Dillon U of Montana Western Weather Records (USC00242409)
Record envelope, standing records and threshold days for Dillon U of Montana Western (USC00242409), Montana, United States, with 132 years of record.
Key Facts for Dillon U of Montana Western
- Dillon U of Montana Western (USC00242409) is a weather station in Montana, United States at 45.21 latitude and -112.64 longitude, 1,563 m (5,129 ft) above sea level.
- The station reports from 1895 to 2026, 132 years of record.
- 1,464 records set at Dillon U of Montana Western still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Dillon U of Montana Western set a daily record snowfall of 22.9 cm (9.0 in) on 12 October 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Montana, United States, 45.21 latitude, -112.64 longitude.
- Elevation: 1,563 m (5,129 ft).
- Period of record: 1895 to 2026, 132 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
12 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 15.6 C (60.1 F) | -40.0 C (-40.0 F) | 13.3 C (55.9 F) | -18.3 C (-0.9 F) |
| Feb | 18.3 C (64.9 F) | -40.0 C (-40.0 F) | 15.6 C (60.1 F) | -19.4 C (-2.9 F) |
| Mar | 23.9 C (75.0 F) | -32.2 C (-26.0 F) | 23.9 C (75.0 F) | -12.2 C (10.0 F) |
| Apr | 28.9 C (84.0 F) | -19.4 C (-2.9 F) | 23.9 C (75.0 F) | -7.8 C (18.0 F) |
| May | 32.8 C (91.0 F) | -9.4 C (15.1 F) | 29.4 C (84.9 F) | -4.4 C (24.1 F) |
| Jun | 36.7 C (98.1 F) | -5.0 C (23.0 F) | 28.9 C (84.0 F) | 1.7 C (35.1 F) |
| Jul | 38.9 C (102.0 F) | -1.1 C (30.0 F) | 36.1 C (97.0 F) | 7.8 C (46.0 F) |
| Aug | 37.8 C (100.0 F) | -3.9 C (25.0 F) | 35.6 C (96.1 F) | 3.9 C (39.0 F) |
| Sep | 34.4 C (93.9 F) | -12.8 C (9.0 F) | 26.7 C (80.1 F) | -0.6 C (30.9 F) |
| Oct | 30.0 C (86.0 F) | -25.0 C (-13.0 F) | 27.8 C (82.0 F) | -8.3 C (17.1 F) |
| Nov | 26.1 C (79.0 F) | -35.0 C (-31.0 F) | n/a | n/a |
| Dec | 18.3 C (64.9 F) | -38.3 C (-36.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1895 | 6 |
| 1896 | 21 |
| 1900 | 15 |
| 1901 | 16 |
| 1902 | 16 |
| 1903 | 10 |
| 1904 | 17 |
| 1905 | 11 |
| 1906 | 24 |
| 1907 | 6 |
| 1908 | 11 |
| 1909 | 15 |
| 1910 | 15 |
| 1911 | 16 |
| 1912 | 6 |
| 1913 | 9 |
| 1914 | 1 |
| 1915 | 11 |
| 1916 | 11 |
| 1917 | 3 |
| 1918 | 18 |
| 1919 | 20 |
| 1920 | 9 |
| 1921 | 8 |
| 1922 | 7 |
| 1923 | 2 |
| 1924 | 13 |
| 1925 | 1 |
| 1926 | 4 |
| 1927 | 8 |
| 1928 | 9 |
| 1929 | 14 |
| 1930 | 19 |
| 1931 | 17 |
| 1932 | 21 |
| 1933 | 20 |
| 1934 | 20 |
| 1935 | 7 |
| 1936 | 21 |
| 1937 | 15 |
| 1938 | 11 |
| 1939 | 15 |
| 1940 | 5 |
| 1941 | 14 |
| 1942 | 14 |
| 1943 | 7 |
| 1944 | 5 |
| 1945 | 8 |
| 1946 | 10 |
| 1947 | 8 |
| 1948 | 7 |
| 1949 | 23 |
| 1950 | 25 |
| 1951 | 17 |
| 1952 | 8 |
| 1953 | 17 |
| 1954 | 17 |
| 1955 | 21 |
| 1956 | 6 |
| 1957 | 6 |
| 1958 | 7 |
| 1959 | 12 |
| 1960 | 11 |
| 1961 | 13 |
| 1962 | 11 |
| 1963 | 11 |
| 1964 | 7 |
| 1965 | 24 |
| 1966 | 11 |
| 1967 | 10 |
| 1968 | 13 |
| 1969 | 21 |
| 1970 | 8 |
| 1971 | 9 |
| 1972 | 18 |
| 1973 | 10 |
| 1974 | 11 |
| 1975 | 15 |
| 1976 | 3 |
| 1977 | 9 |
| 1978 | 10 |
| 1979 | 8 |
| 1980 | 12 |
| 1981 | 12 |
| 1982 | 9 |
| 1983 | 14 |
| 1984 | 6 |
| 1985 | 22 |
| 1986 | 19 |
| 1987 | 10 |
| 1988 | 15 |
| 1989 | 17 |
| 1990 | 12 |
| 1991 | 5 |
| 1992 | 14 |
| 1993 | 9 |
| 1994 | 8 |
| 1995 | 8 |
| 1996 | 18 |
| 1997 | 6 |
| 1998 | 6 |
| 1999 | 8 |
| 2000 | 7 |
| 2001 | 5 |
| 2002 | 17 |
| 2003 | 16 |
| 2004 | 6 |
| 2005 | 3 |
| 2006 | 7 |
| 2007 | 8 |
| 2008 | 11 |
| 2009 | 7 |
| 2010 | 5 |
| 2011 | 6 |
| 2012 | 11 |
| 2013 | 4 |
| 2014 | 9 |
| 2015 | 12 |
| 2016 | 3 |
| 2017 | 6 |
| 2018 | 8 |
| 2019 | 15 |
| 2020 | 11 |
| 2021 | 17 |
| 2022 | 14 |
| 2023 | 5 |
| 2024 | 9 |
| 2025 | 9 |
| 2026 | 14 |
All-Time Record Progression
5 new records| Date | Kind | Detail |
|---|---|---|
| 1931-07-26 | Record high maximum temperature | Record high maximum temperature 36.7 C (98.1 F) |
| 1931-11-26 | Record daily snowfall | Record daily snowfall 40.6 cm (16.0 in) |
| 1933-02-09 | Record low minimum temperature | Record low minimum temperature -40.0 C (-40.0 F) |
| 1940-08-12 | Record high maximum temperature | Record high maximum temperature 37.8 C (100.0 F) |
| 2002-07-12 | Record high maximum temperature | Record high maximum temperature 38.9 C (102.0 F) |
Wettest Day of Each Month
Sep: 61.0 mm (2.4 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 27.9 mm (1.1 in) | 9 January 1909 |
| Feb | 33.0 mm (1.3 in) | 5 February 2019 |
| Mar | 38.1 mm (1.5 in) | 5 March 2026 |
| Apr | 50.8 mm (2.0 in) | 18 April 2023 |
| May | 53.3 mm (2.1 in) | 23 May 2021 |
| Jun | 50.8 mm (2.0 in) | 27 June 2026 |
| Jul | 38.6 mm (1.5 in) | 22 July 2008 |
| Aug | 33.3 mm (1.3 in) | 26 August 1905 |
| Sep | 61.0 mm (2.4 in) | 3 September 1901 |
| Oct | 44.5 mm (1.8 in) | 17 October 2024 |
| Nov | 38.4 mm (1.5 in) | 5 November 1918 |
| Dec | 25.4 mm (1.0 in) | 5 December 2025 |
Period of Record Coverage
1895 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1895 | 195 | 53% | No |
| 1896 | 241 | 66% | No |
| 1900 | 361 | 99% | Yes |
| 1901 | 361 | 99% | Yes |
| 1902 | 363 | 99% | Yes |
| 1903 | 362 | 99% | Yes |
| 1904 | 364 | 99% | Yes |
| 1905 | 364 | 100% | Yes |
| 1906 | 364 | 100% | Yes |
| 1907 | 365 | 100% | Yes |
| 1908 | 365 | 100% | Yes |
| 1909 | 364 | 100% | Yes |
| 1910 | 363 | 99% | Yes |
| 1911 | 361 | 99% | Yes |
| 1912 | 364 | 99% | Yes |
| 1913 | 363 | 99% | Yes |
| 1914 | 365 | 100% | Yes |
| 1915 | 362 | 99% | Yes |
| 1916 | 362 | 99% | Yes |
| 1917 | 365 | 100% | Yes |
| 1918 | 362 | 99% | Yes |
| 1919 | 362 | 99% | Yes |
| 1920 | 364 | 99% | Yes |
| 1921 | 365 | 100% | Yes |
| 1922 | 362 | 99% | Yes |
| 1923 | 361 | 99% | Yes |
| 1924 | 364 | 99% | Yes |
| 1925 | 364 | 100% | Yes |
| 1926 | 362 | 99% | Yes |
| 1927 | 364 | 100% | Yes |
| 1928 | 362 | 99% | Yes |
| 1929 | 362 | 99% | Yes |
| 1930 | 361 | 99% | Yes |
| 1931 | 364 | 100% | Yes |
| 1932 | 364 | 99% | Yes |
| 1933 | 362 | 99% | Yes |
| 1934 | 361 | 99% | Yes |
| 1935 | 364 | 100% | Yes |
| 1936 | 270 | 74% | No |
| 1937 | 348 | 95% | Yes |
| 1938 | 360 | 99% | Yes |
| 1939 | 365 | 100% | Yes |
| 1940 | 363 | 99% | Yes |
| 1941 | 365 | 100% | Yes |
| 1942 | 363 | 99% | Yes |
| 1943 | 365 | 100% | Yes |
| 1944 | 365 | 100% | Yes |
| 1945 | 362 | 99% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 365 | 100% | Yes |
| 1948 | 366 | 100% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 363 | 99% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 363 | 99% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 363 | 99% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 362 | 99% | Yes |
| 1960 | 364 | 99% | Yes |
| 1961 | 362 | 99% | Yes |
| 1962 | 363 | 99% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 363 | 99% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 364 | 100% | Yes |
| 1967 | 364 | 100% | Yes |
| 1968 | 365 | 100% | Yes |
| 1969 | 363 | 99% | Yes |
| 1970 | 343 | 94% | Yes |
| 1971 | 288 | 79% | No |
| 1972 | 365 | 100% | Yes |
| 1973 | 361 | 99% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 363 | 99% | Yes |
| 1976 | 346 | 95% | Yes |
| 1977 | 364 | 100% | Yes |
| 1978 | 363 | 99% | Yes |
| 1979 | 364 | 100% | Yes |
| 1980 | 364 | 99% | Yes |
| 1981 | 359 | 98% | Yes |
| 1982 | 363 | 99% | Yes |
| 1983 | 361 | 99% | Yes |
| 1984 | 360 | 98% | Yes |
| 1985 | 362 | 99% | Yes |
| 1986 | 355 | 97% | Yes |
| 1987 | 349 | 96% | Yes |
| 1988 | 326 | 89% | No |
| 1989 | 345 | 95% | Yes |
| 1990 | 324 | 89% | No |
| 1991 | 337 | 92% | Yes |
| 1992 | 347 | 95% | Yes |
| 1993 | 338 | 93% | Yes |
| 1994 | 321 | 88% | No |
| 1995 | 318 | 87% | No |
| 1996 | 325 | 89% | No |
| 1997 | 311 | 85% | No |
| 1998 | 326 | 89% | No |
| 1999 | 310 | 85% | No |
| 2000 | 288 | 79% | No |
| 2001 | 305 | 84% | No |
| 2002 | 296 | 81% | No |
| 2003 | 305 | 84% | No |
| 2004 | 325 | 89% | No |
| 2005 | 326 | 89% | No |
| 2006 | 308 | 84% | No |
| 2007 | 315 | 86% | No |
| 2008 | 311 | 85% | No |
| 2009 | 316 | 87% | No |
| 2010 | 361 | 99% | Yes |
| 2011 | 362 | 99% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 364 | 100% | Yes |
| 2014 | 365 | 100% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 361 | 99% | Yes |
| 2019 | 333 | 91% | Yes |
| 2020 | 361 | 99% | Yes |
| 2021 | 345 | 95% | Yes |
| 2022 | 344 | 94% | Yes |
| 2023 | 350 | 96% | Yes |
| 2024 | 361 | 99% | Yes |
| 2025 | 364 | 100% | Yes |
| 2026 | 260 | 71% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 12 October 2026 | Dillon U of Montana Western, US | daily snowfall (Provisional) | 22.9 cm (9.0 in) | 22.9 cm (9.0 in) | 130 years | 76 of 100 (Major) |
| 20 September 2026 | Dillon U of Montana Western, US | daily high min (Tie, Provisional) | 10.6 C (51.1 F) | tie | 16 years | 3 of 100 (Routine) |
| 18 September 2026 | Dillon U of Montana Western, US | daily high min (Provisional) | 12.2 C (54.0 F) | 0.5 C (0.9 F) | 57 years | 28 of 100 (Routine) |
| 16 September 2026 | Dillon U of Montana Western, US | daily high min (Provisional) | 14.4 C (57.9 F) | 2.2 C (4.0 F) | 64 years | 34 of 100 (Routine) |
| 12 August 2026 | Dillon U of Montana Western, US | monthly high min (Tie) | 20.0 C (68.0 F) | tie | 125 years | 12 of 100 (Routine) |
| 10 August 2026 | Dillon U of Montana Western, US | daily high min | 19.4 C (66.9 F) | 3.8 C (6.8 F) | 97 years | 50 of 100 (Notable) |
| 17 July 2026 | Dillon U of Montana Western, US | daily high min (Tie) | 16.1 C (61.0 F) | tie | 93 years | 9 of 100 (Routine) |
| 8 July 2026 | Dillon U of Montana Western, US | daily high min | 17.8 C (64.0 F) | 1.7 C (3.1 F) | 92 years | 42 of 100 (Notable) |
| 29 June 2026 | Dillon U of Montana Western, US | daily low max | 14.4 C (57.9 F) | 1.2 C (2.2 F) | 123 years | 42 of 100 (Notable) |
| 28 June 2026 | Dillon U of Montana Western, US | daily low max | 7.2 C (45.0 F) | 7.2 C (13.0 F) | 72 years | 45 of 100 (Notable) |
| 27 June 2026 | Dillon U of Montana Western, US | monthly rain | 50.8 mm (2.0 in) | 7.6 mm (0.30 in) | 68 years | 51 of 100 (Notable) |
| 13 May 2026 | Dillon U of Montana Western, US | daily high max (Tie) | 29.4 C (84.9 F) | tie | 32 years | 4 of 100 (Routine) |
| 12 May 2026 | Dillon U of Montana Western, US | daily high max (Tie) | 29.4 C (84.9 F) | tie | 37 years | 5 of 100 (Routine) |
| 26 April 2026 | Dillon U of Montana Western, US | daily low min (Tie) | -7.8 C (18.0 F) | tie | 77 years | 8 of 100 (Routine) |
| 23 April 2026 | Dillon U of Montana Western, US | daily snow depth | 2.5 cm (1.0 in) | 2.5 cm (1.0 in) | 125 years | 20 of 100 (Routine) |
| 22 April 2026 | Dillon U of Montana Western, US | daily snow depth (Tie) | 2.5 cm (1.0 in) | tie | 3 years | 2 of 100 (Routine) |
| 24 March 2026 | Dillon U of Montana Western, US | daily high min | 6.7 C (44.1 F) | 1.7 C (3.1 F) | 0 years | 12 of 100 (Routine) |
| 21 March 2026 | Dillon U of Montana Western, US | daily high max (Tie) | 20.6 C (69.1 F) | tie | 115 years | 10 of 100 (Routine) |
| 20 March 2026 | Dillon U of Montana Western, US | monthly high max | 23.9 C (75.0 F) | 0.6 C (1.1 F) | 116 years | 51 of 100 (Notable) |
| 20 March 2026 | Dillon U of Montana Western, US | daily high min (Tie) | 2.8 C (37.0 F) | tie | 64 years | 7 of 100 (Routine) |
Climate Trend
118 complete years, 1900 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1900 | 7.3 C | +0.69 C |
| 1901 | 7.7 C | +1.04 C |
| 1902 | 5.5 C | -1.10 C |
| 1903 | 5.5 C | -1.10 C |
| 1904 | 6.7 C | +0.01 C |
| 1905 | 6.0 C | -0.60 C |
| 1906 | 7.1 C | +0.48 C |
| 1907 | 6.6 C | -0.08 C |
| 1908 | 6.7 C | +0.01 C |
| 1909 | 7.1 C | +0.42 C |
| 1910 | 7.7 C | +1.02 C |
| 1911 | 6.8 C | +0.20 C |
| 1912 | 6.7 C | +0.08 C |
| 1913 | 5.2 C | -1.42 C |
| 1914 | 7.1 C | +0.44 C |
| 1915 | 6.5 C | -0.10 C |
| 1916 | 5.0 C | -1.68 C |
| 1917 | 6.8 C | +0.14 C |
| 1918 | 6.7 C | +0.09 C |
| 1919 | 6.3 C | -0.33 C |
| 1920 | 5.3 C | -1.36 C |
| 1921 | 6.8 C | +0.13 C |
| 1922 | 5.5 C | -1.14 C |
| 1923 | 6.0 C | -0.60 C |
| 1924 | 6.1 C | -0.54 C |
| 1925 | 7.9 C | +1.28 C |
| 1926 | 7.3 C | +0.61 C |
| 1927 | 6.9 C | +0.22 C |
| 1928 | 7.2 C | +0.55 C |
| 1929 | 6.6 C | -0.05 C |
| 1930 | 7.1 C | +0.43 C |
| 1931 | 8.7 C | +2.08 C |
| 1932 | 6.7 C | +0.10 C |
| 1933 | 8.0 C | +1.32 C |
| 1934 | 9.3 C | +2.70 C |
| 1935 | 5.4 C | -1.29 C |
| 1938 | 6.4 C | -0.27 C |
| 1939 | 7.1 C | +0.43 C |
| 1940 | 7.0 C | +0.33 C |
| 1941 | 6.6 C | -0.07 C |
| 1942 | 5.3 C | -1.31 C |
| 1943 | 6.1 C | -0.53 C |
| 1944 | 5.9 C | -0.76 C |
| 1945 | 6.2 C | -0.49 C |
| 1946 | 6.5 C | -0.11 C |
| 1947 | 6.6 C | -0.05 C |
| 1948 | 5.5 C | -1.11 C |
| 1949 | 5.8 C | -0.87 C |
| 1950 | 6.0 C | -0.69 C |
| 1951 | 4.9 C | -1.74 C |
| 1952 | 6.0 C | -0.60 C |
| 1953 | 7.5 C | +0.81 C |
| 1954 | 6.9 C | +0.25 C |
| 1955 | 4.8 C | -1.81 C |
| 1956 | 6.2 C | -0.47 C |
| 1957 | 6.0 C | -0.67 C |
| 1958 | 7.6 C | +0.97 C |
| 1959 | 6.2 C | -0.46 C |
| 1960 | 6.0 C | -0.60 C |
| 1961 | 7.2 C | +0.56 C |
| 1962 | 6.6 C | -0.05 C |
| 1963 | 6.8 C | +0.18 C |
| 1964 | 6.0 C | -0.64 C |
| 1965 | 6.4 C | -0.26 C |
| 1966 | 7.0 C | +0.36 C |
| 1967 | 6.7 C | +0.10 C |
| 1968 | 6.1 C | -0.56 C |
| 1969 | 6.2 C | -0.44 C |
| 1972 | 6.6 C | 0.00 C |
| 1973 | 6.5 C | -0.14 C |
| 1974 | 7.2 C | +0.58 C |
| 1975 | 5.7 C | -0.97 C |
| 1977 | 6.6 C | -0.09 C |
| 1978 | 6.0 C | -0.62 C |
| 1979 | 6.1 C | -0.57 C |
| 1980 | 7.0 C | +0.36 C |
| 1981 | 7.8 C | +1.15 C |
| 1982 | 5.6 C | -1.09 C |
| 1983 | 6.5 C | -0.17 C |
| 1984 | 6.3 C | -0.37 C |
| 1985 | 5.5 C | -1.14 C |
| 1986 | 7.4 C | +0.77 C |
| 1987 | 7.5 C | +0.89 C |
| 1988 | 7.7 C | +1.07 C |
| 1989 | 6.5 C | -0.16 C |
| 1990 | 7.2 C | +0.60 C |
| 1991 | 7.4 C | +0.73 C |
| 1992 | 7.8 C | +1.11 C |
| 1993 | 5.7 C | -0.94 C |
| 1994 | 7.4 C | +0.79 C |
| 1995 | 6.9 C | +0.22 C |
| 1996 | 6.7 C | +0.02 C |
| 1997 | 6.7 C | +0.09 C |
| 1998 | 7.4 C | +0.80 C |
| 1999 | 7.6 C | +1.00 C |
| 2000 | 6.4 C | -0.25 C |
| 2001 | 6.9 C | +0.28 C |
| 2002 | 5.9 C | -0.76 C |
| 2004 | 6.9 C | +0.29 C |
| 2005 | 6.8 C | +0.15 C |
| 2006 | 7.5 C | +0.84 C |
| 2007 | 7.5 C | +0.86 C |
| 2008 | 6.3 C | -0.31 C |
| 2009 | 6.4 C | -0.21 C |
| 2010 | 6.2 C | -0.43 C |
| 2011 | 6.3 C | -0.30 C |
| 2012 | 7.9 C | +1.22 C |
| 2013 | 6.9 C | +0.24 C |
| 2014 | 6.5 C | -0.19 C |
| 2015 | 7.6 C | +0.91 C |
| 2016 | 7.0 C | +0.32 C |
| 2017 | 6.3 C | -0.34 C |
| 2018 | 6.2 C | -0.46 C |
| 2020 | 6.7 C | +0.08 C |
| 2021 | 7.2 C | +0.54 C |
| 2023 | 6.4 C | -0.29 C |
| 2024 | 7.8 C | +1.12 C |
| 2025 | 7.4 C | +0.74 C |
The fitted trend in annual mean temperature here over 1900 to 2025 is 0.03 C (-0.01 to 0.07) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.05 F (-0.02 to 0.12) per decade. The slope is a straight line fitted to 118 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.03 C (-0.01 to 0.07) per decade | 0.05 F (-0.02 to 0.12) per decade | 1900 to 2025 | 118 | Not clearly different from zero |
| Mean daily maximum | 0.01 C (-0.04 to 0.06) per decade | 0.02 F (-0.06 to 0.10) per decade | 1900 to 2025 | 118 | Not clearly different from zero |
| Mean daily minimum | 0.05 C (0.00 to 0.10) per decade | 0.08 F (-0.01 to 0.18) per decade | 1900 to 2025 | 118 | Not 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
1895 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 38.9 C (102.0 F) | 2002 | 34.4 C (93.9 F) | 129 |
| Coldest night (TNn) | -40.0 C (-40.0 F) | 1933 | -30.0 C (-22.0 F) | 129 |
| Wettest day (Rx1day) | 61.0 mm (2.4 in) | 1901 | 27.2 mm (1.1 in) | 129 |
| Wettest five days (Rx5day) | 94.2 mm (3.7 in) | 1908 | 41.6 mm (1.6 in) | 129 |
| Longest dry spell (CDD) | 91 days | 1987 | 38 days | 129 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1895 | 23.9 C (75.0 F) |
| 1896 | 33.3 C (91.9 F) |
| 1900 | 34.4 C (93.9 F) |
| 1901 | 33.9 C (93.0 F) |
| 1902 | 31.1 C (88.0 F) |
| 1903 | 31.7 C (89.1 F) |
| 1904 | 32.2 C (90.0 F) |
| 1905 | 32.2 C (90.0 F) |
| 1906 | 31.7 C (89.1 F) |
| 1907 | 29.4 C (84.9 F) |
| 1908 | 32.8 C (91.0 F) |
| 1909 | 32.2 C (90.0 F) |
| 1910 | 34.4 C (93.9 F) |
| 1911 | 32.2 C (90.0 F) |
| 1912 | 32.2 C (90.0 F) |
| 1913 | 31.7 C (89.1 F) |
| 1914 | 31.7 C (89.1 F) |
| 1915 | 32.8 C (91.0 F) |
| 1916 | 31.7 C (89.1 F) |
| 1917 | 33.3 C (91.9 F) |
| 1918 | 32.2 C (90.0 F) |
| 1919 | 35.0 C (95.0 F) |
| 1920 | 31.7 C (89.1 F) |
| 1921 | 33.3 C (91.9 F) |
| 1922 | 32.2 C (90.0 F) |
| 1923 | 32.2 C (90.0 F) |
| 1924 | 33.9 C (93.0 F) |
| 1925 | 33.9 C (93.0 F) |
| 1926 | 33.3 C (91.9 F) |
| 1927 | 32.8 C (91.0 F) |
| 1928 | 32.8 C (91.0 F) |
| 1929 | 34.4 C (93.9 F) |
| 1930 | 35.0 C (95.0 F) |
| 1931 | 36.7 C (98.1 F) |
| 1932 | 34.4 C (93.9 F) |
| 1933 | 35.0 C (95.0 F) |
| 1934 | 36.7 C (98.1 F) |
| 1935 | 35.6 C (96.1 F) |
| 1936 | 34.4 C (93.9 F) |
| 1937 | 34.4 C (93.9 F) |
| 1938 | 32.2 C (90.0 F) |
| 1939 | 35.0 C (95.0 F) |
| 1940 | 37.8 C (100.0 F) |
| 1941 | 33.9 C (93.0 F) |
| 1942 | 34.4 C (93.9 F) |
| 1943 | 32.8 C (91.0 F) |
| 1944 | 31.7 C (89.1 F) |
| 1945 | 33.9 C (93.0 F) |
| 1946 | 33.9 C (93.0 F) |
| 1947 | 34.4 C (93.9 F) |
| 1948 | 32.8 C (91.0 F) |
| 1949 | 36.1 C (97.0 F) |
| 1950 | 33.9 C (93.0 F) |
| 1951 | 37.2 C (99.0 F) |
| 1952 | 35.0 C (95.0 F) |
| 1953 | 36.1 C (97.0 F) |
| 1954 | 36.1 C (97.0 F) |
| 1955 | 35.0 C (95.0 F) |
| 1956 | 35.0 C (95.0 F) |
| 1957 | 33.3 C (91.9 F) |
| 1958 | 34.4 C (93.9 F) |
| 1959 | 35.6 C (96.1 F) |
| 1960 | 36.1 C (97.0 F) |
| 1961 | 35.6 C (96.1 F) |
| 1962 | 31.7 C (89.1 F) |
| 1963 | 33.3 C (91.9 F) |
| 1964 | 33.9 C (93.0 F) |
| 1965 | 31.7 C (89.1 F) |
| 1966 | 35.0 C (95.0 F) |
| 1967 | 32.8 C (91.0 F) |
| 1968 | 33.3 C (91.9 F) |
| 1969 | 37.2 C (99.0 F) |
| 1970 | 34.4 C (93.9 F) |
| 1971 | 31.7 C (89.1 F) |
| 1972 | 33.9 C (93.0 F) |
| 1973 | 37.2 C (99.0 F) |
| 1974 | 34.4 C (93.9 F) |
| 1975 | 35.0 C (95.0 F) |
| 1976 | 33.9 C (93.0 F) |
| 1977 | 32.8 C (91.0 F) |
| 1978 | 33.9 C (93.0 F) |
| 1979 | 33.9 C (93.0 F) |
| 1980 | 34.4 C (93.9 F) |
| 1981 | 34.4 C (93.9 F) |
| 1982 | 36.1 C (97.0 F) |
| 1983 | 35.0 C (95.0 F) |
| 1984 | 33.3 C (91.9 F) |
| 1985 | 35.6 C (96.1 F) |
| 1986 | 33.9 C (93.0 F) |
| 1987 | 34.4 C (93.9 F) |
| 1988 | 36.1 C (97.0 F) |
| 1989 | 35.0 C (95.0 F) |
| 1990 | 35.0 C (95.0 F) |
| 1991 | 33.9 C (93.0 F) |
| 1992 | 34.4 C (93.9 F) |
| 1993 | 31.1 C (88.0 F) |
| 1994 | 34.4 C (93.9 F) |
| 1995 | 33.3 C (91.9 F) |
| 1996 | 34.4 C (93.9 F) |
| 1997 | 33.3 C (91.9 F) |
| 1998 | 36.7 C (98.1 F) |
| 1999 | 34.4 C (93.9 F) |
| 2000 | 34.4 C (93.9 F) |
| 2001 | 34.4 C (93.9 F) |
| 2002 | 38.9 C (102.0 F) |
| 2003 | 36.7 C (98.1 F) |
| 2004 | 32.8 C (91.0 F) |
| 2005 | 34.4 C (93.9 F) |
| 2006 | 35.6 C (96.1 F) |
| 2007 | 36.7 C (98.1 F) |
| 2008 | 34.4 C (93.9 F) |
| 2009 | 35.0 C (95.0 F) |
| 2010 | 33.9 C (93.0 F) |
| 2011 | 34.4 C (93.9 F) |
| 2012 | 35.0 C (95.0 F) |
| 2013 | 33.9 C (93.0 F) |
| 2014 | 34.4 C (93.9 F) |
| 2015 | 36.7 C (98.1 F) |
| 2016 | 33.9 C (93.0 F) |
| 2017 | 34.4 C (93.9 F) |
| 2018 | 37.2 C (99.0 F) |
| 2019 | 33.3 C (91.9 F) |
| 2020 | 36.1 C (97.0 F) |
| 2021 | 35.0 C (95.0 F) |
| 2022 | 32.8 C (91.0 F) |
| 2023 | 34.4 C (93.9 F) |
| 2024 | 35.6 C (96.1 F) |
| 2025 | 33.3 C (91.9 F) |
| 2026 | 36.1 C (97.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1895 | -32.2 C (-26.0 F) |
| 1896 | -32.2 C (-26.0 F) |
| 1900 | -34.4 C (-29.9 F) |
| 1901 | -26.1 C (-15.0 F) |
| 1902 | -36.1 C (-33.0 F) |
| 1903 | -27.8 C (-18.0 F) |
| 1904 | -27.8 C (-18.0 F) |
| 1905 | -35.0 C (-31.0 F) |
| 1906 | -28.9 C (-20.0 F) |
| 1907 | -35.0 C (-31.0 F) |
| 1908 | -31.1 C (-24.0 F) |
| 1909 | -30.0 C (-22.0 F) |
| 1910 | -30.0 C (-22.0 F) |
| 1911 | -29.4 C (-20.9 F) |
| 1912 | -27.2 C (-17.0 F) |
| 1913 | -28.9 C (-20.0 F) |
| 1914 | -33.9 C (-29.0 F) |
| 1915 | -27.8 C (-18.0 F) |
| 1916 | -35.0 C (-31.0 F) |
| 1917 | -27.2 C (-17.0 F) |
| 1918 | -30.0 C (-22.0 F) |
| 1919 | -35.6 C (-32.1 F) |
| 1920 | -31.7 C (-25.1 F) |
| 1921 | -26.1 C (-15.0 F) |
| 1922 | -32.2 C (-26.0 F) |
| 1923 | -30.6 C (-23.1 F) |
| 1924 | -36.1 C (-33.0 F) |
| 1925 | -16.7 C (1.9 F) |
| 1926 | -30.0 C (-22.0 F) |
| 1927 | -37.2 C (-35.0 F) |
| 1928 | -28.9 C (-20.0 F) |
| 1929 | -35.0 C (-31.0 F) |
| 1930 | -35.6 C (-32.1 F) |
| 1931 | -26.1 C (-15.0 F) |
| 1932 | -36.1 C (-33.0 F) |
| 1933 | -40.0 C (-40.0 F) |
| 1934 | -19.4 C (-2.9 F) |
| 1935 | -35.6 C (-32.1 F) |
| 1936 | -37.8 C (-36.0 F) |
| 1937 | -37.8 C (-36.0 F) |
| 1938 | -30.6 C (-23.1 F) |
| 1939 | -36.1 C (-33.0 F) |
| 1940 | -33.3 C (-27.9 F) |
| 1941 | -29.4 C (-20.9 F) |
| 1942 | -37.2 C (-35.0 F) |
| 1943 | -35.0 C (-31.0 F) |
| 1944 | -31.1 C (-24.0 F) |
| 1945 | -28.3 C (-18.9 F) |
| 1946 | -29.4 C (-20.9 F) |
| 1947 | -28.9 C (-20.0 F) |
| 1948 | -30.0 C (-22.0 F) |
| 1949 | -36.7 C (-34.1 F) |
| 1950 | -32.2 C (-26.0 F) |
| 1951 | -34.4 C (-29.9 F) |
| 1952 | -30.0 C (-22.0 F) |
| 1953 | -23.3 C (-9.9 F) |
| 1954 | -27.8 C (-18.0 F) |
| 1955 | -35.0 C (-31.0 F) |
| 1956 | -31.1 C (-24.0 F) |
| 1957 | -36.7 C (-34.1 F) |
| 1958 | -23.9 C (-11.0 F) |
| 1959 | -34.4 C (-29.9 F) |
| 1960 | -30.0 C (-22.0 F) |
| 1961 | -30.0 C (-22.0 F) |
| 1962 | -35.0 C (-31.0 F) |
| 1963 | -34.4 C (-29.9 F) |
| 1964 | -32.8 C (-27.0 F) |
| 1965 | -26.1 C (-15.0 F) |
| 1966 | -26.7 C (-16.1 F) |
| 1967 | -30.0 C (-22.0 F) |
| 1968 | -30.0 C (-22.0 F) |
| 1969 | -36.1 C (-33.0 F) |
| 1970 | -28.9 C (-20.0 F) |
| 1971 | -27.8 C (-18.0 F) |
| 1972 | -35.6 C (-32.1 F) |
| 1973 | -32.2 C (-26.0 F) |
| 1974 | -29.4 C (-20.9 F) |
| 1975 | -28.9 C (-20.0 F) |
| 1976 | -27.8 C (-18.0 F) |
| 1977 | -31.1 C (-24.0 F) |
| 1978 | -36.1 C (-33.0 F) |
| 1979 | -33.3 C (-27.9 F) |
| 1980 | -35.0 C (-31.0 F) |
| 1981 | -33.9 C (-29.0 F) |
| 1982 | -31.1 C (-24.0 F) |
| 1983 | -37.2 C (-35.0 F) |
| 1984 | -30.0 C (-22.0 F) |
| 1985 | -31.1 C (-24.0 F) |
| 1986 | -27.8 C (-18.0 F) |
| 1987 | -27.2 C (-17.0 F) |
| 1988 | -26.7 C (-16.1 F) |
| 1989 | -36.7 C (-34.1 F) |
| 1990 | -38.3 C (-36.9 F) |
| 1991 | -27.2 C (-17.0 F) |
| 1992 | -26.1 C (-15.0 F) |
| 1993 | -29.4 C (-20.9 F) |
| 1994 | -28.3 C (-18.9 F) |
| 1995 | -26.1 C (-15.0 F) |
| 1996 | -32.8 C (-27.0 F) |
| 1997 | -28.9 C (-20.0 F) |
| 1998 | -31.1 C (-24.0 F) |
| 1999 | -22.2 C (-8.0 F) |
| 2000 | -23.3 C (-9.9 F) |
| 2001 | -22.2 C (-8.0 F) |
| 2002 | -27.8 C (-18.0 F) |
| 2003 | -27.8 C (-18.0 F) |
| 2004 | -34.4 C (-29.9 F) |
| 2005 | -27.2 C (-17.0 F) |
| 2006 | -27.8 C (-18.0 F) |
| 2007 | -29.4 C (-20.9 F) |
| 2008 | -31.7 C (-25.1 F) |
| 2009 | -30.0 C (-22.0 F) |
| 2010 | -30.0 C (-22.0 F) |
| 2011 | -29.4 C (-20.9 F) |
| 2012 | -22.2 C (-8.0 F) |
| 2013 | -32.2 C (-26.0 F) |
| 2014 | -33.9 C (-29.0 F) |
| 2015 | -23.3 C (-9.9 F) |
| 2016 | -33.9 C (-29.0 F) |
| 2017 | -30.0 C (-22.0 F) |
| 2018 | -27.8 C (-18.0 F) |
| 2019 | -30.0 C (-22.0 F) |
| 2020 | -21.7 C (-7.1 F) |
| 2021 | -25.0 C (-13.0 F) |
| 2022 | -36.1 C (-33.0 F) |
| 2023 | -31.1 C (-24.0 F) |
| 2024 | -40.0 C (-40.0 F) |
| 2025 | -28.9 C (-20.0 F) |
| 2026 | -19.4 C (-2.9 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1895 | 11.4 mm (0.4 in) |
| 1896 | 26.7 mm (1.1 in) |
| 1900 | 25.4 mm (1.0 in) |
| 1901 | 61.0 mm (2.4 in) |
| 1902 | 44.5 mm (1.8 in) |
| 1903 | 30.5 mm (1.2 in) |
| 1904 | 17.8 mm (0.7 in) |
| 1905 | 33.3 mm (1.3 in) |
| 1906 | 28.2 mm (1.1 in) |
| 1907 | 30.0 mm (1.2 in) |
| 1908 | 45.7 mm (1.8 in) |
| 1909 | 33.3 mm (1.3 in) |
| 1910 | 20.3 mm (0.8 in) |
| 1911 | 21.8 mm (0.9 in) |
| 1912 | 33.0 mm (1.3 in) |
| 1913 | 29.2 mm (1.1 in) |
| 1914 | 36.1 mm (1.4 in) |
| 1915 | 30.5 mm (1.2 in) |
| 1916 | 42.4 mm (1.7 in) |
| 1917 | 27.2 mm (1.1 in) |
| 1918 | 38.4 mm (1.5 in) |
| 1919 | 25.7 mm (1.0 in) |
| 1920 | 31.5 mm (1.2 in) |
| 1921 | 32.3 mm (1.3 in) |
| 1922 | 43.2 mm (1.7 in) |
| 1923 | 22.1 mm (0.9 in) |
| 1924 | 19.3 mm (0.8 in) |
| 1925 | 25.7 mm (1.0 in) |
| 1926 | 22.6 mm (0.9 in) |
| 1927 | 23.6 mm (0.9 in) |
| 1928 | 22.6 mm (0.9 in) |
| 1929 | 26.2 mm (1.0 in) |
| 1930 | 24.1 mm (0.9 in) |
| 1931 | 32.3 mm (1.3 in) |
| 1932 | 28.7 mm (1.1 in) |
| 1933 | 32.3 mm (1.3 in) |
| 1934 | 22.4 mm (0.9 in) |
| 1935 | 30.5 mm (1.2 in) |
| 1936 | 16.3 mm (0.6 in) |
| 1937 | 29.5 mm (1.2 in) |
| 1938 | 35.1 mm (1.4 in) |
| 1939 | 21.8 mm (0.9 in) |
| 1940 | 45.5 mm (1.8 in) |
| 1941 | 40.1 mm (1.6 in) |
| 1942 | 16.0 mm (0.6 in) |
| 1943 | 32.0 mm (1.3 in) |
| 1944 | 36.3 mm (1.4 in) |
| 1945 | 15.2 mm (0.6 in) |
| 1946 | 15.5 mm (0.6 in) |
| 1947 | 25.4 mm (1.0 in) |
| 1948 | 28.4 mm (1.1 in) |
| 1949 | 17.0 mm (0.7 in) |
| 1950 | 29.7 mm (1.2 in) |
| 1951 | 14.7 mm (0.6 in) |
| 1952 | 18.3 mm (0.7 in) |
| 1953 | 24.1 mm (0.9 in) |
| 1954 | 19.6 mm (0.8 in) |
| 1955 | 38.9 mm (1.5 in) |
| 1956 | 11.2 mm (0.4 in) |
| 1957 | 17.8 mm (0.7 in) |
| 1958 | 43.2 mm (1.7 in) |
| 1959 | 19.1 mm (0.8 in) |
| 1960 | 15.5 mm (0.6 in) |
| 1961 | 26.7 mm (1.1 in) |
| 1962 | 24.1 mm (0.9 in) |
| 1963 | 24.9 mm (1.0 in) |
| 1964 | 28.7 mm (1.1 in) |
| 1965 | 21.3 mm (0.8 in) |
| 1966 | 21.3 mm (0.8 in) |
| 1967 | 23.1 mm (0.9 in) |
| 1968 | 32.8 mm (1.3 in) |
| 1969 | 36.6 mm (1.4 in) |
| 1970 | 22.1 mm (0.9 in) |
| 1971 | 24.6 mm (1.0 in) |
| 1972 | 18.8 mm (0.7 in) |
| 1973 | 21.6 mm (0.9 in) |
| 1974 | 25.4 mm (1.0 in) |
| 1975 | 40.9 mm (1.6 in) |
| 1976 | 33.0 mm (1.3 in) |
| 1977 | 39.4 mm (1.6 in) |
| 1978 | 26.9 mm (1.1 in) |
| 1979 | 30.0 mm (1.2 in) |
| 1980 | 36.1 mm (1.4 in) |
| 1981 | 32.3 mm (1.3 in) |
| 1982 | 49.3 mm (1.9 in) |
| 1983 | 27.9 mm (1.1 in) |
| 1984 | 23.4 mm (0.9 in) |
| 1985 | 19.3 mm (0.8 in) |
| 1986 | 17.0 mm (0.7 in) |
| 1987 | 36.3 mm (1.4 in) |
| 1988 | 28.4 mm (1.1 in) |
| 1989 | 27.9 mm (1.1 in) |
| 1990 | 19.1 mm (0.8 in) |
| 1991 | 17.8 mm (0.7 in) |
| 1992 | 17.8 mm (0.7 in) |
| 1993 | 36.6 mm (1.4 in) |
| 1994 | 28.2 mm (1.1 in) |
| 1995 | 33.5 mm (1.3 in) |
| 1996 | 18.5 mm (0.7 in) |
| 1997 | 27.2 mm (1.1 in) |
| 1998 | 23.6 mm (0.9 in) |
| 1999 | 24.4 mm (1.0 in) |
| 2000 | 24.1 mm (0.9 in) |
| 2001 | 24.1 mm (0.9 in) |
| 2002 | 33.5 mm (1.3 in) |
| 2003 | 19.1 mm (0.8 in) |
| 2004 | 20.3 mm (0.8 in) |
| 2005 | 30.2 mm (1.2 in) |
| 2006 | 32.3 mm (1.3 in) |
| 2007 | 41.9 mm (1.6 in) |
| 2008 | 38.6 mm (1.5 in) |
| 2009 | 33.0 mm (1.3 in) |
| 2010 | 36.6 mm (1.4 in) |
| 2011 | 32.3 mm (1.3 in) |
| 2012 | 14.7 mm (0.6 in) |
| 2013 | 18.5 mm (0.7 in) |
| 2014 | 21.1 mm (0.8 in) |
| 2015 | 25.7 mm (1.0 in) |
| 2016 | 14.2 mm (0.6 in) |
| 2017 | 36.6 mm (1.4 in) |
| 2018 | 15.7 mm (0.6 in) |
| 2019 | 33.0 mm (1.3 in) |
| 2020 | 18.5 mm (0.7 in) |
| 2021 | 53.3 mm (2.1 in) |
| 2022 | 20.3 mm (0.8 in) |
| 2023 | 50.8 mm (2.0 in) |
| 2024 | 44.5 mm (1.8 in) |
| 2025 | 27.4 mm (1.1 in) |
| 2026 | 50.8 mm (2.0 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1895 | 12.7 mm (0.5 in) |
| 1896 | 26.7 mm (1.1 in) |
| 1900 | 50.5 mm (2.0 in) |
| 1901 | 66.0 mm (2.6 in) |
| 1902 | 78.8 mm (3.1 in) |
| 1903 | 53.9 mm (2.1 in) |
| 1904 | 41.4 mm (1.6 in) |
| 1905 | 64.1 mm (2.5 in) |
| 1906 | 51.8 mm (2.0 in) |
| 1907 | 51.4 mm (2.0 in) |
| 1908 | 94.2 mm (3.7 in) |
| 1909 | 47.5 mm (1.9 in) |
| 1910 | 36.9 mm (1.5 in) |
| 1911 | 45.9 mm (1.8 in) |
| 1912 | 82.7 mm (3.3 in) |
| 1913 | 75.0 mm (3.0 in) |
| 1914 | 61.2 mm (2.4 in) |
| 1915 | 72.9 mm (2.9 in) |
| 1916 | 69.8 mm (2.7 in) |
| 1917 | 36.1 mm (1.4 in) |
| 1918 | 56.9 mm (2.2 in) |
| 1919 | 33.0 mm (1.3 in) |
| 1920 | 47.0 mm (1.9 in) |
| 1921 | 48.2 mm (1.9 in) |
| 1922 | 51.8 mm (2.0 in) |
| 1923 | 51.1 mm (2.0 in) |
| 1924 | 32.0 mm (1.3 in) |
| 1925 | 53.9 mm (2.1 in) |
| 1926 | 27.5 mm (1.1 in) |
| 1927 | 54.7 mm (2.2 in) |
| 1928 | 34.5 mm (1.4 in) |
| 1929 | 32.5 mm (1.3 in) |
| 1930 | 37.2 mm (1.5 in) |
| 1931 | 45.0 mm (1.8 in) |
| 1932 | 44.2 mm (1.7 in) |
| 1933 | 51.3 mm (2.0 in) |
| 1934 | 28.8 mm (1.1 in) |
| 1935 | 31.3 mm (1.2 in) |
| 1936 | 30.8 mm (1.2 in) |
| 1937 | 42.2 mm (1.7 in) |
| 1938 | 49.5 mm (1.9 in) |
| 1939 | 40.6 mm (1.6 in) |
| 1940 | 55.7 mm (2.2 in) |
| 1941 | 54.8 mm (2.2 in) |
| 1942 | 28.2 mm (1.1 in) |
| 1943 | 54.9 mm (2.2 in) |
| 1944 | 62.4 mm (2.5 in) |
| 1945 | 34.3 mm (1.4 in) |
| 1946 | 30.7 mm (1.2 in) |
| 1947 | 37.2 mm (1.5 in) |
| 1948 | 71.2 mm (2.8 in) |
| 1949 | 36.6 mm (1.4 in) |
| 1950 | 34.7 mm (1.4 in) |
| 1951 | 29.9 mm (1.2 in) |
| 1952 | 34.0 mm (1.3 in) |
| 1953 | 39.0 mm (1.5 in) |
| 1954 | 23.9 mm (0.9 in) |
| 1955 | 40.7 mm (1.6 in) |
| 1956 | 21.9 mm (0.9 in) |
| 1957 | 33.5 mm (1.3 in) |
| 1958 | 51.6 mm (2.0 in) |
| 1959 | 51.9 mm (2.0 in) |
| 1960 | 35.1 mm (1.4 in) |
| 1961 | 43.4 mm (1.7 in) |
| 1962 | 35.5 mm (1.4 in) |
| 1963 | 45.2 mm (1.8 in) |
| 1964 | 55.3 mm (2.2 in) |
| 1965 | 41.6 mm (1.6 in) |
| 1966 | 32.5 mm (1.3 in) |
| 1967 | 39.5 mm (1.6 in) |
| 1968 | 41.9 mm (1.6 in) |
| 1969 | 46.8 mm (1.8 in) |
| 1970 | 33.5 mm (1.3 in) |
| 1971 | 35.8 mm (1.4 in) |
| 1972 | 22.6 mm (0.9 in) |
| 1973 | 48.0 mm (1.9 in) |
| 1974 | 32.8 mm (1.3 in) |
| 1975 | 67.5 mm (2.7 in) |
| 1976 | 43.7 mm (1.7 in) |
| 1977 | 54.4 mm (2.1 in) |
| 1978 | 38.1 mm (1.5 in) |
| 1979 | 35.8 mm (1.4 in) |
| 1980 | 55.2 mm (2.2 in) |
| 1981 | 46.0 mm (1.8 in) |
| 1982 | 56.2 mm (2.2 in) |
| 1983 | 39.1 mm (1.5 in) |
| 1984 | 30.0 mm (1.2 in) |
| 1985 | 38.9 mm (1.5 in) |
| 1986 | 38.1 mm (1.5 in) |
| 1987 | 65.5 mm (2.6 in) |
| 1988 | 30.2 mm (1.2 in) |
| 1989 | 39.9 mm (1.6 in) |
| 1990 | 41.4 mm (1.6 in) |
| 1991 | 26.6 mm (1.0 in) |
| 1992 | 44.0 mm (1.7 in) |
| 1993 | 51.5 mm (2.0 in) |
| 1994 | 34.3 mm (1.4 in) |
| 1995 | 78.7 mm (3.1 in) |
| 1996 | 28.9 mm (1.1 in) |
| 1997 | 43.5 mm (1.7 in) |
| 1998 | 34.6 mm (1.4 in) |
| 1999 | 47.1 mm (1.9 in) |
| 2000 | 29.3 mm (1.2 in) |
| 2001 | 38.3 mm (1.5 in) |
| 2002 | 37.1 mm (1.5 in) |
| 2003 | 28.4 mm (1.1 in) |
| 2004 | 31.5 mm (1.2 in) |
| 2005 | 41.5 mm (1.6 in) |
| 2006 | 50.5 mm (2.0 in) |
| 2007 | 50.6 mm (2.0 in) |
| 2008 | 65.5 mm (2.6 in) |
| 2009 | 34.8 mm (1.4 in) |
| 2010 | 46.6 mm (1.8 in) |
| 2011 | 76.8 mm (3.0 in) |
| 2012 | 25.9 mm (1.0 in) |
| 2013 | 30.5 mm (1.2 in) |
| 2014 | 38.6 mm (1.5 in) |
| 2015 | 33.8 mm (1.3 in) |
| 2016 | 30.1 mm (1.2 in) |
| 2017 | 54.9 mm (2.2 in) |
| 2018 | 49.7 mm (2.0 in) |
| 2019 | 41.7 mm (1.6 in) |
| 2020 | 26.5 mm (1.0 in) |
| 2021 | 18.2 mm (0.7 in) |
| 2022 | 25.4 mm (1.0 in) |
| 2023 | 50.8 mm (2.0 in) |
| 2024 | 45.3 mm (1.8 in) |
| 2025 | 45.2 mm (1.8 in) |
| 2026 | 50.8 mm (2.0 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1895 | 56 days |
| 1896 | 38 days |
| 1900 | 36 days |
| 1901 | 30 days |
| 1902 | 43 days |
| 1903 | 32 days |
| 1904 | 71 days |
| 1905 | 33 days |
| 1906 | 38 days |
| 1907 | 21 days |
| 1908 | 35 days |
| 1909 | 26 days |
| 1910 | 21 days |
| 1911 | 48 days |
| 1912 | 49 days |
| 1913 | 29 days |
| 1914 | 36 days |
| 1915 | 27 days |
| 1916 | 23 days |
| 1917 | 42 days |
| 1918 | 24 days |
| 1919 | 48 days |
| 1920 | 24 days |
| 1921 | 33 days |
| 1922 | 51 days |
| 1923 | 32 days |
| 1924 | 22 days |
| 1925 | 37 days |
| 1926 | 38 days |
| 1927 | 21 days |
| 1928 | 26 days |
| 1929 | 28 days |
| 1930 | 34 days |
| 1931 | 39 days |
| 1932 | 38 days |
| 1933 | 36 days |
| 1934 | 37 days |
| 1935 | 44 days |
| 1936 | 53 days |
| 1937 | 36 days |
| 1938 | 59 days |
| 1939 | 78 days |
| 1940 | 21 days |
| 1941 | 23 days |
| 1942 | 35 days |
| 1943 | 38 days |
| 1944 | 40 days |
| 1945 | 63 days |
| 1946 | 39 days |
| 1947 | 33 days |
| 1948 | 40 days |
| 1949 | 29 days |
| 1950 | 53 days |
| 1951 | 29 days |
| 1952 | 64 days |
| 1953 | 47 days |
| 1954 | 49 days |
| 1955 | 52 days |
| 1956 | 57 days |
| 1957 | 60 days |
| 1958 | 50 days |
| 1959 | 35 days |
| 1960 | 41 days |
| 1961 | 40 days |
| 1962 | 30 days |
| 1963 | 38 days |
| 1964 | 54 days |
| 1965 | 41 days |
| 1966 | 39 days |
| 1967 | 27 days |
| 1968 | 45 days |
| 1969 | 49 days |
| 1970 | 43 days |
| 1971 | 45 days |
| 1972 | 36 days |
| 1973 | 42 days |
| 1974 | 28 days |
| 1975 | 32 days |
| 1976 | 67 days |
| 1977 | 43 days |
| 1978 | 28 days |
| 1979 | 48 days |
| 1980 | 31 days |
| 1981 | 34 days |
| 1982 | 31 days |
| 1983 | 32 days |
| 1984 | 40 days |
| 1985 | 34 days |
| 1986 | 29 days |
| 1987 | 91 days |
| 1988 | 75 days |
| 1989 | 38 days |
| 1990 | 42 days |
| 1991 | 41 days |
| 1992 | 39 days |
| 1993 | 48 days |
| 1994 | 29 days |
| 1995 | 35 days |
| 1996 | 52 days |
| 1997 | 28 days |
| 1998 | 26 days |
| 1999 | 53 days |
| 2000 | 35 days |
| 2001 | 46 days |
| 2002 | 36 days |
| 2003 | 33 days |
| 2004 | 48 days |
| 2005 | 70 days |
| 2006 | 72 days |
| 2007 | 34 days |
| 2008 | 45 days |
| 2009 | 31 days |
| 2010 | 21 days |
| 2011 | 39 days |
| 2012 | 34 days |
| 2013 | 32 days |
| 2014 | 31 days |
| 2015 | 33 days |
| 2016 | 36 days |
| 2017 | 29 days |
| 2018 | 51 days |
| 2019 | 29 days |
| 2020 | 45 days |
| 2021 | 56 days |
| 2022 | 23 days |
| 2023 | 52 days |
| 2024 | 31 days |
| 2025 | 77 days |
| 2026 | 48 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
118 years with a frostAcross 118 years with a frost, the median last spring frost at Dillon U of Montana Western falls on 4 June and the median first autumn frost on 7 September, which leaves a median of 96 days between them.
In 1993 to 2025 the median growing season was 99 days. That is 8 days more than in 1900 to 1929.
Fitted over all years, the growing season changes by +1.6 days per decade at this station.
| Measure | Median, all years | Earliest period (1900 to 1929) | Recent period (1993 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 4 June | 31 May | 6 June | 6 days later | +0.5 days per decade |
| First autumn frost | 7 September | 1 September | 16 September | 15 days later | +2.1 days per decade |
| Growing days | 96 days | 91 days | 99 days | 8 days more | +1.6 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
126 years, 1900 to 2025A day with at least 26.9 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 55.7 mm (2.2 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 26.9 mm (1.1 in) | |
| 5 years | 35.3 mm (1.4 in) | |
| 10 years | 40.6 mm (1.6 in) | |
| 25 years | 46.9 mm (1.8 in) | |
| 50 years | 51.4 mm (2.0 in) | |
| 100 years | 55.7 mm (2.2 in) |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 126 years of values from 1900 to 2025.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 61.0 mm (2.4 in) in 1901; 53.3 mm (2.1 in) in 2021; 50.8 mm (2.0 in) in 2023.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Dillon U of Montana Western, at 2000. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 2000 ran 0.3 C (0.5 F) lower than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 2000 | -0.3 | -0.5 | likely | 5 |
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
2009 to 2025 against 1961 to 1990Over 2009 to 2025, Dillon U of Montana Western had a mean temperature of 6.8 C (44.3 F) and 284.3 mm (11.2 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Wells (United States, 493 km away), Ely AP (United States, 682 km away) and Panguitch (United States, 821 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Wells | United States | 493 km (306 mi) | 6.7 C (44.0 F) | 270.3 mm (10.6 in) | 0.59 |
| Ely AP | United States | 682 km (424 mi) | 7.0 C (44.6 F) | 257.9 mm (10.2 in) | 0.68 |
| Panguitch | United States | 821 km (510 mi) | 6.8 C (44.3 F) | 260.8 mm (10.3 in) | 0.69 |
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
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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-15).