Ft Assiniboine Weather Records (USC00243110)
Record envelope, standing records and threshold days for Ft Assiniboine (USC00243110), Montana, United States, with 110 years of record.
Key Facts for Ft Assiniboine
- Ft Assiniboine (USC00243110) is a weather station in Montana, United States at 48.50 latitude and -109.80 longitude, 815 m (2,675 ft) above sea level.
- The station reports from 1917 to 2026, 110 years of record.
- 1,464 records set at Ft Assiniboine still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Ft Assiniboine set a daily record low minimum temperature of 4.4 C (39.9 F) on 4 August 2026.
About the Station
- Location: Montana, United States, 48.50 latitude, -109.80 longitude.
- Elevation: 815 m (2,675 ft).
- Period of record: 1917 to 2026, 110 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 | 20.0 C (68.0 F) | -45.0 C (-49.0 F) | 15.6 C (60.1 F) | -27.8 C (-18.0 F) |
| Feb | 23.9 C (75.0 F) | -44.4 C (-47.9 F) | 18.3 C (64.9 F) | -23.9 C (-11.0 F) |
| Mar | 27.8 C (82.0 F) | -36.7 C (-34.1 F) | 23.9 C (75.0 F) | -18.9 C (-2.0 F) |
| Apr | 34.4 C (93.9 F) | -23.9 C (-11.0 F) | 27.2 C (81.0 F) | -10.0 C (14.0 F) |
| May | 36.7 C (98.1 F) | -11.7 C (10.9 F) | 33.9 C (93.0 F) | -5.6 C (21.9 F) |
| Jun | 42.2 C (108.0 F) | -1.1 C (30.0 F) | 28.9 C (84.0 F) | 3.3 C (37.9 F) |
| Jul | 41.7 C (107.1 F) | 2.8 C (37.0 F) | 38.9 C (102.0 F) | 8.9 C (48.0 F) |
| Aug | 43.9 C (111.0 F) | -1.1 C (30.0 F) | 38.9 C (102.0 F) | 4.4 C (39.9 F) |
| Sep | 38.9 C (102.0 F) | -11.1 C (12.0 F) | 22.2 C (72.0 F) | 1.1 C (34.0 F) |
| Oct | 32.8 C (91.0 F) | -29.4 C (-20.9 F) | n/a | n/a |
| Nov | 25.6 C (78.1 F) | -33.3 C (-27.9 F) | n/a | n/a |
| Dec | 20.6 C (69.1 F) | -42.2 C (-44.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1917 | 27 |
| 1918 | 31 |
| 1919 | 37 |
| 1920 | 7 |
| 1921 | 11 |
| 1922 | 16 |
| 1923 | 12 |
| 1924 | 14 |
| 1925 | 11 |
| 1926 | 11 |
| 1927 | 5 |
| 1928 | 18 |
| 1929 | 17 |
| 1930 | 23 |
| 1931 | 10 |
| 1932 | 7 |
| 1933 | 14 |
| 1934 | 10 |
| 1935 | 20 |
| 1936 | 68 |
| 1937 | 13 |
| 1938 | 8 |
| 1939 | 25 |
| 1940 | 15 |
| 1941 | 8 |
| 1942 | 7 |
| 1943 | 24 |
| 1944 | 11 |
| 1945 | 8 |
| 1946 | 11 |
| 1947 | 15 |
| 1948 | 7 |
| 1949 | 7 |
| 1950 | 21 |
| 1951 | 24 |
| 1952 | 13 |
| 1953 | 8 |
| 1954 | 20 |
| 1955 | 16 |
| 1956 | 7 |
| 1957 | 9 |
| 1958 | 5 |
| 1959 | 12 |
| 1960 | 10 |
| 1961 | 11 |
| 1962 | 16 |
| 1963 | 15 |
| 1964 | 11 |
| 1965 | 10 |
| 1966 | 13 |
| 1967 | 11 |
| 1968 | 19 |
| 1969 | 29 |
| 1970 | 9 |
| 1971 | 7 |
| 1972 | 14 |
| 1973 | 15 |
| 1974 | 8 |
| 1975 | 7 |
| 1976 | 11 |
| 1977 | 10 |
| 1978 | 4 |
| 1979 | 8 |
| 1980 | 18 |
| 1981 | 18 |
| 1982 | 9 |
| 1983 | 9 |
| 1984 | 13 |
| 1985 | 28 |
| 1986 | 11 |
| 1987 | 26 |
| 1988 | 28 |
| 1989 | 13 |
| 1990 | 13 |
| 1991 | 19 |
| 1992 | 30 |
| 1993 | 11 |
| 1994 | 8 |
| 1995 | 8 |
| 1996 | 13 |
| 1997 | 11 |
| 1998 | 12 |
| 1999 | 10 |
| 2000 | 5 |
| 2001 | 7 |
| 2002 | 25 |
| 2003 | 12 |
| 2004 | 9 |
| 2005 | 11 |
| 2006 | 6 |
| 2007 | 14 |
| 2008 | 9 |
| 2009 | 10 |
| 2010 | 10 |
| 2011 | 5 |
| 2012 | 7 |
| 2013 | 8 |
| 2014 | 1 |
| 2015 | 7 |
| 2016 | 4 |
| 2017 | 11 |
| 2018 | 6 |
| 2019 | 13 |
| 2020 | 6 |
| 2021 | 15 |
| 2022 | 14 |
| 2023 | 11 |
| 2024 | 9 |
| 2025 | 6 |
| 2026 | 14 |
All-Time Record Progression
6 new records| Date | Kind | Detail |
|---|---|---|
| 1959-06-27 | Record daily precipitation | Record daily precipitation 74.2 mm (2.9 in) |
| 1961-08-06 | Record high maximum temperature | Record high maximum temperature 43.9 C (111.0 F) |
| 1969-01-24 | Record low minimum temperature | Record low minimum temperature -45.0 C (-49.0 F) |
| 1983-07-10 | Record daily precipitation | Record daily precipitation 75.4 mm (3.0 in) |
| 2009-01-03 | Record daily snowfall | Record daily snowfall 24.1 cm (9.5 in) |
| 2017-10-03 | Record daily snowfall | Record daily snowfall 45.7 cm (18.0 in) |
Wettest Day of Each Month
Jul: 75.4 mm (3.0 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 18.8 mm (0.7 in) | 25 January 1959 |
| Feb | 17.8 mm (0.7 in) | 5 February 2018 |
| Mar | 25.7 mm (1.0 in) | 18 March 2018 |
| Apr | 50.8 mm (2.0 in) | 4 April 1955 |
| May | 64.5 mm (2.5 in) | 13 May 1974 |
| Jun | 74.2 mm (2.9 in) | 27 June 1959 |
| Jul | 75.4 mm (3.0 in) | 10 July 1983 |
| Aug | 62.2 mm (2.4 in) | 15 August 1968 |
| Sep | 61.7 mm (2.4 in) | 25 September 1986 |
| Oct | 42.7 mm (1.7 in) | 22 October 1980 |
| Nov | 22.9 mm (0.9 in) | 9 November 2020 |
| Dec | 23.6 mm (0.9 in) | 11 December 2025 |
Period of Record Coverage
1917 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1917 | 361 | 99% | Yes |
| 1918 | 364 | 100% | Yes |
| 1919 | 365 | 100% | Yes |
| 1920 | 366 | 100% | Yes |
| 1921 | 364 | 100% | Yes |
| 1922 | 364 | 100% | Yes |
| 1923 | 365 | 100% | Yes |
| 1924 | 366 | 100% | Yes |
| 1925 | 363 | 99% | Yes |
| 1926 | 363 | 99% | Yes |
| 1927 | 363 | 99% | Yes |
| 1928 | 366 | 100% | Yes |
| 1929 | 362 | 99% | Yes |
| 1930 | 364 | 100% | Yes |
| 1931 | 365 | 100% | Yes |
| 1932 | 365 | 100% | Yes |
| 1933 | 365 | 100% | Yes |
| 1934 | 363 | 99% | Yes |
| 1935 | 364 | 100% | Yes |
| 1936 | 366 | 100% | Yes |
| 1937 | 364 | 100% | Yes |
| 1938 | 365 | 100% | Yes |
| 1939 | 364 | 100% | Yes |
| 1940 | 364 | 99% | Yes |
| 1941 | 364 | 100% | Yes |
| 1942 | 364 | 100% | Yes |
| 1943 | 365 | 100% | Yes |
| 1944 | 366 | 100% | Yes |
| 1945 | 361 | 99% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 364 | 100% | Yes |
| 1948 | 365 | 100% | Yes |
| 1949 | 273 | 75% | No |
| 1950 | 364 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 363 | 99% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 364 | 100% | Yes |
| 1956 | 334 | 91% | Yes |
| 1957 | 364 | 100% | Yes |
| 1958 | 364 | 100% | Yes |
| 1959 | 364 | 100% | Yes |
| 1960 | 362 | 99% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 356 | 98% | Yes |
| 1963 | 343 | 94% | Yes |
| 1964 | 305 | 83% | No |
| 1965 | 359 | 98% | Yes |
| 1966 | 364 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 363 | 99% | Yes |
| 1969 | 348 | 95% | Yes |
| 1970 | 340 | 93% | Yes |
| 1971 | 361 | 99% | Yes |
| 1972 | 363 | 99% | Yes |
| 1973 | 360 | 99% | Yes |
| 1974 | 361 | 99% | Yes |
| 1975 | 357 | 98% | Yes |
| 1976 | 357 | 98% | Yes |
| 1977 | 363 | 99% | Yes |
| 1978 | 363 | 99% | Yes |
| 1979 | 361 | 99% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 359 | 98% | Yes |
| 1982 | 361 | 99% | Yes |
| 1983 | 358 | 98% | Yes |
| 1984 | 360 | 98% | Yes |
| 1985 | 359 | 98% | Yes |
| 1986 | 360 | 99% | Yes |
| 1987 | 359 | 98% | Yes |
| 1988 | 361 | 99% | Yes |
| 1989 | 354 | 97% | Yes |
| 1990 | 362 | 99% | Yes |
| 1991 | 352 | 96% | Yes |
| 1992 | 360 | 98% | Yes |
| 1993 | 357 | 98% | Yes |
| 1994 | 351 | 96% | Yes |
| 1995 | 363 | 99% | Yes |
| 1996 | 359 | 98% | Yes |
| 1997 | 358 | 98% | Yes |
| 1998 | 361 | 99% | Yes |
| 1999 | 365 | 100% | Yes |
| 2000 | 334 | 91% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 364 | 100% | Yes |
| 2003 | 364 | 100% | Yes |
| 2004 | 365 | 100% | Yes |
| 2005 | 335 | 92% | Yes |
| 2006 | 362 | 99% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 366 | 100% | Yes |
| 2009 | 365 | 100% | Yes |
| 2010 | 364 | 100% | Yes |
| 2011 | 364 | 100% | Yes |
| 2012 | 364 | 99% | Yes |
| 2013 | 350 | 96% | Yes |
| 2014 | 363 | 99% | Yes |
| 2015 | 364 | 100% | Yes |
| 2016 | 270 | 74% | No |
| 2017 | 245 | 67% | No |
| 2018 | 365 | 100% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 360 | 98% | Yes |
| 2021 | 360 | 99% | Yes |
| 2022 | 364 | 100% | Yes |
| 2023 | 363 | 99% | Yes |
| 2024 | 365 | 100% | Yes |
| 2025 | 365 | 100% | Yes |
| 2026 | 245 | 67% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 4 August 2026 | Ft Assiniboine, US | daily low min | 4.4 C (39.9 F) | 1.2 C (2.2 F) | 108 years | 43 of 100 (Notable) |
| 2 August 2026 | Ft Assiniboine, US | daily high max | 38.9 C (102.0 F) | 0.6 C (1.1 F) | 55 years | 27 of 100 (Routine) |
| 12 July 2026 | Ft Assiniboine, US | daily high max (Tie) | 37.8 C (100.0 F) | tie | 68 years | 7 of 100 (Routine) |
| 29 June 2026 | Ft Assiniboine, US | daily rain | 28.4 mm (1.1 in) | 2.2 mm (0.09 in) | 84 years | 37 of 100 (Notable) |
| 2 June 2026 | Ft Assiniboine, US | daily low max | 12.2 C (54.0 F) | 0.6 C (1.1 F) | 96 years | 40 of 100 (Notable) |
| 6 May 2026 | Ft Assiniboine, US | daily low min | -5.6 C (21.9 F) | 1.2 C (2.2 F) | 48 years | 26 of 100 (Routine) |
| 27 April 2026 | Ft Assiniboine, US | daily low min | -10.0 C (14.0 F) | 1.1 C (2.0 F) | 64 years | 31 of 100 (Routine) |
| 21 March 2026 | Ft Assiniboine, US | daily high max | 23.9 C (75.0 F) | 1.1 C (2.0 F) | 87 years | 37 of 100 (Notable) |
| 20 March 2026 | Ft Assiniboine, US | daily high max (Tie) | 22.8 C (73.0 F) | tie | 97 years | 9 of 100 (Routine) |
| 19 March 2026 | Ft Assiniboine, US | daily high min | 6.7 C (44.1 F) | 0.6 C (1.1 F) | 53 years | 26 of 100 (Routine) |
| 18 March 2026 | Ft Assiniboine, US | daily high min | 8.3 C (46.9 F) | 3.3 C (5.9 F) | 53 years | 30 of 100 (Routine) |
| 8 March 2026 | Ft Assiniboine, US | daily high min | 7.2 C (45.0 F) | 3.9 C (7.0 F) | 71 years | 36 of 100 (Notable) |
| 8 March 2026 | Ft Assiniboine, US | daily high max | 18.9 C (66.0 F) | 1.1 C (2.0 F) | 19 years | 16 of 100 (Routine) |
| 15 February 2026 | Ft Assiniboine, US | daily high max (Tie) | 12.2 C (54.0 F) | tie | 44 years | 5 of 100 (Routine) |
| 8 February 2026 | Ft Assiniboine, US | daily high min | 4.4 C (39.9 F) | 1.6 C (2.9 F) | 11 years | 14 of 100 (Routine) |
| 8 February 2026 | Ft Assiniboine, US | daily high max | 17.2 C (63.0 F) | 1.1 C (2.0 F) | 4 years | 12 of 100 (Routine) |
| 6 February 2026 | Ft Assiniboine, US | daily high max | 18.3 C (64.9 F) | 0.5 C (0.9 F) | 39 years | 21 of 100 (Routine) |
| 5 February 2026 | Ft Assiniboine, US | daily high max | 16.7 C (62.1 F) | 1.7 C (3.1 F) | 63 years | 29 of 100 (Routine) |
| 13 January 2026 | Ft Assiniboine, US | daily high min (Tie) | 3.9 C (39.0 F) | tie | 4 years | 2 of 100 (Routine) |
| 13 December 2025 | Ft Assiniboine, US | daily rain | 10.9 mm (0.4 in) | 3.3 mm (0.13 in) | 43 years | 20 of 100 (Routine) |
Climate Trend
102 complete years, 1917 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1917 | 4.2 C | -2.04 C |
| 1918 | 6.0 C | -0.23 C |
| 1919 | 5.3 C | -0.92 C |
| 1920 | 5.8 C | -0.44 C |
| 1921 | 6.4 C | +0.15 C |
| 1922 | 4.2 C | -1.98 C |
| 1923 | 5.9 C | -0.28 C |
| 1924 | 5.1 C | -1.09 C |
| 1925 | 6.2 C | -0.06 C |
| 1926 | 6.7 C | +0.49 C |
| 1927 | 3.5 C | -2.68 C |
| 1928 | 6.3 C | +0.09 C |
| 1929 | 4.4 C | -1.80 C |
| 1930 | 6.4 C | +0.22 C |
| 1931 | 7.3 C | +1.12 C |
| 1932 | 5.7 C | -0.53 C |
| 1933 | 6.3 C | +0.07 C |
| 1934 | 7.9 C | +1.67 C |
| 1935 | 5.1 C | -1.08 C |
| 1936 | 5.0 C | -1.19 C |
| 1937 | 5.0 C | -1.24 C |
| 1938 | 6.3 C | +0.10 C |
| 1939 | 7.2 C | +1.02 C |
| 1940 | 6.1 C | -0.13 C |
| 1941 | 6.9 C | +0.65 C |
| 1942 | 5.5 C | -0.73 C |
| 1943 | 5.6 C | -0.61 C |
| 1944 | 5.9 C | -0.31 C |
| 1945 | 5.1 C | -1.09 C |
| 1946 | 6.3 C | +0.09 C |
| 1947 | 5.9 C | -0.36 C |
| 1948 | 5.7 C | -0.54 C |
| 1950 | 3.2 C | -2.98 C |
| 1951 | 3.1 C | -3.08 C |
| 1952 | 5.6 C | -0.66 C |
| 1953 | 7.6 C | +1.37 C |
| 1954 | 6.3 C | +0.05 C |
| 1955 | 3.8 C | -2.46 C |
| 1957 | 5.8 C | -0.43 C |
| 1958 | 6.2 C | -0.05 C |
| 1959 | 5.0 C | -1.23 C |
| 1960 | 5.4 C | -0.78 C |
| 1961 | 7.1 C | +0.91 C |
| 1962 | 6.4 C | +0.17 C |
| 1963 | 7.1 C | +0.89 C |
| 1965 | 4.8 C | -1.40 C |
| 1966 | 5.4 C | -0.82 C |
| 1967 | 6.5 C | +0.25 C |
| 1968 | 5.9 C | -0.32 C |
| 1969 | 4.4 C | -1.77 C |
| 1970 | 4.8 C | -1.40 C |
| 1971 | 6.3 C | +0.04 C |
| 1972 | 5.8 C | -0.42 C |
| 1973 | 7.5 C | +1.27 C |
| 1974 | 7.6 C | +1.41 C |
| 1975 | 6.0 C | -0.24 C |
| 1976 | 8.3 C | +2.10 C |
| 1977 | 6.8 C | +0.55 C |
| 1978 | 4.8 C | -1.41 C |
| 1979 | 6.0 C | -0.17 C |
| 1980 | 7.4 C | +1.17 C |
| 1981 | 8.5 C | +2.29 C |
| 1982 | 4.8 C | -1.44 C |
| 1983 | 6.7 C | +0.46 C |
| 1984 | 7.2 C | +1.02 C |
| 1985 | 5.9 C | -0.35 C |
| 1986 | 7.8 C | +1.61 C |
| 1987 | 9.3 C | +3.12 C |
| 1988 | 8.8 C | +2.59 C |
| 1989 | 6.4 C | +0.23 C |
| 1990 | 8.1 C | +1.91 C |
| 1991 | 8.1 C | +1.92 C |
| 1992 | 8.5 C | +2.26 C |
| 1993 | 6.2 C | -0.02 C |
| 1994 | 7.2 C | +1.01 C |
| 1995 | 6.2 C | -0.05 C |
| 1996 | 5.0 C | -1.26 C |
| 1997 | 7.5 C | +1.24 C |
| 1998 | 7.9 C | +1.68 C |
| 1999 | 8.0 C | +1.80 C |
| 2001 | 7.5 C | +1.29 C |
| 2002 | 5.8 C | -0.41 C |
| 2003 | 7.1 C | +0.86 C |
| 2004 | 6.5 C | +0.32 C |
| 2006 | 8.1 C | +1.90 C |
| 2007 | 7.6 C | +1.35 C |
| 2008 | 6.1 C | -0.15 C |
| 2009 | 5.5 C | -0.70 C |
| 2010 | 4.8 C | -1.39 C |
| 2011 | 5.8 C | -0.44 C |
| 2012 | 7.3 C | +1.05 C |
| 2013 | 6.0 C | -0.24 C |
| 2014 | 5.8 C | -0.45 C |
| 2015 | 7.3 C | +1.11 C |
| 2018 | 4.8 C | -1.38 C |
| 2019 | 4.2 C | -1.98 C |
| 2020 | 6.8 C | +0.59 C |
| 2021 | 7.0 C | +0.74 C |
| 2022 | 5.9 C | -0.32 C |
| 2023 | 7.0 C | +0.75 C |
| 2024 | 6.6 C | +0.37 C |
| 2025 | 6.6 C | +0.43 C |
The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1917 to 2025. In Fahrenheit: 0.2 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 102 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.1 C (0.1 to 0.2) per decade | 0.2 F (0.1 to 0.4) per decade | 1917 to 2025 | 102 | Rise |
| Mean daily maximum | 0.2 C (0.1 to 0.3) per decade | 0.3 F (0.2 to 0.5) per decade | 1917 to 2025 | 102 | Rise |
| Mean daily minimum | 0.08 C (0.01 to 0.15) per decade | 0.14 F (0.02 to 0.26) per decade | 1917 to 2025 | 102 | Rise |
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
1917 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 43.9 C (111.0 F) | 1961 | 38.3 C (100.9 F) | 110 |
| Coldest night (TNn) | -45.0 C (-49.0 F) | 1969 | -34.7 C (-30.5 F) | 110 |
| Wettest day (Rx1day) | 75.4 mm (3.0 in) | 1983 | 30.8 mm (1.2 in) | 110 |
| Wettest five days (Rx5day) | 147.9 mm (5.8 in) | 2013 | 46.3 mm (1.8 in) | 110 |
| Longest dry spell (CDD) | 86 days | 1926 | 39 days | 110 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1917 | 38.9 C (102.0 F) |
| 1918 | 37.8 C (100.0 F) |
| 1919 | 40.0 C (104.0 F) |
| 1920 | 38.9 C (102.0 F) |
| 1921 | 40.0 C (104.0 F) |
| 1922 | 37.2 C (99.0 F) |
| 1923 | 34.4 C (93.9 F) |
| 1924 | 35.0 C (95.0 F) |
| 1925 | 37.2 C (99.0 F) |
| 1926 | 38.3 C (100.9 F) |
| 1927 | 34.4 C (93.9 F) |
| 1928 | 36.1 C (97.0 F) |
| 1929 | 40.6 C (105.1 F) |
| 1930 | 40.0 C (104.0 F) |
| 1931 | 39.4 C (102.9 F) |
| 1932 | 37.8 C (100.0 F) |
| 1933 | 41.1 C (106.0 F) |
| 1934 | 38.3 C (100.9 F) |
| 1935 | 38.3 C (100.9 F) |
| 1936 | 40.6 C (105.1 F) |
| 1937 | 40.6 C (105.1 F) |
| 1938 | 36.1 C (97.0 F) |
| 1939 | 39.4 C (102.9 F) |
| 1940 | 41.7 C (107.1 F) |
| 1941 | 41.1 C (106.0 F) |
| 1942 | 36.1 C (97.0 F) |
| 1943 | 36.1 C (97.0 F) |
| 1944 | 37.2 C (99.0 F) |
| 1945 | 38.9 C (102.0 F) |
| 1946 | 38.3 C (100.9 F) |
| 1947 | 38.9 C (102.0 F) |
| 1948 | 37.2 C (99.0 F) |
| 1949 | 41.1 C (106.0 F) |
| 1950 | 36.1 C (97.0 F) |
| 1951 | 40.0 C (104.0 F) |
| 1952 | 36.7 C (98.1 F) |
| 1953 | 40.6 C (105.1 F) |
| 1954 | 38.3 C (100.9 F) |
| 1955 | 36.7 C (98.1 F) |
| 1956 | 37.2 C (99.0 F) |
| 1957 | 37.8 C (100.0 F) |
| 1958 | 35.6 C (96.1 F) |
| 1959 | 37.2 C (99.0 F) |
| 1960 | 40.6 C (105.1 F) |
| 1961 | 43.9 C (111.0 F) |
| 1962 | 35.6 C (96.1 F) |
| 1963 | 40.6 C (105.1 F) |
| 1964 | 38.3 C (100.9 F) |
| 1965 | 36.1 C (97.0 F) |
| 1966 | 37.8 C (100.0 F) |
| 1967 | 38.9 C (102.0 F) |
| 1968 | 38.3 C (100.9 F) |
| 1969 | 41.7 C (107.1 F) |
| 1970 | 37.2 C (99.0 F) |
| 1971 | 40.0 C (104.0 F) |
| 1972 | 38.3 C (100.9 F) |
| 1973 | 39.4 C (102.9 F) |
| 1974 | 38.3 C (100.9 F) |
| 1975 | 39.4 C (102.9 F) |
| 1976 | 38.9 C (102.0 F) |
| 1977 | 36.7 C (98.1 F) |
| 1978 | 36.7 C (98.1 F) |
| 1979 | 38.3 C (100.9 F) |
| 1980 | 37.8 C (100.0 F) |
| 1981 | 39.4 C (102.9 F) |
| 1982 | 36.1 C (97.0 F) |
| 1983 | 42.2 C (108.0 F) |
| 1984 | 42.2 C (108.0 F) |
| 1985 | 39.4 C (102.9 F) |
| 1986 | 36.7 C (98.1 F) |
| 1987 | 37.8 C (100.0 F) |
| 1988 | 38.9 C (102.0 F) |
| 1989 | 38.9 C (102.0 F) |
| 1990 | 40.0 C (104.0 F) |
| 1991 | 40.0 C (104.0 F) |
| 1992 | 36.7 C (98.1 F) |
| 1993 | 36.7 C (98.1 F) |
| 1994 | 37.8 C (100.0 F) |
| 1995 | 34.4 C (93.9 F) |
| 1996 | 37.8 C (100.0 F) |
| 1997 | 37.8 C (100.0 F) |
| 1998 | 38.3 C (100.9 F) |
| 1999 | 37.8 C (100.0 F) |
| 2000 | 39.4 C (102.9 F) |
| 2001 | 41.1 C (106.0 F) |
| 2002 | 37.2 C (99.0 F) |
| 2003 | 40.6 C (105.1 F) |
| 2004 | 38.9 C (102.0 F) |
| 2005 | 39.4 C (102.9 F) |
| 2006 | 37.8 C (100.0 F) |
| 2007 | 41.7 C (107.1 F) |
| 2008 | 37.8 C (100.0 F) |
| 2009 | 36.7 C (98.1 F) |
| 2010 | 38.9 C (102.0 F) |
| 2011 | 38.3 C (100.9 F) |
| 2012 | 36.7 C (98.1 F) |
| 2013 | 36.1 C (97.0 F) |
| 2014 | 35.6 C (96.1 F) |
| 2015 | 36.7 C (98.1 F) |
| 2016 | 35.6 C (96.1 F) |
| 2017 | 38.3 C (100.9 F) |
| 2018 | 38.9 C (102.0 F) |
| 2019 | 36.7 C (98.1 F) |
| 2020 | 37.2 C (99.0 F) |
| 2021 | 38.9 C (102.0 F) |
| 2022 | 38.3 C (100.9 F) |
| 2023 | 38.9 C (102.0 F) |
| 2024 | 40.0 C (104.0 F) |
| 2025 | 36.1 C (97.0 F) |
| 2026 | 38.9 C (102.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1917 | -40.0 C (-40.0 F) |
| 1918 | -40.0 C (-40.0 F) |
| 1919 | -35.6 C (-32.1 F) |
| 1920 | -36.1 C (-33.0 F) |
| 1921 | -32.8 C (-27.0 F) |
| 1922 | -37.8 C (-36.0 F) |
| 1923 | -36.1 C (-33.0 F) |
| 1924 | -36.7 C (-34.1 F) |
| 1925 | -30.6 C (-23.1 F) |
| 1926 | -30.0 C (-22.0 F) |
| 1927 | -38.3 C (-36.9 F) |
| 1928 | -35.0 C (-31.0 F) |
| 1929 | -40.6 C (-41.1 F) |
| 1930 | -35.6 C (-32.1 F) |
| 1931 | -29.4 C (-20.9 F) |
| 1932 | -34.4 C (-29.9 F) |
| 1933 | -35.0 C (-31.0 F) |
| 1934 | -27.8 C (-18.0 F) |
| 1935 | -37.8 C (-36.0 F) |
| 1936 | -44.4 C (-47.9 F) |
| 1937 | -38.9 C (-38.0 F) |
| 1938 | -33.3 C (-27.9 F) |
| 1939 | -40.0 C (-40.0 F) |
| 1940 | -37.2 C (-35.0 F) |
| 1941 | -33.9 C (-29.0 F) |
| 1942 | -31.1 C (-24.0 F) |
| 1943 | -40.6 C (-41.1 F) |
| 1944 | -28.9 C (-20.0 F) |
| 1945 | -33.9 C (-29.0 F) |
| 1946 | -30.0 C (-22.0 F) |
| 1947 | -36.7 C (-34.1 F) |
| 1948 | -30.6 C (-23.1 F) |
| 1949 | -33.3 C (-27.9 F) |
| 1950 | -39.4 C (-38.9 F) |
| 1951 | -34.4 C (-29.9 F) |
| 1952 | -36.7 C (-34.1 F) |
| 1953 | -25.0 C (-13.0 F) |
| 1954 | -41.1 C (-42.0 F) |
| 1955 | -32.8 C (-27.0 F) |
| 1956 | -37.2 C (-35.0 F) |
| 1957 | -38.3 C (-36.9 F) |
| 1958 | -31.7 C (-25.1 F) |
| 1959 | -33.3 C (-27.9 F) |
| 1960 | -33.3 C (-27.9 F) |
| 1961 | -35.6 C (-32.1 F) |
| 1962 | -35.6 C (-32.1 F) |
| 1963 | -35.6 C (-32.1 F) |
| 1964 | -33.9 C (-29.0 F) |
| 1965 | -29.4 C (-20.9 F) |
| 1966 | -33.3 C (-27.9 F) |
| 1967 | -31.1 C (-24.0 F) |
| 1968 | -42.2 C (-44.0 F) |
| 1969 | -45.0 C (-49.0 F) |
| 1970 | -37.8 C (-36.0 F) |
| 1971 | -34.4 C (-29.9 F) |
| 1972 | -38.3 C (-36.9 F) |
| 1973 | -29.4 C (-20.9 F) |
| 1974 | -38.3 C (-36.9 F) |
| 1975 | -31.7 C (-25.1 F) |
| 1976 | -31.7 C (-25.1 F) |
| 1977 | -38.3 C (-36.9 F) |
| 1978 | -34.4 C (-29.9 F) |
| 1979 | -36.7 C (-34.1 F) |
| 1980 | -32.8 C (-27.0 F) |
| 1981 | -31.1 C (-24.0 F) |
| 1982 | -36.1 C (-33.0 F) |
| 1983 | -42.2 C (-44.0 F) |
| 1984 | -33.3 C (-27.9 F) |
| 1985 | -35.0 C (-31.0 F) |
| 1986 | -32.8 C (-27.0 F) |
| 1987 | -27.2 C (-17.0 F) |
| 1988 | -32.2 C (-26.0 F) |
| 1989 | -42.2 C (-44.0 F) |
| 1990 | -37.2 C (-35.0 F) |
| 1991 | -33.3 C (-27.9 F) |
| 1992 | -35.0 C (-31.0 F) |
| 1993 | -32.8 C (-27.0 F) |
| 1994 | -38.9 C (-38.0 F) |
| 1995 | -30.0 C (-22.0 F) |
| 1996 | -38.9 C (-38.0 F) |
| 1997 | -37.8 C (-36.0 F) |
| 1998 | -33.9 C (-29.0 F) |
| 1999 | -24.4 C (-11.9 F) |
| 2000 | -32.2 C (-26.0 F) |
| 2001 | -28.9 C (-20.0 F) |
| 2002 | -31.7 C (-25.1 F) |
| 2003 | -31.1 C (-24.0 F) |
| 2004 | -33.3 C (-27.9 F) |
| 2005 | -35.0 C (-31.0 F) |
| 2006 | -29.4 C (-20.9 F) |
| 2007 | -31.7 C (-25.1 F) |
| 2008 | -35.0 C (-31.0 F) |
| 2009 | -35.6 C (-32.1 F) |
| 2010 | -37.2 C (-35.0 F) |
| 2011 | -38.3 C (-36.9 F) |
| 2012 | -31.7 C (-25.1 F) |
| 2013 | -36.1 C (-33.0 F) |
| 2014 | -31.7 C (-25.1 F) |
| 2015 | -28.3 C (-18.9 F) |
| 2016 | -23.9 C (-11.0 F) |
| 2017 | -30.6 C (-23.1 F) |
| 2018 | -36.7 C (-34.1 F) |
| 2019 | -38.9 C (-38.0 F) |
| 2020 | -31.1 C (-24.0 F) |
| 2021 | -36.7 C (-34.1 F) |
| 2022 | -36.1 C (-33.0 F) |
| 2023 | -27.2 C (-17.0 F) |
| 2024 | -40.6 C (-41.1 F) |
| 2025 | -36.7 C (-34.1 F) |
| 2026 | -27.8 C (-18.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1917 | 44.5 mm (1.8 in) |
| 1918 | 20.6 mm (0.8 in) |
| 1919 | 17.5 mm (0.7 in) |
| 1920 | 19.1 mm (0.8 in) |
| 1921 | 32.0 mm (1.3 in) |
| 1922 | 19.8 mm (0.8 in) |
| 1923 | 43.2 mm (1.7 in) |
| 1924 | 44.7 mm (1.8 in) |
| 1925 | 31.5 mm (1.2 in) |
| 1926 | 20.3 mm (0.8 in) |
| 1927 | 29.7 mm (1.2 in) |
| 1928 | 29.0 mm (1.1 in) |
| 1929 | 24.9 mm (1.0 in) |
| 1930 | 15.7 mm (0.6 in) |
| 1931 | 16.0 mm (0.6 in) |
| 1932 | 34.3 mm (1.4 in) |
| 1933 | 56.9 mm (2.2 in) |
| 1934 | 22.9 mm (0.9 in) |
| 1935 | 14.0 mm (0.6 in) |
| 1936 | 18.3 mm (0.7 in) |
| 1937 | 54.1 mm (2.1 in) |
| 1938 | 28.4 mm (1.1 in) |
| 1939 | 21.6 mm (0.9 in) |
| 1940 | 32.0 mm (1.3 in) |
| 1941 | 48.3 mm (1.9 in) |
| 1942 | 25.4 mm (1.0 in) |
| 1943 | 55.4 mm (2.2 in) |
| 1944 | 22.1 mm (0.9 in) |
| 1945 | 23.4 mm (0.9 in) |
| 1946 | 15.0 mm (0.6 in) |
| 1947 | 20.8 mm (0.8 in) |
| 1948 | 34.8 mm (1.4 in) |
| 1949 | 35.1 mm (1.4 in) |
| 1950 | 39.6 mm (1.6 in) |
| 1951 | 26.7 mm (1.1 in) |
| 1952 | 20.6 mm (0.8 in) |
| 1953 | 36.3 mm (1.4 in) |
| 1954 | 40.1 mm (1.6 in) |
| 1955 | 50.8 mm (2.0 in) |
| 1956 | 31.2 mm (1.2 in) |
| 1957 | 27.4 mm (1.1 in) |
| 1958 | 22.9 mm (0.9 in) |
| 1959 | 74.2 mm (2.9 in) |
| 1960 | 24.1 mm (0.9 in) |
| 1961 | 33.3 mm (1.3 in) |
| 1962 | 27.4 mm (1.1 in) |
| 1963 | 19.8 mm (0.8 in) |
| 1964 | 23.6 mm (0.9 in) |
| 1965 | 35.6 mm (1.4 in) |
| 1966 | 19.1 mm (0.8 in) |
| 1967 | 26.4 mm (1.0 in) |
| 1968 | 62.2 mm (2.4 in) |
| 1969 | 30.5 mm (1.2 in) |
| 1970 | 51.1 mm (2.0 in) |
| 1971 | 20.3 mm (0.8 in) |
| 1972 | 32.0 mm (1.3 in) |
| 1973 | 41.1 mm (1.6 in) |
| 1974 | 64.5 mm (2.5 in) |
| 1975 | 48.3 mm (1.9 in) |
| 1976 | 14.7 mm (0.6 in) |
| 1977 | 28.7 mm (1.1 in) |
| 1978 | 51.6 mm (2.0 in) |
| 1979 | 31.0 mm (1.2 in) |
| 1980 | 42.7 mm (1.7 in) |
| 1981 | 31.8 mm (1.3 in) |
| 1982 | 47.8 mm (1.9 in) |
| 1983 | 75.4 mm (3.0 in) |
| 1984 | 10.7 mm (0.4 in) |
| 1985 | 31.5 mm (1.2 in) |
| 1986 | 61.7 mm (2.4 in) |
| 1987 | 31.8 mm (1.3 in) |
| 1988 | 28.4 mm (1.1 in) |
| 1989 | 34.3 mm (1.4 in) |
| 1990 | 22.4 mm (0.9 in) |
| 1991 | 46.0 mm (1.8 in) |
| 1992 | 58.7 mm (2.3 in) |
| 1993 | 31.2 mm (1.2 in) |
| 1994 | 42.7 mm (1.7 in) |
| 1995 | 38.1 mm (1.5 in) |
| 1996 | 33.3 mm (1.3 in) |
| 1997 | 19.1 mm (0.8 in) |
| 1998 | 50.3 mm (2.0 in) |
| 1999 | 39.1 mm (1.5 in) |
| 2000 | 33.8 mm (1.3 in) |
| 2001 | 23.1 mm (0.9 in) |
| 2002 | 39.9 mm (1.6 in) |
| 2003 | 24.1 mm (0.9 in) |
| 2004 | 39.1 mm (1.5 in) |
| 2005 | 27.4 mm (1.1 in) |
| 2006 | 27.7 mm (1.1 in) |
| 2007 | 21.6 mm (0.9 in) |
| 2008 | 25.4 mm (1.0 in) |
| 2009 | 22.1 mm (0.9 in) |
| 2010 | 40.6 mm (1.6 in) |
| 2011 | 22.4 mm (0.9 in) |
| 2012 | 24.4 mm (1.0 in) |
| 2013 | 45.2 mm (1.8 in) |
| 2014 | 44.5 mm (1.8 in) |
| 2015 | 60.5 mm (2.4 in) |
| 2016 | 47.5 mm (1.9 in) |
| 2017 | 24.9 mm (1.0 in) |
| 2018 | 25.7 mm (1.0 in) |
| 2019 | 25.4 mm (1.0 in) |
| 2020 | 23.9 mm (0.9 in) |
| 2021 | 20.8 mm (0.8 in) |
| 2022 | 22.9 mm (0.9 in) |
| 2023 | 40.1 mm (1.6 in) |
| 2024 | 55.1 mm (2.2 in) |
| 2025 | 26.7 mm (1.1 in) |
| 2026 | 30.0 mm (1.2 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1917 | 69.4 mm (2.7 in) |
| 1918 | 23.7 mm (0.9 in) |
| 1919 | 28.2 mm (1.1 in) |
| 1920 | 27.0 mm (1.1 in) |
| 1921 | 46.3 mm (1.8 in) |
| 1922 | 37.8 mm (1.5 in) |
| 1923 | 80.6 mm (3.2 in) |
| 1924 | 90.0 mm (3.5 in) |
| 1925 | 61.2 mm (2.4 in) |
| 1926 | 33.3 mm (1.3 in) |
| 1927 | 72.1 mm (2.8 in) |
| 1928 | 81.3 mm (3.2 in) |
| 1929 | 36.3 mm (1.4 in) |
| 1930 | 27.6 mm (1.1 in) |
| 1931 | 35.3 mm (1.4 in) |
| 1932 | 72.1 mm (2.8 in) |
| 1933 | 118.6 mm (4.7 in) |
| 1934 | 41.8 mm (1.6 in) |
| 1935 | 24.9 mm (1.0 in) |
| 1936 | 22.9 mm (0.9 in) |
| 1937 | 71.6 mm (2.8 in) |
| 1938 | 63.9 mm (2.5 in) |
| 1939 | 45.2 mm (1.8 in) |
| 1940 | 34.8 mm (1.4 in) |
| 1941 | 49.3 mm (1.9 in) |
| 1942 | 37.9 mm (1.5 in) |
| 1943 | 64.8 mm (2.6 in) |
| 1944 | 33.2 mm (1.3 in) |
| 1945 | 39.6 mm (1.6 in) |
| 1946 | 29.8 mm (1.2 in) |
| 1947 | 38.3 mm (1.5 in) |
| 1948 | 46.7 mm (1.8 in) |
| 1949 | 45.1 mm (1.8 in) |
| 1950 | 43.9 mm (1.7 in) |
| 1951 | 40.0 mm (1.6 in) |
| 1952 | 29.2 mm (1.1 in) |
| 1953 | 50.6 mm (2.0 in) |
| 1954 | 46.4 mm (1.8 in) |
| 1955 | 74.9 mm (2.9 in) |
| 1956 | 36.6 mm (1.4 in) |
| 1957 | 37.6 mm (1.5 in) |
| 1958 | 37.0 mm (1.5 in) |
| 1959 | 87.1 mm (3.4 in) |
| 1960 | 30.2 mm (1.2 in) |
| 1961 | 37.1 mm (1.5 in) |
| 1962 | 48.0 mm (1.9 in) |
| 1963 | 23.6 mm (0.9 in) |
| 1964 | 34.5 mm (1.4 in) |
| 1965 | 63.5 mm (2.5 in) |
| 1966 | 35.0 mm (1.4 in) |
| 1967 | 45.7 mm (1.8 in) |
| 1968 | 88.6 mm (3.5 in) |
| 1969 | 57.5 mm (2.3 in) |
| 1970 | 85.6 mm (3.4 in) |
| 1971 | 45.7 mm (1.8 in) |
| 1972 | 36.3 mm (1.4 in) |
| 1973 | 57.2 mm (2.3 in) |
| 1974 | 84.6 mm (3.3 in) |
| 1975 | 98.1 mm (3.9 in) |
| 1976 | 31.3 mm (1.2 in) |
| 1977 | 45.7 mm (1.8 in) |
| 1978 | 65.6 mm (2.6 in) |
| 1979 | 33.1 mm (1.3 in) |
| 1980 | 63.3 mm (2.5 in) |
| 1981 | 54.7 mm (2.2 in) |
| 1982 | 99.8 mm (3.9 in) |
| 1983 | 79.5 mm (3.1 in) |
| 1984 | 22.9 mm (0.9 in) |
| 1985 | 38.3 mm (1.5 in) |
| 1986 | 70.4 mm (2.8 in) |
| 1987 | 41.0 mm (1.6 in) |
| 1988 | 38.9 mm (1.5 in) |
| 1989 | 71.1 mm (2.8 in) |
| 1990 | 32.4 mm (1.3 in) |
| 1991 | 49.0 mm (1.9 in) |
| 1992 | 93.9 mm (3.7 in) |
| 1993 | 47.5 mm (1.9 in) |
| 1994 | 51.4 mm (2.0 in) |
| 1995 | 71.4 mm (2.8 in) |
| 1996 | 39.7 mm (1.6 in) |
| 1997 | 37.1 mm (1.5 in) |
| 1998 | 72.4 mm (2.9 in) |
| 1999 | 58.5 mm (2.3 in) |
| 2000 | 37.1 mm (1.5 in) |
| 2001 | 30.7 mm (1.2 in) |
| 2002 | 86.8 mm (3.4 in) |
| 2003 | 37.0 mm (1.5 in) |
| 2004 | 59.1 mm (2.3 in) |
| 2005 | 52.9 mm (2.1 in) |
| 2006 | 43.1 mm (1.7 in) |
| 2007 | 32.5 mm (1.3 in) |
| 2008 | 55.9 mm (2.2 in) |
| 2009 | 31.0 mm (1.2 in) |
| 2010 | 57.1 mm (2.2 in) |
| 2011 | 48.1 mm (1.9 in) |
| 2012 | 47.7 mm (1.9 in) |
| 2013 | 147.9 mm (5.8 in) |
| 2014 | 77.3 mm (3.0 in) |
| 2015 | 73.9 mm (2.9 in) |
| 2016 | 67.1 mm (2.6 in) |
| 2017 | 31.3 mm (1.2 in) |
| 2018 | 35.9 mm (1.4 in) |
| 2019 | 45.0 mm (1.8 in) |
| 2020 | 28.0 mm (1.1 in) |
| 2021 | 37.6 mm (1.5 in) |
| 2022 | 49.5 mm (1.9 in) |
| 2023 | 53.6 mm (2.1 in) |
| 2024 | 88.9 mm (3.5 in) |
| 2025 | 50.3 mm (2.0 in) |
| 2026 | 81.9 mm (3.2 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1917 | 39 days |
| 1918 | 30 days |
| 1919 | 28 days |
| 1920 | 54 days |
| 1921 | 30 days |
| 1922 | 30 days |
| 1923 | 61 days |
| 1924 | 23 days |
| 1925 | 53 days |
| 1926 | 86 days |
| 1927 | 26 days |
| 1928 | 76 days |
| 1929 | 29 days |
| 1930 | 35 days |
| 1931 | 53 days |
| 1932 | 36 days |
| 1933 | 28 days |
| 1934 | 53 days |
| 1935 | 27 days |
| 1936 | 34 days |
| 1937 | 39 days |
| 1938 | 26 days |
| 1939 | 39 days |
| 1940 | 34 days |
| 1941 | 35 days |
| 1942 | 33 days |
| 1943 | 64 days |
| 1944 | 34 days |
| 1945 | 37 days |
| 1946 | 54 days |
| 1947 | 42 days |
| 1948 | 29 days |
| 1949 | 41 days |
| 1950 | 29 days |
| 1951 | 31 days |
| 1952 | 48 days |
| 1953 | 57 days |
| 1954 | 51 days |
| 1955 | 59 days |
| 1956 | 42 days |
| 1957 | 45 days |
| 1958 | 22 days |
| 1959 | 55 days |
| 1960 | 49 days |
| 1961 | 33 days |
| 1962 | 41 days |
| 1963 | 44 days |
| 1964 | 60 days |
| 1965 | 28 days |
| 1966 | 38 days |
| 1967 | 80 days |
| 1968 | 44 days |
| 1969 | 71 days |
| 1970 | 43 days |
| 1971 | 49 days |
| 1972 | 33 days |
| 1973 | 44 days |
| 1974 | 77 days |
| 1975 | 28 days |
| 1976 | 50 days |
| 1977 | 48 days |
| 1978 | 39 days |
| 1979 | 32 days |
| 1980 | 42 days |
| 1981 | 45 days |
| 1982 | 26 days |
| 1983 | 28 days |
| 1984 | 37 days |
| 1985 | 27 days |
| 1986 | 32 days |
| 1987 | 50 days |
| 1988 | 66 days |
| 1989 | 23 days |
| 1990 | 39 days |
| 1991 | 39 days |
| 1992 | 27 days |
| 1993 | 28 days |
| 1994 | 40 days |
| 1995 | 46 days |
| 1996 | 29 days |
| 1997 | 39 days |
| 1998 | 29 days |
| 1999 | 34 days |
| 2000 | 34 days |
| 2001 | 37 days |
| 2002 | 47 days |
| 2003 | 52 days |
| 2004 | 25 days |
| 2005 | 53 days |
| 2006 | 37 days |
| 2007 | 50 days |
| 2008 | 41 days |
| 2009 | 40 days |
| 2010 | 21 days |
| 2011 | 24 days |
| 2012 | 27 days |
| 2013 | 23 days |
| 2014 | 32 days |
| 2015 | 33 days |
| 2016 | 50 days |
| 2017 | 43 days |
| 2018 | 35 days |
| 2019 | 22 days |
| 2020 | 52 days |
| 2021 | 34 days |
| 2022 | 39 days |
| 2023 | 31 days |
| 2024 | 44 days |
| 2025 | 29 days |
| 2026 | 49 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
102 years with a frostAcross 102 years with a frost, the median last spring frost at Ft Assiniboine falls on 15 May and the median first autumn frost on 21 September, which leaves a median of 130 days between them.
In 1992 to 2025 the median growing season was 134 days. That is 1 day more than in 1917 to 1946.
Fitted over all years, the growing season changes by +0.9 days per decade at this station.
| Measure | Median, all years | Earliest period (1917 to 1946) | Recent period (1992 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 15 May | 15 May | 14 May | 1 day earlier | -0.1 days per decade |
| First autumn frost | 21 September | 20 September | 28 September | 8 days later | +0.8 days per decade |
| Growing days | 130 days | 133 days | 134 days | 1 day more | +0.9 days per decade |
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
105 years, 1917 to 2025A day with at least 30.7 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 81.0 mm (3.2 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 30.7 mm (1.2 in) | |
| 5 years | 43.0 mm (1.7 in) | |
| 10 years | 51.7 mm (2.0 in) | |
| 25 years | 63.0 mm (2.5 in) | |
| 50 years | 71.9 mm (2.8 in) | |
| 100 years | 81.0 mm (3.2 in) |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 105 years of values from 1917 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: 75.4 mm (3.0 in) in 1983; 74.2 mm (2.9 in) in 1959; 64.5 mm (2.5 in) in 1974.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Ft Assiniboine, at 1937. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1937 ran 0.3 C (0.5 F) lower than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1937 | -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, Ft Assiniboine had a mean temperature of 6.1 C (43.0 F) and 318.6 mm (12.5 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Carlyle 13 NW (United States, 455 km away), Ralph 1 N (United States, 592 km away) and Redig 11 NE (United States, 599 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Carlyle 13 NW | United States | 455 km (283 mi) | 6.3 C (43.3 F) | 386.4 mm (15.2 in) | 1.25 |
| Ralph 1 N | United States | 592 km (368 mi) | 6.2 C (43.2 F) | 402.2 mm (15.8 in) | 1.30 |
| Redig 11 NE | United States | 599 km (372 mi) | 6.6 C (43.8 F) | 386.3 mm (15.2 in) | 1.32 |
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.
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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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-12).