: 365 of 365 days1960: 366 of 366 days1961: 365 of 365 days1962: 360 of 365 days1963: 364 of 365 days1964: 365 of 366 days1965: 362 of 365 days1966: 365 of 365 days1967: 364 of 365 days1968: 364 of 366 days1969: 365 of 365 days1970: 319 of 365 days1971: 365 of 365 days1972: 363 of 366 days1973: 212 of 365 days1980: 61 of 366 days1981: 361 of 365 days1982: 341 of 365 days1983: 348 of 365 days1984: 334 of 366 days1985: 343 of 365 days1986: 344 of 365 days1987: 324 of 365 days1988: 324 of 366 days1989: 337 of 365 days1990: 356 of 365 days1991: 360 of 365 days1992: 361 of 366 days1993: 357 of 365 days1994: 354 of 365 days1995: 354 of 365 days1996: 359 of 366 days1997: 332 of 365 days1998: 337 of 365 days1999: 321 of 365 days2000: 326 of 366 days2001: 324 of 365 days2002: 331 of 365 days2003: 331 of 365 days2004: 323 of 366 days2005: 328 of 365 days2006: 323 of 365 days2007: 328 of 365 days2008: 316 of 366 days2009: 322 of 365 days2010: 322 of 365 days2011: 313 of 365 days2012: 338 of 366 days2013: 362 of 365 days2014: 362 of 365 days2015: 359 of 365 days2016: 363 of 366 days2017: 364 of 365 days2018: 364 of 365 days2019: 365 of 365 days2020: 366 of 366 days2021: 365 of 365 days2022: 363 of 365 days2023: 365 of 365 days2024: 365 of 366 days2025: 352 of 365 days2026: 251 of 365 days19201935195019651980199520102025
115 years of record at Duchesne, 1906 to 2026. 18 years have data for under 90 percent of days and are left out of rankings: 1906, 1970, 1973, 1980, 1987, 1988, 1999, 2000 and others.
Days with data per year at Duchesne
YearDays with dataShare of yearComplete
190626873%No
190735397%Yes
1908366100%Yes
190935497%Yes
1910365100%Yes
1911365100%Yes
1912366100%Yes
1913364100%Yes
1914364100%Yes
1915365100%Yes
1916366100%Yes
1917365100%Yes
1918365100%Yes
1919365100%Yes
1920365100%Yes
1921364100%Yes
1922364100%Yes
1923365100%Yes
1924366100%Yes
1925365100%Yes
1926365100%Yes
1927364100%Yes
1928366100%Yes
192936299%Yes
193036399%Yes
193136399%Yes
1932365100%Yes
193336299%Yes
1934364100%Yes
1935365100%Yes
1936366100%Yes
193736099%Yes
1938365100%Yes
1939364100%Yes
1940365100%Yes
1941364100%Yes
1942364100%Yes
1943364100%Yes
194436499%Yes
1945365100%Yes
194636399%Yes
194736199%Yes
194834995%Yes
194936399%Yes
195036399%Yes
195135998%Yes
195236499%Yes
195336099%Yes
1954365100%Yes
1955364100%Yes
195634093%Yes
195736299%Yes
1958364100%Yes
1959365100%Yes
1960366100%Yes
1961365100%Yes
196236099%Yes
1963364100%Yes
1964365100%Yes
196536299%Yes
1966365100%Yes
1967364100%Yes
196836499%Yes
1969365100%Yes
197031987%No
1971365100%Yes
197236399%Yes
197321258%No
19806117%No
198136199%Yes
198234193%Yes
198334895%Yes
198433491%Yes
198534394%Yes
198634494%Yes
198732489%No
198832489%No
198933792%Yes
199035698%Yes
199136099%Yes
199236199%Yes
199335798%Yes
199435497%Yes
199535497%Yes
199635998%Yes
199733291%Yes
199833792%Yes
199932188%No
200032689%No
200132489%No
200233191%Yes
200333191%Yes
200432388%No
200532890%No
200632388%No
200732890%No
200831686%No
200932288%No
201032288%No
201131386%No
201233892%Yes
201336299%Yes
201436299%Yes
201535998%Yes
201636399%Yes
2017364100%Yes
2018364100%Yes
2019365100%Yes
2020366100%Yes
2021365100%Yes
202236399%Yes
2023365100%Yes
2024365100%Yes
202535296%Yes
202625169%No

Latest Records

20
Latest records at Duchesne
DateStationRecordValueBeat old record byOld record stoodSignificance
16 September 2026Duchesne, USdaily rain (Provisional)29.5 mm (1.2 in)16.5 mm (0.6 in)116 years68 of 100 (Major)
14 September 2026Duchesne, USdaily high min (Tie, Provisional)12.2 C (54.0 F)tie55 years6 of 100 (Routine)
30 August 2026Duchesne, USdaily rain (Provisional)30.5 mm (1.2 in)16.5 mm (0.6 in)119 years73 of 100 (Major)
9 August 2026Duchesne, USdaily high min19.4 C (66.9 F)0.5 C (0.9 F)36 years22 of 100 (Routine)
8 August 2026Duchesne, USdaily high min18.9 C (66.0 F)0.6 C (1.1 F)112 years41 of 100 (Notable)
7 August 2026Duchesne, USdaily high max36.7 C (98.1 F)1.7 C (3.1 F)68 years35 of 100 (Notable)
6 August 2026Duchesne, USdaily high max35.6 C (96.1 F)0.6 C (1.1 F)68 years32 of 100 (Routine)
2 August 2026Duchesne, USdaily high max37.8 C (100.0 F)1.7 C (3.1 F)68 years35 of 100 (Notable)
1 August 2026Duchesne, USdaily high max37.8 C (100.0 F)2.2 C (4.0 F)72 years38 of 100 (Notable)
27 July 2026Duchesne, USdaily high min (Tie)18.3 C (64.9 F)tie108 years10 of 100 (Routine)
26 July 2026Duchesne, USdaily high min19.4 C (66.9 F)1.1 C (2.0 F)23 years19 of 100 (Routine)
21 July 2026Duchesne, USdaily high min (Tie)20.0 C (68.0 F)tie56 years6 of 100 (Routine)
14 July 2026Duchesne, USdaily high max (Tie)36.7 C (98.1 F)tie100 years10 of 100 (Routine)
13 July 2026Duchesne, USdaily high min17.2 C (63.0 F)0.5 C (0.9 F)112 years41 of 100 (Notable)
12 July 2026Duchesne, USdaily high max (Tie)36.7 C (98.1 F)tie68 years7 of 100 (Routine)
11 July 2026Duchesne, USdaily high max37.2 C (99.0 F)0.5 C (0.9 F)68 years31 of 100 (Routine)
18 May 2026Duchesne, USdaily rain21.8 mm (0.9 in)8.1 mm (0.32 in)15 years20 of 100 (Routine)
18 May 2026Duchesne, USdaily low max10.6 C (51.1 F)0.5 C (0.9 F)8 years13 of 100 (Routine)
13 May 2026Duchesne, USdaily high max31.7 C (89.1 F)1.1 C (2.0 F)29 years20 of 100 (Routine)
12 May 2026Duchesne, USdaily high max32.8 C (91.0 F)1.1 C (2.0 F)65 years31 of 100 (Routine)

Climate Trend

104 complete years, 1907 to 2024
Annual mean temperature at Duchesne as warming stripes, 1907 to 2024 One stripe for each of 104 complete years at Duchesne, 1907 to 2024. Blue stripes are years cooler than the station's own mean of 7.6 C (45.7 F); red stripes are warmer. The coolest year was 1932, at 5.1 C (41.1 F), and the warmest was 2018, at 10.3 C (50.6 F). The strongest colour marks a difference of 2.8 C (5.0 F). 1907: 8.1 C, +0.5 C from the station mean1908: 5.2 C, -2.4 C from the station mean1910: 7.2 C, -0.4 C from the station mean1911: 6.5 C, -1.1 C from the station mean1912: 5.8 C, -1.8 C from the station mean1913: 6.2 C, -1.4 C from the station mean1914: 6.5 C, -1.1 C from the station mean1915: 7.0 C, -0.6 C from the station mean1916: 5.4 C, -2.2 C from the station mean1917: 6.5 C, -1.1 C from the station mean1918: 7.4 C, -0.2 C from the station mean1919: 5.6 C, -2.0 C from the station mean1920: 5.9 C, -1.7 C from the station mean1921: 8.2 C, +0.6 C from the station mean1922: 6.2 C, -1.4 C from the station mean1923: 5.7 C, -1.8 C from the station mean1924: 6.0 C, -1.6 C from the station mean1925: 6.7 C, -0.9 C from the station mean1926: 7.0 C, -0.6 C from the station mean1927: 6.5 C, -1.0 C from the station mean1928: 6.9 C, -0.7 C from the station mean1929: 6.0 C, -1.5 C from the station mean1930: 5.5 C, -2.1 C from the station mean1931: 5.9 C, -1.7 C from the station mean1932: 5.1 C, -2.5 C from the station mean1933: 6.0 C, -1.5 C from the station mean1934: 9.0 C, +1.4 C from the station mean1935: 6.9 C, -0.7 C from the station mean1936: 7.2 C, -0.4 C from the station mean1937: 6.3 C, -1.3 C from the station mean1938: 8.0 C, +0.4 C from the station mean1939: 7.5 C, -0.1 C from the station mean1940: 8.0 C, +0.4 C from the station mean1941: 6.9 C, -0.7 C from the station mean1942: 7.1 C, -0.5 C from the station mean1943: 7.9 C, +0.3 C from the station mean1944: 6.2 C, -1.4 C from the station mean1945: 7.3 C, -0.3 C from the station mean1946: 8.1 C, +0.5 C from the station mean1947: 7.0 C, -0.6 C from the station mean1949: 5.7 C, -1.9 C from the station mean1950: 6.7 C, -0.9 C from the station mean1953: 8.0 C, +0.4 C from the station mean1954: 8.6 C, +1.0 C from the station mean1955: 6.2 C, -1.4 C from the station mean1957: 7.3 C, -0.3 C from the station mean1958: 9.3 C, +1.7 C from the station mean1959: 8.6 C, +1.0 C from the station mean1960: 7.9 C, +0.3 C from the station mean1961: 8.0 C, +0.4 C from the station mean1962: 7.8 C, +0.3 C from the station mean1963: 8.7 C, +1.1 C from the station mean1964: 7.1 C, -0.5 C from the station mean1965: 7.0 C, -0.6 C from the station mean1966: 7.3 C, -0.3 C from the station mean1967: 7.0 C, -0.6 C from the station mean1968: 6.5 C, -1.1 C from the station mean1969: 7.8 C, +0.2 C from the station mean1971: 7.7 C, +0.1 C from the station mean1972: 8.9 C, +1.3 C from the station mean1981: 9.8 C, +2.2 C from the station mean1982: 7.7 C, +0.1 C from the station mean1983: 7.4 C, -0.2 C from the station mean1984: 6.1 C, -1.5 C from the station mean1985: 7.3 C, -0.3 C from the station mean1986: 9.1 C, +1.6 C from the station mean1987: 8.6 C, +1.0 C from the station mean1988: 8.0 C, +0.4 C from the station mean1989: 7.8 C, +0.2 C from the station mean1990: 8.3 C, +0.8 C from the station mean1991: 7.2 C, -0.4 C from the station mean1992: 8.0 C, +0.5 C from the station mean1993: 6.8 C, -0.8 C from the station mean1994: 9.1 C, +1.5 C from the station mean1995: 8.9 C, +1.3 C from the station mean1996: 8.8 C, +1.2 C from the station mean1997: 7.3 C, -0.3 C from the station mean1998: 8.5 C, +1.0 C from the station mean1999: 8.8 C, +1.2 C from the station mean2000: 9.3 C, +1.7 C from the station mean2001: 9.0 C, +1.4 C from the station mean2002: 8.0 C, +0.4 C from the station mean2003: 8.5 C, +0.9 C from the station mean2004: 7.9 C, +0.3 C from the station mean2005: 8.6 C, +1.0 C from the station mean2006: 8.4 C, +0.8 C from the station mean2007: 8.0 C, +0.4 C from the station mean2008: 6.8 C, -0.8 C from the station mean2009: 7.4 C, -0.2 C from the station mean2010: 7.2 C, -0.4 C from the station mean2011: 6.4 C, -1.2 C from the station mean2012: 9.3 C, +1.8 C from the station mean2013: 6.5 C, -1.0 C from the station mean2014: 9.0 C, +1.4 C from the station mean2015: 9.9 C, +2.3 C from the station mean2016: 9.7 C, +2.1 C from the station mean2017: 9.9 C, +2.4 C from the station mean2018: 10.3 C, +2.7 C from the station mean2019: 8.4 C, +0.8 C from the station mean2020: 9.5 C, +1.9 C from the station mean2021: 10.2 C, +2.6 C from the station mean2022: 9.4 C, +1.9 C from the station mean2023: 7.9 C, +0.3 C from the station mean2024: 9.8 C, +2.2 C from the station mean190719201930194019501960197019801990200020102020
One stripe for each of 104 complete years at Duchesne, 1907 to 2024. Blue stripes are years cooler than the station's own mean of 7.6 C (45.7 F); red stripes are warmer. The coolest year was 1932, at 5.1 C (41.1 F), and the warmest was 2018, at 10.3 C (50.6 F). The strongest colour marks a difference of 2.8 C (5.0 F).
Annual mean temperature at Duchesne as warming stripes, 1907 to 2024
YearAnnual mean temperatureDifference from the station mean
19078.1 C+0.46 C
19085.2 C-2.41 C
19107.2 C-0.36 C
19116.5 C-1.11 C
19125.8 C-1.77 C
19136.2 C-1.40 C
19146.5 C-1.07 C
19157.0 C-0.64 C
19165.4 C-2.16 C
19176.5 C-1.13 C
19187.4 C-0.17 C
19195.6 C-1.99 C
19205.9 C-1.68 C
19218.2 C+0.57 C
19226.2 C-1.37 C
19235.7 C-1.85 C
19246.0 C-1.63 C
19256.7 C-0.94 C
19267.0 C-0.59 C
19276.5 C-1.05 C
19286.9 C-0.70 C
19296.0 C-1.55 C
19305.5 C-2.11 C
19315.9 C-1.74 C
19325.1 C-2.51 C
19336.0 C-1.55 C
19349.0 C+1.44 C
19356.9 C-0.73 C
19367.2 C-0.39 C
19376.3 C-1.30 C
19388.0 C+0.42 C
19397.5 C-0.13 C
19408.0 C+0.36 C
19416.9 C-0.70 C
19427.1 C-0.53 C
19437.9 C+0.32 C
19446.2 C-1.41 C
19457.3 C-0.27 C
19468.1 C+0.48 C
19477.0 C-0.56 C
19495.7 C-1.88 C
19506.7 C-0.88 C
19538.0 C+0.40 C
19548.6 C+0.97 C
19556.2 C-1.40 C
19577.3 C-0.31 C
19589.3 C+1.72 C
19598.6 C+1.00 C
19607.9 C+0.26 C
19618.0 C+0.41 C
19627.8 C+0.25 C
19638.7 C+1.13 C
19647.1 C-0.47 C
19657.0 C-0.56 C
19667.3 C-0.28 C
19677.0 C-0.60 C
19686.5 C-1.06 C
19697.8 C+0.24 C
19717.7 C+0.06 C
19728.9 C+1.31 C
19819.8 C+2.20 C
19827.7 C+0.09 C
19837.4 C-0.19 C
19846.1 C-1.51 C
19857.3 C-0.32 C
19869.1 C+1.55 C
19878.6 C+1.00 C
19888.0 C+0.41 C
19897.8 C+0.19 C
19908.3 C+0.75 C
19917.2 C-0.43 C
19928.0 C+0.45 C
19936.8 C-0.84 C
19949.1 C+1.54 C
19958.9 C+1.34 C
19968.8 C+1.24 C
19977.3 C-0.33 C
19988.5 C+0.95 C
19998.8 C+1.21 C
20009.3 C+1.73 C
20019.0 C+1.44 C
20028.0 C+0.36 C
20038.5 C+0.94 C
20047.9 C+0.32 C
20058.6 C+0.98 C
20068.4 C+0.78 C
20078.0 C+0.38 C
20086.8 C-0.77 C
20097.4 C-0.19 C
20107.2 C-0.42 C
20116.4 C-1.18 C
20129.3 C+1.75 C
20136.5 C-1.05 C
20149.0 C+1.39 C
20159.9 C+2.29 C
20169.7 C+2.08 C
20179.9 C+2.35 C
201810.3 C+2.73 C
20198.4 C+0.79 C
20209.5 C+1.89 C
202110.2 C+2.58 C
20229.4 C+1.85 C
20237.9 C+0.30 C
20249.8 C+2.18 C

The annual mean temperature here has risen by 0.2 C (0.2 to 0.3) per decade over 1907 to 2024. In Fahrenheit: 0.4 F (0.3 to 0.5) per decade. The slope is a straight line fitted to 104 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Duchesne
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.2 C (0.2 to 0.3) per decade0.4 F (0.3 to 0.5) per decade1907 to 2024104Rise
Mean daily maximum0.11 C (0.05 to 0.16) per decade0.2 F (0.1 to 0.3) per decade1907 to 2024104Rise
Mean daily minimum0.4 C (0.3 to 0.4) per decade0.6 F (0.5 to 0.7) per decade1907 to 2024104Rise

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

1906 to 2026
Yearly extremes at Duchesne: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)38.3 C (100.9 F)197035.0 C (95.0 F)115
Coldest night (TNn)-41.7 C (-43.1 F)1937-26.1 C (-15.0 F)115
Wettest day (Rx1day)50.8 mm (2.0 in)193721.3 mm (0.8 in)115
Wettest five days (Rx5day)76.2 mm (3.0 in)192732.8 mm (1.3 in)115
Longest dry spell (CDD)93 days191040 days115

Hottest day (TXx)

Hottest day (TXx) at Duchesne by year The hottest day of the year at Duchesne, 1906 to 2026. The record is 38.3 C (100.9 F) in 1970, marked on the chart; the median year is 35.0 C (95.0 F). 2025303540192019401960198020002020Record: 38.3 C (100.9 F) in 1970
The hottest day of the year at Duchesne, 1906 to 2026. The record is 38.3 C (100.9 F) in 1970, marked on the chart; the median year is 35.0 C (95.0 F).
Hottest day (TXx) at Duchesne by year
YearHottest day (TXx)
190633.3 C (91.9 F)
190733.3 C (91.9 F)
190834.4 C (93.9 F)
190936.1 C (97.0 F)
191035.6 C (96.1 F)
191133.9 C (93.0 F)
191232.8 C (91.0 F)
191333.3 C (91.9 F)
191433.9 C (93.0 F)
191533.9 C (93.0 F)
191633.9 C (93.0 F)
191733.9 C (93.0 F)
191835.0 C (95.0 F)
191935.6 C (96.1 F)
192035.0 C (95.0 F)
192135.0 C (95.0 F)
192235.6 C (96.1 F)
192333.3 C (91.9 F)
192435.0 C (95.0 F)
192536.7 C (98.1 F)
192635.6 C (96.1 F)
192733.9 C (93.0 F)
192833.9 C (93.0 F)
192934.4 C (93.9 F)
193035.0 C (95.0 F)
193136.7 C (98.1 F)
193233.9 C (93.0 F)
193335.0 C (95.0 F)
193435.6 C (96.1 F)
193535.0 C (95.0 F)
193635.0 C (95.0 F)
193733.9 C (93.0 F)
193835.6 C (96.1 F)
193936.7 C (98.1 F)
194037.2 C (99.0 F)
194135.0 C (95.0 F)
194235.0 C (95.0 F)
194335.0 C (95.0 F)
194435.0 C (95.0 F)
194533.9 C (93.0 F)
194633.9 C (93.0 F)
194733.9 C (93.0 F)
194833.3 C (91.9 F)
194934.4 C (93.9 F)
195033.9 C (93.0 F)
195133.3 C (91.9 F)
195234.4 C (93.9 F)
195336.7 C (98.1 F)
195437.2 C (99.0 F)
195536.7 C (98.1 F)
195635.6 C (96.1 F)
195736.1 C (97.0 F)
195836.7 C (98.1 F)
195936.1 C (97.0 F)
196037.2 C (99.0 F)
196137.2 C (99.0 F)
196235.6 C (96.1 F)
196336.1 C (97.0 F)
196436.1 C (97.0 F)
196532.8 C (91.0 F)
196635.0 C (95.0 F)
196734.4 C (93.9 F)
196836.7 C (98.1 F)
196935.0 C (95.0 F)
197038.3 C (100.9 F)
197135.6 C (96.1 F)
197236.1 C (97.0 F)
197336.1 C (97.0 F)
198022.8 C (73.0 F)
198136.7 C (98.1 F)
198236.7 C (98.1 F)
198333.9 C (93.0 F)
198436.7 C (98.1 F)
198537.8 C (100.0 F)
198636.7 C (98.1 F)
198733.3 C (91.9 F)
198835.6 C (96.1 F)
198936.7 C (98.1 F)
199035.6 C (96.1 F)
199134.4 C (93.9 F)
199233.9 C (93.0 F)
199333.3 C (91.9 F)
199436.1 C (97.0 F)
199534.4 C (93.9 F)
199633.9 C (93.0 F)
199733.3 C (91.9 F)
199836.7 C (98.1 F)
199933.9 C (93.0 F)
200034.4 C (93.9 F)
200135.0 C (95.0 F)
200238.3 C (100.9 F)
200335.6 C (96.1 F)
200433.3 C (91.9 F)
200535.6 C (96.1 F)
200635.0 C (95.0 F)
200735.0 C (95.0 F)
200834.4 C (93.9 F)
200933.9 C (93.0 F)
201034.4 C (93.9 F)
201132.8 C (91.0 F)
201234.4 C (93.9 F)
201334.4 C (93.9 F)
201434.4 C (93.9 F)
201536.1 C (97.0 F)
201636.1 C (97.0 F)
201734.4 C (93.9 F)
201836.1 C (97.0 F)
201935.0 C (95.0 F)
202036.1 C (97.0 F)
202137.2 C (99.0 F)
202235.6 C (96.1 F)
202336.7 C (98.1 F)
202436.7 C (98.1 F)
202535.6 C (96.1 F)
202637.8 C (100.0 F)

Coldest night (TNn)

Coldest night (TNn) at Duchesne by year The coldest night of the year at Duchesne, 1906 to 2026. The record is -41.7 C (-43.1 F) in 1937, marked on the chart; the median year is -26.1 C (-15.0 F). -50-40-30-20-10192019401960198020002020Record: -41.7 C (-43.1 F) in 1937
The coldest night of the year at Duchesne, 1906 to 2026. The record is -41.7 C (-43.1 F) in 1937, marked on the chart; the median year is -26.1 C (-15.0 F).
Coldest night (TNn) at Duchesne by year
YearColdest night (TNn)
1906-23.3 C (-9.9 F)
1907-23.3 C (-9.9 F)
1908-33.9 C (-29.0 F)
1909-36.7 C (-34.1 F)
1910-32.8 C (-27.0 F)
1911-27.8 C (-18.0 F)
1912-29.4 C (-20.9 F)
1913-31.7 C (-25.1 F)
1914-29.4 C (-20.9 F)
1915-26.1 C (-15.0 F)
1916-35.6 C (-32.1 F)
1917-31.7 C (-25.1 F)
1918-31.1 C (-24.0 F)
1919-39.4 C (-38.9 F)
1920-31.7 C (-25.1 F)
1921-23.9 C (-11.0 F)
1922-33.9 C (-29.0 F)
1923-30.0 C (-22.0 F)
1924-37.8 C (-36.0 F)
1925-28.3 C (-18.9 F)
1926-28.9 C (-20.0 F)
1927-23.3 C (-9.9 F)
1928-25.0 C (-13.0 F)
1929-31.7 C (-25.1 F)
1930-36.7 C (-34.1 F)
1931-32.2 C (-26.0 F)
1932-38.9 C (-38.0 F)
1933-40.0 C (-40.0 F)
1934-18.9 C (-2.0 F)
1935-27.2 C (-17.0 F)
1936-26.7 C (-16.1 F)
1937-41.7 C (-43.1 F)
1938-23.3 C (-9.9 F)
1939-26.7 C (-16.1 F)
1940-29.4 C (-20.9 F)
1941-27.2 C (-17.0 F)
1942-30.0 C (-22.0 F)
1943-21.1 C (-6.0 F)
1944-29.4 C (-20.9 F)
1945-25.6 C (-14.1 F)
1946-22.2 C (-8.0 F)
1947-25.0 C (-13.0 F)
1948-29.4 C (-20.9 F)
1949-36.7 C (-34.1 F)
1950-31.7 C (-25.1 F)
1951-27.8 C (-18.0 F)
1952-37.8 C (-36.0 F)
1953-20.0 C (-4.0 F)
1954-25.6 C (-14.1 F)
1955-31.7 C (-25.1 F)
1956-26.1 C (-15.0 F)
1957-30.0 C (-22.0 F)
1958-19.4 C (-2.9 F)
1959-20.6 C (-5.1 F)
1960-26.1 C (-15.0 F)
1961-26.7 C (-16.1 F)
1962-33.3 C (-27.9 F)
1963-32.2 C (-26.0 F)
1964-23.3 C (-9.9 F)
1965-22.2 C (-8.0 F)
1966-27.8 C (-18.0 F)
1967-26.1 C (-15.0 F)
1968-27.8 C (-18.0 F)
1969-23.9 C (-11.0 F)
1970-26.1 C (-15.0 F)
1971-33.9 C (-29.0 F)
1972-27.2 C (-17.0 F)
1973-28.3 C (-18.9 F)
1980-13.3 C (8.1 F)
1981-18.3 C (-0.9 F)
1982-28.9 C (-20.0 F)
1983-23.3 C (-9.9 F)
1984-34.4 C (-29.9 F)
1985-31.7 C (-25.1 F)
1986-20.6 C (-5.1 F)
1987-27.2 C (-17.0 F)
1988-28.9 C (-20.0 F)
1989-38.9 C (-38.0 F)
1990-34.4 C (-29.9 F)
1991-24.4 C (-11.9 F)
1992-26.1 C (-15.0 F)
1993-25.0 C (-13.0 F)
1994-20.0 C (-4.0 F)
1995-16.7 C (1.9 F)
1996-22.2 C (-8.0 F)
1997-26.1 C (-15.0 F)
1998-30.6 C (-23.1 F)
1999-13.9 C (7.0 F)
2000-16.7 C (1.9 F)
2001-21.7 C (-7.1 F)
2002-23.3 C (-9.9 F)
2003-22.2 C (-8.0 F)
2004-24.4 C (-11.9 F)
2005-21.7 C (-7.1 F)
2006-18.3 C (-0.9 F)
2007-31.7 C (-25.1 F)
2008-25.0 C (-13.0 F)
2009-25.6 C (-14.1 F)
2010-25.6 C (-14.1 F)
2011-30.0 C (-22.0 F)
2012-23.9 C (-11.0 F)
2013-28.9 C (-20.0 F)
2014-25.0 C (-13.0 F)
2015-25.0 C (-13.0 F)
2016-20.0 C (-4.0 F)
2017-22.2 C (-8.0 F)
2018-15.0 C (5.0 F)
2019-20.0 C (-4.0 F)
2020-16.1 C (3.0 F)
2021-17.2 C (1.0 F)
2022-19.4 C (-2.9 F)
2023-21.1 C (-6.0 F)
2024-18.9 C (-2.0 F)
2025-20.6 C (-5.1 F)
2026-17.8 C (0.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Duchesne by year The wettest day of the year at Duchesne, 1906 to 2026. The record is 50.8 mm (2.0 in) in 1937, marked on the chart; the median year is 21.3 mm (0.8 in). 0204060192019401960198020002020Record: 50.8 mm (2.0 in) in 1937
The wettest day of the year at Duchesne, 1906 to 2026. The record is 50.8 mm (2.0 in) in 1937, marked on the chart; the median year is 21.3 mm (0.8 in).
Wettest day (Rx1day) at Duchesne by year
YearWettest day (Rx1day)
190622.9 mm (0.9 in)
190714.0 mm (0.6 in)
190817.8 mm (0.7 in)
190942.9 mm (1.7 in)
191015.2 mm (0.6 in)
191112.7 mm (0.5 in)
191225.4 mm (1.0 in)
191316.5 mm (0.6 in)
191411.4 mm (0.4 in)
191522.1 mm (0.9 in)
191622.9 mm (0.9 in)
191718.8 mm (0.7 in)
191822.9 mm (0.9 in)
191918.0 mm (0.7 in)
192027.4 mm (1.1 in)
192121.6 mm (0.9 in)
192223.1 mm (0.9 in)
192322.6 mm (0.9 in)
192429.5 mm (1.2 in)
192525.4 mm (1.0 in)
192615.2 mm (0.6 in)
192731.2 mm (1.2 in)
192841.9 mm (1.6 in)
192930.5 mm (1.2 in)
193021.6 mm (0.9 in)
193120.3 mm (0.8 in)
193218.8 mm (0.7 in)
193311.4 mm (0.4 in)
193429.2 mm (1.1 in)
193512.7 mm (0.5 in)
193624.9 mm (1.0 in)
193750.8 mm (2.0 in)
193824.9 mm (1.0 in)
193924.4 mm (1.0 in)
194026.9 mm (1.1 in)
194132.5 mm (1.3 in)
19429.7 mm (0.38 in)
194327.7 mm (1.1 in)
194419.6 mm (0.8 in)
194513.5 mm (0.5 in)
194615.5 mm (0.6 in)
194718.8 mm (0.7 in)
194818.8 mm (0.7 in)
194917.3 mm (0.7 in)
195014.7 mm (0.6 in)
195142.4 mm (1.7 in)
195225.4 mm (1.0 in)
195313.7 mm (0.5 in)
195425.4 mm (1.0 in)
195524.4 mm (1.0 in)
195614.2 mm (0.6 in)
195733.0 mm (1.3 in)
195816.5 mm (0.6 in)
195915.7 mm (0.6 in)
196031.2 mm (1.2 in)
196123.6 mm (0.9 in)
196222.1 mm (0.9 in)
196311.7 mm (0.5 in)
196415.2 mm (0.6 in)
196519.1 mm (0.8 in)
196617.3 mm (0.7 in)
196721.1 mm (0.8 in)
196820.6 mm (0.8 in)
196921.6 mm (0.9 in)
197019.1 mm (0.8 in)
197117.8 mm (0.7 in)
197216.8 mm (0.7 in)
197317.0 mm (0.7 in)
19808.6 mm (0.34 in)
198125.4 mm (1.0 in)
198217.0 mm (0.7 in)
198318.3 mm (0.7 in)
198416.5 mm (0.6 in)
198527.4 mm (1.1 in)
198630.0 mm (1.2 in)
198717.8 mm (0.7 in)
198825.9 mm (1.0 in)
198919.6 mm (0.8 in)
199015.2 mm (0.6 in)
199132.8 mm (1.3 in)
199221.3 mm (0.8 in)
199319.3 mm (0.8 in)
199424.1 mm (0.9 in)
199543.9 mm (1.7 in)
199617.8 mm (0.7 in)
199723.4 mm (0.9 in)
199831.2 mm (1.2 in)
199940.6 mm (1.6 in)
200019.8 mm (0.8 in)
200114.7 mm (0.6 in)
200215.2 mm (0.6 in)
200325.4 mm (1.0 in)
200419.8 mm (0.8 in)
200518.8 mm (0.7 in)
200638.4 mm (1.5 in)
200715.5 mm (0.6 in)
200822.4 mm (0.9 in)
200919.1 mm (0.8 in)
201032.8 mm (1.3 in)
201128.4 mm (1.1 in)
201229.0 mm (1.1 in)
201333.0 mm (1.3 in)
201436.6 mm (1.4 in)
201520.8 mm (0.8 in)
201641.7 mm (1.6 in)
201716.5 mm (0.6 in)
201826.2 mm (1.0 in)
201925.7 mm (1.0 in)
202023.6 mm (0.9 in)
202130.7 mm (1.2 in)
202214.0 mm (0.6 in)
202318.3 mm (0.7 in)
202411.2 mm (0.4 in)
202521.1 mm (0.8 in)
202630.5 mm (1.2 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Duchesne by year The wettest five days of the year at Duchesne, 1906 to 2026. The record is 76.2 mm (3.0 in) in 1927, marked on the chart; the median year is 32.8 mm (1.3 in). 020406080192019401960198020002020Record: 76.2 mm (3.0 in) in 1927
The wettest five days of the year at Duchesne, 1906 to 2026. The record is 76.2 mm (3.0 in) in 1927, marked on the chart; the median year is 32.8 mm (1.3 in).
Wettest five days (Rx5day) at Duchesne by year
YearWettest five days (Rx5day)
190635.6 mm (1.4 in)
190736.6 mm (1.4 in)
190820.3 mm (0.8 in)
190973.9 mm (2.9 in)
191032.8 mm (1.3 in)
191135.3 mm (1.4 in)
191236.8 mm (1.4 in)
191320.3 mm (0.8 in)
191426.2 mm (1.0 in)
191527.5 mm (1.1 in)
191646.6 mm (1.8 in)
191730.7 mm (1.2 in)
191831.0 mm (1.2 in)
191928.2 mm (1.1 in)
192029.2 mm (1.1 in)
192136.4 mm (1.4 in)
192226.7 mm (1.1 in)
192323.4 mm (0.9 in)
192430.8 mm (1.2 in)
192536.3 mm (1.4 in)
192632.5 mm (1.3 in)
192776.2 mm (3.0 in)
192852.8 mm (2.1 in)
192933.8 mm (1.3 in)
193026.0 mm (1.0 in)
193131.8 mm (1.3 in)
193224.3 mm (1.0 in)
193318.2 mm (0.7 in)
193444.5 mm (1.8 in)
193529.7 mm (1.2 in)
193635.6 mm (1.4 in)
193773.7 mm (2.9 in)
193833.5 mm (1.3 in)
193949.0 mm (1.9 in)
194041.2 mm (1.6 in)
194142.4 mm (1.7 in)
194216.0 mm (0.6 in)
194329.7 mm (1.2 in)
194437.4 mm (1.5 in)
194534.5 mm (1.4 in)
194627.7 mm (1.1 in)
194724.2 mm (1.0 in)
194821.6 mm (0.9 in)
194946.0 mm (1.8 in)
195020.6 mm (0.8 in)
195157.4 mm (2.3 in)
195257.4 mm (2.3 in)
195322.9 mm (0.9 in)
195444.9 mm (1.8 in)
195527.3 mm (1.1 in)
195620.9 mm (0.8 in)
195755.8 mm (2.2 in)
195823.2 mm (0.9 in)
195918.5 mm (0.7 in)
196039.8 mm (1.6 in)
196135.0 mm (1.4 in)
196228.8 mm (1.1 in)
196314.0 mm (0.6 in)
196433.7 mm (1.3 in)
196551.0 mm (2.0 in)
196645.7 mm (1.8 in)
196735.6 mm (1.4 in)
196822.6 mm (0.9 in)
196928.2 mm (1.1 in)
197040.8 mm (1.6 in)
197137.6 mm (1.5 in)
197227.5 mm (1.1 in)
197321.2 mm (0.8 in)
19808.6 mm (0.34 in)
198145.9 mm (1.8 in)
198247.6 mm (1.9 in)
198346.2 mm (1.8 in)
198424.1 mm (0.9 in)
198537.1 mm (1.5 in)
198630.3 mm (1.2 in)
198740.7 mm (1.6 in)
198833.0 mm (1.3 in)
198930.0 mm (1.2 in)
199025.3 mm (1.0 in)
199152.2 mm (2.1 in)
199231.5 mm (1.2 in)
199332.5 mm (1.3 in)
199452.3 mm (2.1 in)
199545.2 mm (1.8 in)
199627.2 mm (1.1 in)
199744.2 mm (1.7 in)
199839.4 mm (1.6 in)
199956.8 mm (2.2 in)
200025.4 mm (1.0 in)
200123.3 mm (0.9 in)
200233.0 mm (1.3 in)
200328.2 mm (1.1 in)
200444.3 mm (1.7 in)
200521.9 mm (0.9 in)
200645.4 mm (1.8 in)
200720.1 mm (0.8 in)
200826.2 mm (1.0 in)
200922.9 mm (0.9 in)
201054.4 mm (2.1 in)
201121.1 mm (0.8 in)
201233.4 mm (1.3 in)
201352.8 mm (2.1 in)
201448.8 mm (1.9 in)
201530.8 mm (1.2 in)
201649.3 mm (1.9 in)
201721.8 mm (0.9 in)
201853.7 mm (2.1 in)
201952.1 mm (2.1 in)
202034.1 mm (1.3 in)
202140.1 mm (1.6 in)
202224.2 mm (1.0 in)
202318.3 mm (0.7 in)
202424.4 mm (1.0 in)
202527.2 mm (1.1 in)
202623.9 mm (0.9 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Duchesne by year The longest dry spell of the year at Duchesne, 1906 to 2026. The record is 93 days in 1910, marked on the chart; the median year is 40 days. 020406080100192019401960198020002020Record: 93 days in 1910
The longest dry spell of the year at Duchesne, 1906 to 2026. The record is 93 days in 1910, marked on the chart; the median year is 40 days.
Longest dry spell (CDD) at Duchesne by year
YearLongest dry spell (CDD)
190631 days
190730 days
190835 days
190940 days
191093 days
191174 days
191248 days
191374 days
191457 days
191550 days
191675 days
191743 days
191834 days
191947 days
192055 days
192156 days
192239 days
192328 days
192466 days
192577 days
192682 days
192793 days
192848 days
192969 days
193044 days
193148 days
193248 days
193344 days
193438 days
193561 days
193638 days
193752 days
193846 days
193980 days
194032 days
194125 days
194266 days
194330 days
194437 days
194545 days
194658 days
194732 days
194826 days
194928 days
195053 days
195140 days
195265 days
195331 days
195435 days
195537 days
195654 days
195740 days
195867 days
195942 days
196040 days
196164 days
196241 days
196331 days
196441 days
196531 days
196636 days
196725 days
196846 days
196939 days
197044 days
197151 days
197240 days
197322 days
198015 days
198131 days
198226 days
198318 days
198438 days
198529 days
198629 days
198749 days
198833 days
198966 days
199036 days
199143 days
199233 days
199332 days
199437 days
199541 days
199623 days
199729 days
199840 days
199979 days
200036 days
200138 days
200248 days
200350 days
200433 days
200529 days
200632 days
200774 days
200840 days
200930 days
201034 days
201119 days
201289 days
201340 days
201439 days
201543 days
201631 days
201761 days
201839 days
201940 days
202078 days
202136 days
202253 days
202344 days
202436 days
202534 days
202641 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

104 years with a frost

Across 104 years with a frost, the median last spring frost at Duchesne falls on 20 May and the median first autumn frost on 24 September, which leaves a median of 128 days between them.

In 1995 to 2024 the median growing season was 147 days. That is 41 days more than in 1907 to 1937.

Fitted over all years, the growing season changes by +4.2 days per decade at this station.

Frost dates and growing season at Duchesne
MeasureMedian, all yearsEarliest period (1907 to 1937)Recent period (1995 to 2024)Recent against earliestFitted trend
Last spring frost20 May2 June11 May22 days earlier-2.3 days per decade
First autumn frost24 September15 September5 October20 days later+2.0 days per decade
Growing days128 days106 days147 days41 days more+4.2 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, 1907 to 2025

A day with at least 21.3 mm (0.8 in) of rain is expected about once in 2 years. A day with at least 50.5 mm (2.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Duchesne: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years21.3 mm (0.8 in)
5 years28.5 mm (1.1 in)
10 years33.6 mm (1.3 in)
25 years40.2 mm (1.6 in)
50 years45.3 mm (1.8 in)
100 years50.5 mm (2.0 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 1907 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: 50.8 mm (2.0 in) in 1937; 43.9 mm (1.7 in) in 1995; 42.9 mm (1.7 in) in 1909.

Station Changes

3 suspected

3 changes were suspected in the annual mean temperature of Duchesne, at 1989, 2002 and 2015. Each is measured against neighbouring stations.

  • Relative to 5 neighbouring stations, the station's annual mean temperature from 1989 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 2002 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 2015 ran 0.9 C (1.5 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Duchesne, against neighbouring stations
YearShift (C)Shift (F)StrengthNeighbours
1989-0.3-0.5likely5
2002-0.2-0.4possible5
2015+0.9+1.5likely5

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 2024 against 1961 to 1990

Over 2010 to 2024, Duchesne had a mean temperature of 8.9 C (48.0 F) and 200.7 mm (7.9 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Ferron (United States, 136 km away), Castle Dale (United States, 119 km away) and Montrose #2 (United States, 286 km away).

Climate twins of Duchesne: stations whose 1961 to 1990 climate is closest to its 2010 to 2024 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
FerronUnited States136 km (85 mi)8.9 C (47.9 F)216.8 mm (8.5 in)0.61
Castle DaleUnited States119 km (74 mi)8.5 C (47.3 F)190.2 mm (7.5 in)0.64
Montrose #2United States286 km (178 mi)9.4 C (48.9 F)246.5 mm (9.7 in)0.94

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 Duchesne standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Duchesne 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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-13).