Denison Weather Records (USC00132171)
Record envelope, standing records and threshold days for Denison (USC00132171), Iowa, United States, with 134 years of record.
Key Facts for Denison
- Denison (USC00132171) is a weather station in Iowa, United States at 42.04 latitude and -95.33 longitude, 427 m (1,401 ft) above sea level.
- The station reports from 1893 to 2026, 134 years of record.
- 1,464 records set at Denison still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Denison set a daily record snowfall of 19.3 cm (7.6 in) on 20 March 2025.
About the Station
- Location: Iowa, United States, 42.04 latitude, -95.33 longitude.
- Elevation: 427 m (1,401 ft).
- Period of record: 1893 to 2026, 134 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
4 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) | -40.0 C (-40.0 F) | 15.6 C (60.1 F) | -26.7 C (-16.1 F) |
| Feb | 24.4 C (75.9 F) | -38.3 C (-36.9 F) | 13.9 C (57.0 F) | -26.1 C (-15.0 F) |
| Mar | 31.1 C (88.0 F) | -30.6 C (-23.1 F) | 28.9 C (84.0 F) | -10.0 C (14.0 F) |
| Apr | 35.0 C (95.0 F) | -15.0 C (5.0 F) | n/a | n/a |
| May | 40.6 C (105.1 F) | -8.3 C (17.1 F) | n/a | n/a |
| Jun | 42.8 C (109.0 F) | -0.6 C (30.9 F) | n/a | n/a |
| Jul | 44.4 C (111.9 F) | 3.9 C (39.0 F) | n/a | n/a |
| Aug | 43.9 C (111.0 F) | 1.1 C (34.0 F) | n/a | n/a |
| Sep | 39.4 C (102.9 F) | -7.8 C (18.0 F) | n/a | n/a |
| Oct | 33.3 C (91.9 F) | -18.3 C (-0.9 F) | n/a | n/a |
| Nov | 26.7 C (80.1 F) | -26.7 C (-16.1 F) | n/a | n/a |
| Dec | 21.1 C (70.0 F) | -32.2 C (-26.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1893 | 2 |
| 1894 | 3 |
| 1895 | 26 |
| 1896 | 16 |
| 1897 | 17 |
| 1898 | 8 |
| 1899 | 19 |
| 1900 | 12 |
| 1901 | 17 |
| 1902 | 14 |
| 1903 | 10 |
| 1904 | 9 |
| 1905 | 19 |
| 1906 | 10 |
| 1907 | 18 |
| 1908 | 8 |
| 1909 | 17 |
| 1910 | 17 |
| 1911 | 20 |
| 1912 | 19 |
| 1913 | 21 |
| 1914 | 11 |
| 1915 | 18 |
| 1916 | 15 |
| 1917 | 4 |
| 1918 | 19 |
| 1919 | 12 |
| 1920 | 8 |
| 1921 | 15 |
| 1922 | 8 |
| 1923 | 10 |
| 1924 | 16 |
| 1925 | 16 |
| 1926 | 8 |
| 1927 | 7 |
| 1928 | 10 |
| 1929 | 6 |
| 1930 | 37 |
| 1931 | 15 |
| 1932 | 8 |
| 1933 | 18 |
| 1934 | 34 |
| 1935 | 17 |
| 1936 | 49 |
| 1937 | 28 |
| 1938 | 10 |
| 1939 | 17 |
| 1940 | 13 |
| 1941 | 9 |
| 1942 | 10 |
| 1943 | 7 |
| 1944 | 15 |
| 1945 | 12 |
| 1946 | 10 |
| 1947 | 12 |
| 1948 | 12 |
| 1949 | 5 |
| 1950 | 11 |
| 1951 | 8 |
| 1952 | 4 |
| 1953 | 6 |
| 1954 | 3 |
| 1955 | 17 |
| 1956 | 6 |
| 1957 | 4 |
| 1958 | 9 |
| 1959 | 12 |
| 1960 | 9 |
| 1961 | 6 |
| 1962 | 17 |
| 1963 | 12 |
| 1964 | 8 |
| 1965 | 11 |
| 1966 | 11 |
| 1967 | 11 |
| 1968 | 7 |
| 1969 | 6 |
| 1970 | 6 |
| 1971 | 5 |
| 1972 | 5 |
| 1973 | 5 |
| 1974 | 8 |
| 1975 | 5 |
| 1976 | 8 |
| 1977 | 6 |
| 1978 | 8 |
| 1979 | 5 |
| 1980 | 5 |
| 1981 | 8 |
| 1982 | 3 |
| 1983 | 19 |
| 1984 | 7 |
| 1985 | 5 |
| 1986 | 11 |
| 1987 | 16 |
| 1988 | 6 |
| 1989 | 14 |
| 1990 | 9 |
| 1991 | 17 |
| 1992 | 9 |
| 1993 | 3 |
| 1994 | 4 |
| 1995 | 9 |
| 1996 | 10 |
| 1997 | 12 |
| 1998 | 14 |
| 1999 | 7 |
| 2000 | 12 |
| 2001 | 11 |
| 2002 | 9 |
| 2003 | 7 |
| 2004 | 8 |
| 2005 | 8 |
| 2006 | 8 |
| 2007 | 7 |
| 2008 | 4 |
| 2009 | 4 |
| 2010 | 3 |
| 2011 | 4 |
| 2012 | 12 |
| 2013 | 10 |
| 2014 | 12 |
| 2015 | 4 |
| 2016 | 4 |
| 2017 | 9 |
| 2018 | 14 |
| 2019 | 9 |
| 2020 | 14 |
| 2021 | 10 |
| 2022 | 12 |
| 2023 | 9 |
| 2024 | 6 |
| 2025 | 4 |
All-Time Record Progression
7 new records| Date | Kind | Detail |
|---|---|---|
| 1930-07-18 | Record high maximum temperature | Record high maximum temperature 41.7 C (107.1 F) |
| 1930-08-03 | Record high maximum temperature | Record high maximum temperature 43.9 C (111.0 F) |
| 1932-01-06 | Record snow depth | Record snow depth 355.6 cm (140.0 in) |
| 1936-07-14 | Record high maximum temperature | Record high maximum temperature 44.4 C (111.9 F) |
| 1945-04-04 | Record daily snowfall | Record daily snowfall 35.6 cm (14.0 in) |
| 1987-03-29 | Record daily snowfall | Record daily snowfall 38.1 cm (15.0 in) |
| 1993-07-09 | Record daily precipitation | Record daily precipitation 200.4 mm (7.9 in) |
Wettest Day of Each Month
Jul: 200.4 mm (7.9 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 31.5 mm (1.2 in) | 8 January 1937 |
| Feb | 57.4 mm (2.3 in) | 20 February 1954 |
| Mar | 82.0 mm (3.2 in) | 24 March 1906 |
| Apr | 86.4 mm (3.4 in) | 7 April 1998 |
| May | 112.3 mm (4.4 in) | 6 May 2007 |
| Jun | 134.9 mm (5.3 in) | 8 June 2008 |
| Jul | 200.4 mm (7.9 in) | 9 July 1993 |
| Aug | 196.9 mm (7.8 in) | 29 August 1907 |
| Sep | 147.6 mm (5.8 in) | 11 September 1972 |
| Oct | 111.5 mm (4.4 in) | 12 October 1928 |
| Nov | 71.1 mm (2.8 in) | 9 November 1977 |
| Dec | 87.6 mm (3.4 in) | 14 December 2015 |
Period of Record Coverage
1893 to 2025| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1893 | 153 | 42% | No |
| 1894 | 28 | 8% | No |
| 1895 | 324 | 89% | No |
| 1896 | 343 | 94% | Yes |
| 1897 | 352 | 96% | Yes |
| 1898 | 256 | 70% | No |
| 1899 | 349 | 96% | Yes |
| 1900 | 356 | 98% | Yes |
| 1901 | 360 | 99% | Yes |
| 1902 | 360 | 99% | Yes |
| 1903 | 345 | 95% | Yes |
| 1904 | 351 | 96% | Yes |
| 1905 | 354 | 97% | Yes |
| 1906 | 364 | 100% | Yes |
| 1907 | 355 | 97% | Yes |
| 1908 | 353 | 96% | Yes |
| 1909 | 353 | 97% | Yes |
| 1910 | 360 | 99% | Yes |
| 1911 | 355 | 97% | Yes |
| 1912 | 354 | 97% | Yes |
| 1913 | 362 | 99% | Yes |
| 1914 | 349 | 96% | Yes |
| 1915 | 359 | 98% | Yes |
| 1916 | 360 | 98% | Yes |
| 1917 | 182 | 50% | No |
| 1918 | 345 | 95% | Yes |
| 1919 | 358 | 98% | Yes |
| 1920 | 353 | 96% | Yes |
| 1921 | 363 | 99% | Yes |
| 1922 | 365 | 100% | Yes |
| 1923 | 364 | 100% | Yes |
| 1924 | 366 | 100% | Yes |
| 1925 | 365 | 100% | Yes |
| 1926 | 365 | 100% | Yes |
| 1927 | 364 | 100% | Yes |
| 1928 | 366 | 100% | Yes |
| 1929 | 365 | 100% | Yes |
| 1930 | 363 | 99% | Yes |
| 1931 | 363 | 99% | Yes |
| 1932 | 364 | 99% | Yes |
| 1933 | 363 | 99% | Yes |
| 1934 | 362 | 99% | Yes |
| 1935 | 365 | 100% | Yes |
| 1936 | 366 | 100% | Yes |
| 1937 | 362 | 99% | Yes |
| 1938 | 363 | 99% | Yes |
| 1939 | 363 | 99% | Yes |
| 1940 | 364 | 99% | Yes |
| 1941 | 365 | 100% | Yes |
| 1942 | 365 | 100% | Yes |
| 1943 | 365 | 100% | Yes |
| 1944 | 365 | 100% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 351 | 96% | Yes |
| 1947 | 361 | 99% | Yes |
| 1948 | 366 | 100% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 364 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 304 | 83% | No |
| 1964 | 335 | 92% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 362 | 99% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 364 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 364 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 364 | 100% | Yes |
| 1978 | 363 | 99% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 362 | 99% | Yes |
| 1981 | 363 | 99% | Yes |
| 1982 | 269 | 74% | No |
| 1983 | 357 | 98% | Yes |
| 1984 | 365 | 100% | Yes |
| 1985 | 364 | 100% | Yes |
| 1986 | 362 | 99% | Yes |
| 1987 | 361 | 99% | Yes |
| 1988 | 363 | 99% | Yes |
| 1989 | 364 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 364 | 99% | Yes |
| 1993 | 363 | 99% | Yes |
| 1994 | 364 | 100% | Yes |
| 1995 | 365 | 100% | Yes |
| 1996 | 365 | 100% | Yes |
| 1997 | 363 | 99% | Yes |
| 1998 | 365 | 100% | Yes |
| 1999 | 365 | 100% | Yes |
| 2000 | 366 | 100% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 364 | 100% | Yes |
| 2003 | 364 | 100% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 364 | 99% | Yes |
| 2009 | 365 | 100% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 365 | 100% | Yes |
| 2014 | 364 | 100% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 366 | 100% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 90 | 25% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 20 March 2025 | Denison, US | daily snowfall | 19.3 cm (7.6 in) | 7.9 cm (3.1 in) | 40 years | 35 of 100 (Notable) |
| 5 March 2025 | Denison, US | daily rain | 21.8 mm (0.9 in) | 3.5 mm (0.14 in) | 20 years | 20 of 100 (Routine) |
| 21 February 2025 | Denison, US | daily low min (Tie) | -26.1 C (-15.0 F) | tie | 107 years | 10 of 100 (Routine) |
| 20 February 2025 | Denison, US | daily low max | -15.6 C (3.9 F) | 1.2 C (2.2 F) | 107 years | 41 of 100 (Notable) |
| 20 February 2025 | Denison, US | daily low min (Tie) | -25.0 C (-13.0 F) | tie | 107 years | 10 of 100 (Routine) |
| 19 February 2025 | Denison, US | daily low max | -17.2 C (1.0 F) | 0.5 C (0.9 F) | 96 years | 38 of 100 (Notable) |
| 18 February 2025 | Denison, US | daily low min | -26.1 C (-15.0 F) | 0.5 C (0.9 F) | 89 years | 36 of 100 (Notable) |
| 16 February 2025 | Denison, US | daily snowfall | 5.6 cm (2.2 in) | 0.3 cm (0.1 in) | 1 year | 10 of 100 (Routine) |
| 31 January 2025 | Denison, US | daily high max | 15.6 C (60.1 F) | 0.6 C (1.1 F) | 36 years | 20 of 100 (Routine) |
| 17 October 2024 | Denison, US | daily low min (Tie) | -6.7 C (19.9 F) | tie | 102 years | 10 of 100 (Routine) |
| 6 October 2024 | Denison, US | daily high max (Tie) | 32.2 C (90.0 F) | tie | 61 years | 7 of 100 (Routine) |
| 20 September 2024 | Denison, US | daily high min (Tie) | 22.2 C (72.0 F) | tie | 128 years | 10 of 100 (Routine) |
| 10 August 2024 | Denison, US | daily low min | 7.2 C (45.0 F) | 0.6 C (1.1 F) | 114 years | 41 of 100 (Notable) |
| 12 June 2024 | Denison, US | daily high min | 25.0 C (77.0 F) | 1.7 C (3.1 F) | 34 years | 24 of 100 (Routine) |
| 26 April 2024 | Denison, US | daily rain | 47.8 mm (1.9 in) | 10.5 mm (0.4 in) | 61 years | 39 of 100 (Notable) |
| 25 March 2024 | Denison, US | daily rain | 32.0 mm (1.3 in) | 7.4 mm (0.29 in) | 7 years | 21 of 100 (Routine) |
| 27 February 2024 | Denison, US | monthly high max | 24.4 C (75.9 F) | 3.3 C (5.9 F) | 128 years | 54 of 100 (Notable) |
| 16 February 2024 | Denison, US | daily snowfall | 5.3 cm (2.1 in) | 0.2 cm (0.1 in) | 33 years | 20 of 100 (Routine) |
| 8 February 2024 | Denison, US | daily high min | 5.6 C (42.1 F) | 2.8 C (5.0 F) | 85 years | 38 of 100 (Notable) |
| 16 January 2024 | Denison, US | daily low max | -20.6 C (-5.1 F) | 1.7 C (3.1 F) | 93 years | 40 of 100 (Notable) |
Climate Trend
121 complete years, 1897 to 2024| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1897 | 8.6 C | -0.46 C |
| 1899 | 7.9 C | -1.21 C |
| 1900 | 9.6 C | +0.52 C |
| 1901 | 9.0 C | -0.10 C |
| 1902 | 8.2 C | -0.90 C |
| 1904 | 8.1 C | -1.04 C |
| 1905 | 8.4 C | -0.74 C |
| 1906 | 9.1 C | +0.04 C |
| 1907 | 8.5 C | -0.56 C |
| 1908 | 9.6 C | +0.49 C |
| 1909 | 8.2 C | -0.93 C |
| 1910 | 9.2 C | +0.10 C |
| 1911 | 9.5 C | +0.40 C |
| 1912 | 7.9 C | -1.19 C |
| 1913 | 9.7 C | +0.58 C |
| 1915 | 8.8 C | -0.28 C |
| 1916 | 8.5 C | -0.61 C |
| 1918 | 10.2 C | +1.05 C |
| 1919 | 9.4 C | +0.26 C |
| 1920 | 9.3 C | +0.22 C |
| 1921 | 11.4 C | +2.29 C |
| 1922 | 10.1 C | +1.02 C |
| 1923 | 9.4 C | +0.25 C |
| 1924 | 7.7 C | -1.38 C |
| 1925 | 9.3 C | +0.18 C |
| 1926 | 9.3 C | +0.15 C |
| 1927 | 9.3 C | +0.17 C |
| 1928 | 9.7 C | +0.56 C |
| 1929 | 7.8 C | -1.32 C |
| 1930 | 10.3 C | +1.22 C |
| 1931 | 12.0 C | +2.88 C |
| 1932 | 8.9 C | -0.24 C |
| 1933 | 10.6 C | +1.53 C |
| 1934 | 10.8 C | +1.67 C |
| 1935 | 9.4 C | +0.30 C |
| 1936 | 9.3 C | +0.22 C |
| 1937 | 8.5 C | -0.64 C |
| 1938 | 10.5 C | +1.42 C |
| 1939 | 10.6 C | +1.49 C |
| 1940 | 8.5 C | -0.57 C |
| 1941 | 10.2 C | +1.13 C |
| 1942 | 9.0 C | -0.06 C |
| 1943 | 8.7 C | -0.42 C |
| 1944 | 9.2 C | +0.13 C |
| 1945 | 8.3 C | -0.81 C |
| 1946 | 10.1 C | +0.97 C |
| 1947 | 9.0 C | -0.09 C |
| 1948 | 9.0 C | -0.10 C |
| 1949 | 9.3 C | +0.15 C |
| 1950 | 7.4 C | -1.72 C |
| 1951 | 7.2 C | -1.90 C |
| 1952 | 8.9 C | -0.23 C |
| 1953 | 9.8 C | +0.69 C |
| 1954 | 9.8 C | +0.71 C |
| 1955 | 9.2 C | +0.07 C |
| 1956 | 9.3 C | +0.22 C |
| 1957 | 8.9 C | -0.18 C |
| 1958 | 8.7 C | -0.44 C |
| 1959 | 8.7 C | -0.39 C |
| 1960 | 8.0 C | -1.08 C |
| 1961 | 8.5 C | -0.63 C |
| 1962 | 8.6 C | -0.47 C |
| 1965 | 8.7 C | -0.41 C |
| 1966 | 8.6 C | -0.48 C |
| 1967 | 9.0 C | -0.12 C |
| 1968 | 9.1 C | +0.03 C |
| 1969 | 8.2 C | -0.93 C |
| 1970 | 8.8 C | -0.26 C |
| 1971 | 9.2 C | +0.06 C |
| 1972 | 8.0 C | -1.09 C |
| 1973 | 9.7 C | +0.58 C |
| 1974 | 9.5 C | +0.35 C |
| 1975 | 8.8 C | -0.27 C |
| 1976 | 9.7 C | +0.64 C |
| 1977 | 9.9 C | +0.84 C |
| 1978 | 7.4 C | -1.75 C |
| 1979 | 7.6 C | -1.55 C |
| 1980 | 9.4 C | +0.27 C |
| 1981 | 9.9 C | +0.76 C |
| 1983 | 8.1 C | -0.98 C |
| 1984 | 9.5 C | +0.35 C |
| 1985 | 8.7 C | -0.45 C |
| 1986 | 10.3 C | +1.19 C |
| 1987 | 11.8 C | +2.73 C |
| 1988 | 10.1 C | +0.99 C |
| 1989 | 8.7 C | -0.40 C |
| 1990 | 10.1 C | +0.97 C |
| 1991 | 9.3 C | +0.24 C |
| 1992 | 9.3 C | +0.22 C |
| 1993 | 7.5 C | -1.62 C |
| 1994 | 8.7 C | -0.40 C |
| 1995 | 8.9 C | -0.18 C |
| 1996 | 7.1 C | -1.99 C |
| 1997 | 8.4 C | -0.75 C |
| 1998 | 10.2 C | +1.14 C |
| 1999 | 9.6 C | +0.52 C |
| 2000 | 9.3 C | +0.22 C |
| 2001 | 9.4 C | +0.27 C |
| 2002 | 9.3 C | +0.18 C |
| 2003 | 8.8 C | -0.26 C |
| 2004 | 9.1 C | +0.00 C |
| 2005 | 9.9 C | +0.76 C |
| 2006 | 10.1 C | +0.98 C |
| 2007 | 9.2 C | +0.11 C |
| 2008 | 8.4 C | -0.75 C |
| 2009 | 8.7 C | -0.45 C |
| 2010 | 8.5 C | -0.63 C |
| 2011 | 8.0 C | -1.15 C |
| 2012 | 10.3 C | +1.24 C |
| 2013 | 7.2 C | -1.88 C |
| 2014 | 7.2 C | -1.88 C |
| 2015 | 9.4 C | +0.27 C |
| 2016 | 9.8 C | +0.67 C |
| 2017 | 9.5 C | +0.36 C |
| 2018 | 8.0 C | -1.08 C |
| 2019 | 7.8 C | -1.27 C |
| 2020 | 9.6 C | +0.47 C |
| 2021 | 10.0 C | +0.88 C |
| 2022 | 8.6 C | -0.54 C |
| 2023 | 10.2 C | +1.05 C |
| 2024 | 10.6 C | +1.54 C |
The fitted trend in annual mean temperature here over 1897 to 2024 is -0.01 C (-0.05 to 0.04) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.01 F (-0.09 to 0.07) per decade. The slope is a straight line fitted to 121 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.01 C (-0.05 to 0.04) per decade | -0.01 F (-0.09 to 0.07) per decade | 1897 to 2024 | 121 | Not clearly different from zero |
| Mean daily maximum | -0.06 C (-0.12 to -0.01) per decade | -0.11 F (-0.21 to -0.01) per decade | 1897 to 2024 | 121 | Fall |
| Mean daily minimum | 0.05 C (0.01 to 0.09) per decade | 0.09 F (0.01 to 0.17) per decade | 1897 to 2024 | 121 | 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
1893 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 44.4 C (111.9 F) | 1936 | 36.1 C (97.0 F) | 133 |
| Coldest night (TNn) | -40.0 C (-40.0 F) | 1912 | -28.3 C (-18.9 F) | 133 |
| Wettest day (Rx1day) | 200.4 mm (7.9 in) | 1993 | 59.5 mm (2.3 in) | 134 |
| Wettest five days (Rx5day) | 245.7 mm (9.7 in) | 1972 | 94.7 mm (3.7 in) | 133 |
| Longest dry spell (CDD) | 71 days | 1917 | 27 days | 134 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1893 | 25.0 C (77.0 F) |
| 1894 | 11.1 C (52.0 F) |
| 1895 | 37.2 C (99.0 F) |
| 1896 | 38.3 C (100.9 F) |
| 1897 | 35.6 C (96.1 F) |
| 1898 | 32.8 C (91.0 F) |
| 1899 | 36.7 C (98.1 F) |
| 1900 | 36.1 C (97.0 F) |
| 1901 | 41.1 C (106.0 F) |
| 1902 | 33.9 C (93.0 F) |
| 1903 | 31.1 C (88.0 F) |
| 1904 | 33.3 C (91.9 F) |
| 1905 | 36.1 C (97.0 F) |
| 1906 | 36.1 C (97.0 F) |
| 1907 | 35.6 C (96.1 F) |
| 1908 | 35.0 C (95.0 F) |
| 1909 | 34.4 C (93.9 F) |
| 1910 | 36.1 C (97.0 F) |
| 1911 | 41.1 C (106.0 F) |
| 1912 | 37.2 C (99.0 F) |
| 1913 | 37.8 C (100.0 F) |
| 1914 | 36.7 C (98.1 F) |
| 1915 | 34.4 C (93.9 F) |
| 1916 | 36.7 C (98.1 F) |
| 1917 | 34.4 C (93.9 F) |
| 1918 | 40.0 C (104.0 F) |
| 1919 | 36.1 C (97.0 F) |
| 1920 | 33.9 C (93.0 F) |
| 1921 | 36.1 C (97.0 F) |
| 1922 | 36.1 C (97.0 F) |
| 1923 | 35.6 C (96.1 F) |
| 1924 | 33.3 C (91.9 F) |
| 1925 | 37.8 C (100.0 F) |
| 1926 | 37.8 C (100.0 F) |
| 1927 | 37.2 C (99.0 F) |
| 1928 | 35.0 C (95.0 F) |
| 1929 | 35.0 C (95.0 F) |
| 1930 | 43.9 C (111.0 F) |
| 1931 | 38.3 C (100.9 F) |
| 1932 | 37.8 C (100.0 F) |
| 1933 | 42.8 C (109.0 F) |
| 1934 | 43.9 C (111.0 F) |
| 1935 | 41.1 C (106.0 F) |
| 1936 | 44.4 C (111.9 F) |
| 1937 | 40.0 C (104.0 F) |
| 1938 | 38.3 C (100.9 F) |
| 1939 | 39.4 C (102.9 F) |
| 1940 | 39.4 C (102.9 F) |
| 1941 | 40.0 C (104.0 F) |
| 1942 | 36.1 C (97.0 F) |
| 1943 | 36.1 C (97.0 F) |
| 1944 | 36.7 C (98.1 F) |
| 1945 | 35.6 C (96.1 F) |
| 1946 | 38.9 C (102.0 F) |
| 1947 | 37.8 C (100.0 F) |
| 1948 | 37.8 C (100.0 F) |
| 1949 | 35.6 C (96.1 F) |
| 1950 | 33.9 C (93.0 F) |
| 1951 | 33.9 C (93.0 F) |
| 1952 | 35.6 C (96.1 F) |
| 1953 | 36.1 C (97.0 F) |
| 1954 | 38.9 C (102.0 F) |
| 1955 | 40.6 C (105.1 F) |
| 1956 | 38.9 C (102.0 F) |
| 1957 | 36.7 C (98.1 F) |
| 1958 | 33.9 C (93.0 F) |
| 1959 | 35.0 C (95.0 F) |
| 1960 | 34.4 C (93.9 F) |
| 1961 | 33.9 C (93.0 F) |
| 1962 | 33.3 C (91.9 F) |
| 1963 | 35.6 C (96.1 F) |
| 1964 | 36.7 C (98.1 F) |
| 1965 | 34.4 C (93.9 F) |
| 1966 | 35.6 C (96.1 F) |
| 1967 | 37.2 C (99.0 F) |
| 1968 | 34.4 C (93.9 F) |
| 1969 | 34.4 C (93.9 F) |
| 1970 | 36.1 C (97.0 F) |
| 1971 | 35.6 C (96.1 F) |
| 1972 | 35.0 C (95.0 F) |
| 1973 | 33.9 C (93.0 F) |
| 1974 | 40.6 C (105.1 F) |
| 1975 | 35.0 C (95.0 F) |
| 1976 | 37.8 C (100.0 F) |
| 1977 | 37.8 C (100.0 F) |
| 1978 | 33.3 C (91.9 F) |
| 1979 | 33.3 C (91.9 F) |
| 1980 | 37.2 C (99.0 F) |
| 1981 | 35.0 C (95.0 F) |
| 1982 | 32.2 C (90.0 F) |
| 1983 | 37.8 C (100.0 F) |
| 1984 | 37.8 C (100.0 F) |
| 1985 | 37.2 C (99.0 F) |
| 1986 | 33.9 C (93.0 F) |
| 1987 | 36.7 C (98.1 F) |
| 1988 | 38.3 C (100.9 F) |
| 1989 | 35.6 C (96.1 F) |
| 1990 | 36.7 C (98.1 F) |
| 1991 | 33.9 C (93.0 F) |
| 1992 | 32.2 C (90.0 F) |
| 1993 | 31.7 C (89.1 F) |
| 1994 | 32.8 C (91.0 F) |
| 1995 | 37.8 C (100.0 F) |
| 1996 | 33.3 C (91.9 F) |
| 1997 | 36.7 C (98.1 F) |
| 1998 | 35.6 C (96.1 F) |
| 1999 | 35.6 C (96.1 F) |
| 2000 | 38.9 C (102.0 F) |
| 2001 | 35.0 C (95.0 F) |
| 2002 | 36.7 C (98.1 F) |
| 2003 | 37.8 C (100.0 F) |
| 2004 | 33.3 C (91.9 F) |
| 2005 | 35.6 C (96.1 F) |
| 2006 | 35.6 C (96.1 F) |
| 2007 | 35.6 C (96.1 F) |
| 2008 | 35.0 C (95.0 F) |
| 2009 | 33.9 C (93.0 F) |
| 2010 | 34.4 C (93.9 F) |
| 2011 | 34.4 C (93.9 F) |
| 2012 | 38.3 C (100.9 F) |
| 2013 | 36.7 C (98.1 F) |
| 2014 | 32.2 C (90.0 F) |
| 2015 | 33.9 C (93.0 F) |
| 2016 | 35.0 C (95.0 F) |
| 2017 | 36.1 C (97.0 F) |
| 2018 | 37.8 C (100.0 F) |
| 2019 | 35.0 C (95.0 F) |
| 2020 | 36.1 C (97.0 F) |
| 2021 | 37.8 C (100.0 F) |
| 2022 | 37.2 C (99.0 F) |
| 2023 | 37.8 C (100.0 F) |
| 2024 | 35.6 C (96.1 F) |
| 2025 | 28.9 C (84.0 F) |
| 2026 | n/a |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1893 | -28.3 C (-18.9 F) |
| 1894 | -33.3 C (-27.9 F) |
| 1895 | -31.7 C (-25.1 F) |
| 1896 | -23.9 C (-11.0 F) |
| 1897 | -28.3 C (-18.9 F) |
| 1898 | -27.8 C (-18.0 F) |
| 1899 | -35.0 C (-31.0 F) |
| 1900 | -32.8 C (-27.0 F) |
| 1901 | -29.4 C (-20.9 F) |
| 1902 | -32.8 C (-27.0 F) |
| 1903 | -25.0 C (-13.0 F) |
| 1904 | -30.6 C (-23.1 F) |
| 1905 | -38.3 C (-36.9 F) |
| 1906 | -30.0 C (-22.0 F) |
| 1907 | -31.7 C (-25.1 F) |
| 1908 | -23.9 C (-11.0 F) |
| 1909 | -27.8 C (-18.0 F) |
| 1910 | -32.2 C (-26.0 F) |
| 1911 | -31.7 C (-25.1 F) |
| 1912 | -40.0 C (-40.0 F) |
| 1913 | -28.9 C (-20.0 F) |
| 1914 | -29.4 C (-20.9 F) |
| 1915 | -33.3 C (-27.9 F) |
| 1916 | -31.1 C (-24.0 F) |
| 1917 | -32.2 C (-26.0 F) |
| 1918 | -33.9 C (-29.0 F) |
| 1919 | -30.6 C (-23.1 F) |
| 1920 | -25.0 C (-13.0 F) |
| 1921 | -23.9 C (-11.0 F) |
| 1922 | -24.4 C (-11.9 F) |
| 1923 | -25.0 C (-13.0 F) |
| 1924 | -34.4 C (-29.9 F) |
| 1925 | -25.0 C (-13.0 F) |
| 1926 | -23.9 C (-11.0 F) |
| 1927 | -26.1 C (-15.0 F) |
| 1928 | -24.4 C (-11.9 F) |
| 1929 | -28.3 C (-18.9 F) |
| 1930 | -28.3 C (-18.9 F) |
| 1931 | -21.1 C (-6.0 F) |
| 1932 | -30.0 C (-22.0 F) |
| 1933 | -31.7 C (-25.1 F) |
| 1934 | -25.0 C (-13.0 F) |
| 1935 | -27.8 C (-18.0 F) |
| 1936 | -31.7 C (-25.1 F) |
| 1937 | -28.9 C (-20.0 F) |
| 1938 | -26.7 C (-16.1 F) |
| 1939 | -27.8 C (-18.0 F) |
| 1940 | -30.6 C (-23.1 F) |
| 1941 | -20.0 C (-4.0 F) |
| 1942 | -30.6 C (-23.1 F) |
| 1943 | -28.9 C (-20.0 F) |
| 1944 | -28.9 C (-20.0 F) |
| 1945 | -23.9 C (-11.0 F) |
| 1946 | -27.8 C (-18.0 F) |
| 1947 | -28.3 C (-18.9 F) |
| 1948 | -29.4 C (-20.9 F) |
| 1949 | -28.9 C (-20.0 F) |
| 1950 | -28.9 C (-20.0 F) |
| 1951 | -26.7 C (-16.1 F) |
| 1952 | -25.0 C (-13.0 F) |
| 1953 | -25.6 C (-14.1 F) |
| 1954 | -27.8 C (-18.0 F) |
| 1955 | -27.8 C (-18.0 F) |
| 1956 | -26.7 C (-16.1 F) |
| 1957 | -30.6 C (-23.1 F) |
| 1958 | -33.9 C (-29.0 F) |
| 1959 | -28.3 C (-18.9 F) |
| 1960 | -30.6 C (-23.1 F) |
| 1961 | -27.2 C (-17.0 F) |
| 1962 | -31.1 C (-24.0 F) |
| 1963 | -28.9 C (-20.0 F) |
| 1964 | -24.4 C (-11.9 F) |
| 1965 | -27.8 C (-18.0 F) |
| 1966 | -31.1 C (-24.0 F) |
| 1967 | -29.4 C (-20.9 F) |
| 1968 | -30.0 C (-22.0 F) |
| 1969 | -27.2 C (-17.0 F) |
| 1970 | -32.8 C (-27.0 F) |
| 1971 | -28.9 C (-20.0 F) |
| 1972 | -30.0 C (-22.0 F) |
| 1973 | -27.2 C (-17.0 F) |
| 1974 | -30.6 C (-23.1 F) |
| 1975 | -28.3 C (-18.9 F) |
| 1976 | -27.2 C (-17.0 F) |
| 1977 | -30.6 C (-23.1 F) |
| 1978 | -27.8 C (-18.0 F) |
| 1979 | -28.9 C (-20.0 F) |
| 1980 | -23.9 C (-11.0 F) |
| 1981 | -30.0 C (-22.0 F) |
| 1982 | -32.2 C (-26.0 F) |
| 1983 | -31.7 C (-25.1 F) |
| 1984 | -27.2 C (-17.0 F) |
| 1985 | -29.4 C (-20.9 F) |
| 1986 | -24.4 C (-11.9 F) |
| 1987 | -23.3 C (-9.9 F) |
| 1988 | -28.3 C (-18.9 F) |
| 1989 | -32.2 C (-26.0 F) |
| 1990 | -28.9 C (-20.0 F) |
| 1991 | -23.3 C (-9.9 F) |
| 1992 | -24.4 C (-11.9 F) |
| 1993 | -24.4 C (-11.9 F) |
| 1994 | -28.3 C (-18.9 F) |
| 1995 | -23.3 C (-9.9 F) |
| 1996 | -32.8 C (-27.0 F) |
| 1997 | -26.7 C (-16.1 F) |
| 1998 | -22.8 C (-9.0 F) |
| 1999 | -26.1 C (-15.0 F) |
| 2000 | -25.0 C (-13.0 F) |
| 2001 | -25.6 C (-14.1 F) |
| 2002 | -21.1 C (-6.0 F) |
| 2003 | -24.4 C (-11.9 F) |
| 2004 | -25.0 C (-13.0 F) |
| 2005 | -22.8 C (-9.0 F) |
| 2006 | -23.9 C (-11.0 F) |
| 2007 | -27.8 C (-18.0 F) |
| 2008 | -27.8 C (-18.0 F) |
| 2009 | -28.9 C (-20.0 F) |
| 2010 | -31.1 C (-24.0 F) |
| 2011 | -27.2 C (-17.0 F) |
| 2012 | -20.6 C (-5.1 F) |
| 2013 | -23.9 C (-11.0 F) |
| 2014 | -27.2 C (-17.0 F) |
| 2015 | -25.0 C (-13.0 F) |
| 2016 | -27.2 C (-17.0 F) |
| 2017 | -25.6 C (-14.1 F) |
| 2018 | -31.1 C (-24.0 F) |
| 2019 | -29.4 C (-20.9 F) |
| 2020 | -23.9 C (-11.0 F) |
| 2021 | -35.6 C (-32.1 F) |
| 2022 | -26.7 C (-16.1 F) |
| 2023 | -22.2 C (-8.0 F) |
| 2024 | -30.0 C (-22.0 F) |
| 2025 | -26.7 C (-16.1 F) |
| 2026 | n/a |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1893 | 43.4 mm (1.7 in) |
| 1894 | 7.6 mm (0.30 in) |
| 1895 | 40.6 mm (1.6 in) |
| 1896 | 53.3 mm (2.1 in) |
| 1897 | 44.5 mm (1.8 in) |
| 1898 | 41.4 mm (1.6 in) |
| 1899 | 78.7 mm (3.1 in) |
| 1900 | 64.8 mm (2.6 in) |
| 1901 | 37.6 mm (1.5 in) |
| 1902 | 54.4 mm (2.1 in) |
| 1903 | 87.1 mm (3.4 in) |
| 1904 | 47.2 mm (1.9 in) |
| 1905 | 38.4 mm (1.5 in) |
| 1906 | 82.0 mm (3.2 in) |
| 1907 | 196.9 mm (7.8 in) |
| 1908 | 64.0 mm (2.5 in) |
| 1909 | 69.6 mm (2.7 in) |
| 1910 | 59.2 mm (2.3 in) |
| 1911 | 47.0 mm (1.9 in) |
| 1912 | 66.5 mm (2.6 in) |
| 1913 | 61.2 mm (2.4 in) |
| 1914 | 68.6 mm (2.7 in) |
| 1915 | 75.7 mm (3.0 in) |
| 1916 | 56.4 mm (2.2 in) |
| 1917 | 47.0 mm (1.9 in) |
| 1918 | 54.4 mm (2.1 in) |
| 1919 | 71.1 mm (2.8 in) |
| 1920 | 71.1 mm (2.8 in) |
| 1921 | 64.0 mm (2.5 in) |
| 1922 | 62.0 mm (2.4 in) |
| 1923 | 50.0 mm (2.0 in) |
| 1924 | 62.5 mm (2.5 in) |
| 1925 | 68.6 mm (2.7 in) |
| 1926 | 85.3 mm (3.4 in) |
| 1927 | 48.8 mm (1.9 in) |
| 1928 | 111.5 mm (4.4 in) |
| 1929 | 48.3 mm (1.9 in) |
| 1930 | 43.7 mm (1.7 in) |
| 1931 | 56.4 mm (2.2 in) |
| 1932 | 38.9 mm (1.5 in) |
| 1933 | 46.5 mm (1.8 in) |
| 1934 | 104.6 mm (4.1 in) |
| 1935 | 40.6 mm (1.6 in) |
| 1936 | 28.2 mm (1.1 in) |
| 1937 | 71.9 mm (2.8 in) |
| 1938 | 63.0 mm (2.5 in) |
| 1939 | 45.2 mm (1.8 in) |
| 1940 | 99.3 mm (3.9 in) |
| 1941 | 85.6 mm (3.4 in) |
| 1942 | 85.6 mm (3.4 in) |
| 1943 | 81.0 mm (3.2 in) |
| 1944 | 66.5 mm (2.6 in) |
| 1945 | 85.1 mm (3.4 in) |
| 1946 | 61.7 mm (2.4 in) |
| 1947 | 52.8 mm (2.1 in) |
| 1948 | 59.2 mm (2.3 in) |
| 1949 | 77.0 mm (3.0 in) |
| 1950 | 62.2 mm (2.4 in) |
| 1951 | 106.7 mm (4.2 in) |
| 1952 | 65.0 mm (2.6 in) |
| 1953 | 90.7 mm (3.6 in) |
| 1954 | 68.8 mm (2.7 in) |
| 1955 | 42.4 mm (1.7 in) |
| 1956 | 36.6 mm (1.4 in) |
| 1957 | 69.9 mm (2.8 in) |
| 1958 | 56.1 mm (2.2 in) |
| 1959 | 75.7 mm (3.0 in) |
| 1960 | 45.7 mm (1.8 in) |
| 1961 | 71.1 mm (2.8 in) |
| 1962 | 53.1 mm (2.1 in) |
| 1963 | 83.8 mm (3.3 in) |
| 1964 | 65.0 mm (2.6 in) |
| 1965 | 101.1 mm (4.0 in) |
| 1966 | 40.1 mm (1.6 in) |
| 1967 | 49.5 mm (1.9 in) |
| 1968 | 60.7 mm (2.4 in) |
| 1969 | 49.0 mm (1.9 in) |
| 1970 | 43.4 mm (1.7 in) |
| 1971 | 62.7 mm (2.5 in) |
| 1972 | 147.6 mm (5.8 in) |
| 1973 | 124.0 mm (4.9 in) |
| 1974 | 43.9 mm (1.7 in) |
| 1975 | 41.7 mm (1.6 in) |
| 1976 | 43.7 mm (1.7 in) |
| 1977 | 71.1 mm (2.8 in) |
| 1978 | 119.1 mm (4.7 in) |
| 1979 | 42.7 mm (1.7 in) |
| 1980 | 38.9 mm (1.5 in) |
| 1981 | 85.1 mm (3.4 in) |
| 1982 | 56.4 mm (2.2 in) |
| 1983 | 59.7 mm (2.4 in) |
| 1984 | 47.8 mm (1.9 in) |
| 1985 | 27.9 mm (1.1 in) |
| 1986 | 42.2 mm (1.7 in) |
| 1987 | 49.0 mm (1.9 in) |
| 1988 | 85.6 mm (3.4 in) |
| 1989 | 91.2 mm (3.6 in) |
| 1990 | 109.2 mm (4.3 in) |
| 1991 | 57.2 mm (2.3 in) |
| 1992 | 45.2 mm (1.8 in) |
| 1993 | 200.4 mm (7.9 in) |
| 1994 | 54.6 mm (2.1 in) |
| 1995 | 44.7 mm (1.8 in) |
| 1996 | 148.8 mm (5.9 in) |
| 1997 | 75.2 mm (3.0 in) |
| 1998 | 86.4 mm (3.4 in) |
| 1999 | 41.4 mm (1.6 in) |
| 2000 | 33.5 mm (1.3 in) |
| 2001 | 62.2 mm (2.4 in) |
| 2002 | 55.9 mm (2.2 in) |
| 2003 | 53.6 mm (2.1 in) |
| 2004 | 60.7 mm (2.4 in) |
| 2005 | 53.3 mm (2.1 in) |
| 2006 | 86.4 mm (3.4 in) |
| 2007 | 112.3 mm (4.4 in) |
| 2008 | 134.9 mm (5.3 in) |
| 2009 | 57.9 mm (2.3 in) |
| 2010 | 60.2 mm (2.4 in) |
| 2011 | 34.8 mm (1.4 in) |
| 2012 | 34.3 mm (1.4 in) |
| 2013 | 58.2 mm (2.3 in) |
| 2014 | 109.5 mm (4.3 in) |
| 2015 | 87.6 mm (3.4 in) |
| 2016 | 58.4 mm (2.3 in) |
| 2017 | 164.3 mm (6.5 in) |
| 2018 | 83.8 mm (3.3 in) |
| 2019 | 47.0 mm (1.9 in) |
| 2020 | 75.9 mm (3.0 in) |
| 2021 | 41.4 mm (1.6 in) |
| 2022 | 40.9 mm (1.6 in) |
| 2023 | 50.8 mm (2.0 in) |
| 2024 | 47.8 mm (1.9 in) |
| 2025 | 21.8 mm (0.9 in) |
| 2026 | 0.0 mm (0.00 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1893 | 60.8 mm (2.4 in) |
| 1894 | 14.0 mm (0.6 in) |
| 1895 | 51.3 mm (2.0 in) |
| 1896 | 154.4 mm (6.1 in) |
| 1897 | 83.0 mm (3.3 in) |
| 1898 | 54.8 mm (2.2 in) |
| 1899 | 94.7 mm (3.7 in) |
| 1900 | 128.9 mm (5.1 in) |
| 1901 | 91.7 mm (3.6 in) |
| 1902 | 131.1 mm (5.2 in) |
| 1903 | 112.3 mm (4.4 in) |
| 1904 | 48.5 mm (1.9 in) |
| 1905 | 57.2 mm (2.3 in) |
| 1906 | 109.1 mm (4.3 in) |
| 1907 | 207.8 mm (8.2 in) |
| 1908 | 99.1 mm (3.9 in) |
| 1909 | 141.9 mm (5.6 in) |
| 1910 | 171.7 mm (6.8 in) |
| 1911 | 67.9 mm (2.7 in) |
| 1912 | 80.2 mm (3.2 in) |
| 1913 | 94.7 mm (3.7 in) |
| 1914 | 87.9 mm (3.5 in) |
| 1915 | 118.1 mm (4.6 in) |
| 1916 | 65.8 mm (2.6 in) |
| 1917 | 102.6 mm (4.0 in) |
| 1918 | 101.1 mm (4.0 in) |
| 1919 | 101.6 mm (4.0 in) |
| 1920 | 76.4 mm (3.0 in) |
| 1921 | 84.2 mm (3.3 in) |
| 1922 | 102.4 mm (4.0 in) |
| 1923 | 76.6 mm (3.0 in) |
| 1924 | 103.2 mm (4.1 in) |
| 1925 | 120.1 mm (4.7 in) |
| 1926 | 109.0 mm (4.3 in) |
| 1927 | 75.4 mm (3.0 in) |
| 1928 | 136.4 mm (5.4 in) |
| 1929 | 63.3 mm (2.5 in) |
| 1930 | 55.8 mm (2.2 in) |
| 1931 | 84.6 mm (3.3 in) |
| 1932 | 58.7 mm (2.3 in) |
| 1933 | 61.2 mm (2.4 in) |
| 1934 | 129.8 mm (5.1 in) |
| 1935 | 52.8 mm (2.1 in) |
| 1936 | 66.0 mm (2.6 in) |
| 1937 | 84.6 mm (3.3 in) |
| 1938 | 125.3 mm (4.9 in) |
| 1939 | 98.3 mm (3.9 in) |
| 1940 | 117.5 mm (4.6 in) |
| 1941 | 96.1 mm (3.8 in) |
| 1942 | 105.9 mm (4.2 in) |
| 1943 | 96.0 mm (3.8 in) |
| 1944 | 120.6 mm (4.7 in) |
| 1945 | 134.9 mm (5.3 in) |
| 1946 | 95.8 mm (3.8 in) |
| 1947 | 56.9 mm (2.2 in) |
| 1948 | 105.4 mm (4.1 in) |
| 1949 | 89.4 mm (3.5 in) |
| 1950 | 88.6 mm (3.5 in) |
| 1951 | 151.5 mm (6.0 in) |
| 1952 | 83.0 mm (3.3 in) |
| 1953 | 122.2 mm (4.8 in) |
| 1954 | 97.3 mm (3.8 in) |
| 1955 | 64.8 mm (2.6 in) |
| 1956 | 77.5 mm (3.1 in) |
| 1957 | 140.3 mm (5.5 in) |
| 1958 | 60.2 mm (2.4 in) |
| 1959 | 109.7 mm (4.3 in) |
| 1960 | 71.1 mm (2.8 in) |
| 1961 | 77.2 mm (3.0 in) |
| 1962 | 102.9 mm (4.1 in) |
| 1963 | 97.3 mm (3.8 in) |
| 1964 | 95.7 mm (3.8 in) |
| 1965 | 154.2 mm (6.1 in) |
| 1966 | 60.4 mm (2.4 in) |
| 1967 | 160.4 mm (6.3 in) |
| 1968 | 118.9 mm (4.7 in) |
| 1969 | 70.8 mm (2.8 in) |
| 1970 | 73.8 mm (2.9 in) |
| 1971 | 102.1 mm (4.0 in) |
| 1972 | 245.7 mm (9.7 in) |
| 1973 | 154.9 mm (6.1 in) |
| 1974 | 100.2 mm (3.9 in) |
| 1975 | 47.8 mm (1.9 in) |
| 1976 | 78.0 mm (3.1 in) |
| 1977 | 117.4 mm (4.6 in) |
| 1978 | 144.0 mm (5.7 in) |
| 1979 | 57.1 mm (2.2 in) |
| 1980 | 58.2 mm (2.3 in) |
| 1981 | 93.0 mm (3.7 in) |
| 1982 | 67.1 mm (2.6 in) |
| 1983 | 86.1 mm (3.4 in) |
| 1984 | 71.1 mm (2.8 in) |
| 1985 | 48.4 mm (1.9 in) |
| 1986 | 97.3 mm (3.8 in) |
| 1987 | 104.0 mm (4.1 in) |
| 1988 | 107.0 mm (4.2 in) |
| 1989 | 135.4 mm (5.3 in) |
| 1990 | 190.6 mm (7.5 in) |
| 1991 | 94.8 mm (3.7 in) |
| 1992 | 88.2 mm (3.5 in) |
| 1993 | 237.8 mm (9.4 in) |
| 1994 | 78.0 mm (3.1 in) |
| 1995 | 64.6 mm (2.5 in) |
| 1996 | 152.6 mm (6.0 in) |
| 1997 | 95.7 mm (3.8 in) |
| 1998 | 101.3 mm (4.0 in) |
| 1999 | 69.1 mm (2.7 in) |
| 2000 | 58.1 mm (2.3 in) |
| 2001 | 130.3 mm (5.1 in) |
| 2002 | 83.9 mm (3.3 in) |
| 2003 | 78.5 mm (3.1 in) |
| 2004 | 63.0 mm (2.5 in) |
| 2005 | 71.7 mm (2.8 in) |
| 2006 | 97.3 mm (3.8 in) |
| 2007 | 139.7 mm (5.5 in) |
| 2008 | 209.6 mm (8.3 in) |
| 2009 | 75.0 mm (3.0 in) |
| 2010 | 113.6 mm (4.5 in) |
| 2011 | 66.0 mm (2.6 in) |
| 2012 | 56.7 mm (2.2 in) |
| 2013 | 79.1 mm (3.1 in) |
| 2014 | 159.7 mm (6.3 in) |
| 2015 | 130.7 mm (5.1 in) |
| 2016 | 75.2 mm (3.0 in) |
| 2017 | 180.1 mm (7.1 in) |
| 2018 | 176.0 mm (6.9 in) |
| 2019 | 77.2 mm (3.0 in) |
| 2020 | 97.7 mm (3.8 in) |
| 2021 | 82.8 mm (3.3 in) |
| 2022 | 48.3 mm (1.9 in) |
| 2023 | 61.5 mm (2.4 in) |
| 2024 | 79.1 mm (3.1 in) |
| 2025 | 37.8 mm (1.5 in) |
| 2026 | n/a |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1893 | 18 days |
| 1894 | 12 days |
| 1895 | 31 days |
| 1896 | 63 days |
| 1897 | 37 days |
| 1898 | 24 days |
| 1899 | 27 days |
| 1900 | 28 days |
| 1901 | 31 days |
| 1902 | 19 days |
| 1903 | 26 days |
| 1904 | 30 days |
| 1905 | 29 days |
| 1906 | 31 days |
| 1907 | 27 days |
| 1908 | 25 days |
| 1909 | 18 days |
| 1910 | 57 days |
| 1911 | 33 days |
| 1912 | 26 days |
| 1913 | 45 days |
| 1914 | 38 days |
| 1915 | 22 days |
| 1916 | 21 days |
| 1917 | 71 days |
| 1918 | 22 days |
| 1919 | 31 days |
| 1920 | 33 days |
| 1921 | 34 days |
| 1922 | 23 days |
| 1923 | 26 days |
| 1924 | 33 days |
| 1925 | 26 days |
| 1926 | 25 days |
| 1927 | 34 days |
| 1928 | 36 days |
| 1929 | 30 days |
| 1930 | 30 days |
| 1931 | 39 days |
| 1932 | 28 days |
| 1933 | 32 days |
| 1934 | 42 days |
| 1935 | 25 days |
| 1936 | 24 days |
| 1937 | 32 days |
| 1938 | 33 days |
| 1939 | 45 days |
| 1940 | 20 days |
| 1941 | 27 days |
| 1942 | 33 days |
| 1943 | 53 days |
| 1944 | 26 days |
| 1945 | 24 days |
| 1946 | 26 days |
| 1947 | 24 days |
| 1948 | 22 days |
| 1949 | 51 days |
| 1950 | 31 days |
| 1951 | 28 days |
| 1952 | 47 days |
| 1953 | 27 days |
| 1954 | 31 days |
| 1955 | 23 days |
| 1956 | 34 days |
| 1957 | 37 days |
| 1958 | 45 days |
| 1959 | 25 days |
| 1960 | 29 days |
| 1961 | 23 days |
| 1962 | 32 days |
| 1963 | 23 days |
| 1964 | 19 days |
| 1965 | 20 days |
| 1966 | 48 days |
| 1967 | 29 days |
| 1968 | 32 days |
| 1969 | 18 days |
| 1970 | 26 days |
| 1971 | 31 days |
| 1972 | 22 days |
| 1973 | 21 days |
| 1974 | 23 days |
| 1975 | 27 days |
| 1976 | 36 days |
| 1977 | 16 days |
| 1978 | 21 days |
| 1979 | 30 days |
| 1980 | 33 days |
| 1981 | 31 days |
| 1982 | 16 days |
| 1983 | 23 days |
| 1984 | 16 days |
| 1985 | 27 days |
| 1986 | 34 days |
| 1987 | 34 days |
| 1988 | 35 days |
| 1989 | 27 days |
| 1990 | 25 days |
| 1991 | 20 days |
| 1992 | 17 days |
| 1993 | 22 days |
| 1994 | 45 days |
| 1995 | 25 days |
| 1996 | 26 days |
| 1997 | 23 days |
| 1998 | 39 days |
| 1999 | 47 days |
| 2000 | 19 days |
| 2001 | 31 days |
| 2002 | 29 days |
| 2003 | 18 days |
| 2004 | 19 days |
| 2005 | 30 days |
| 2006 | 26 days |
| 2007 | 30 days |
| 2008 | 19 days |
| 2009 | 23 days |
| 2010 | 29 days |
| 2011 | 22 days |
| 2012 | 33 days |
| 2013 | 20 days |
| 2014 | 17 days |
| 2015 | 26 days |
| 2016 | 39 days |
| 2017 | 33 days |
| 2018 | 24 days |
| 2019 | 12 days |
| 2020 | 20 days |
| 2021 | 29 days |
| 2022 | 26 days |
| 2023 | 26 days |
| 2024 | 37 days |
| 2025 | 39 days |
| 2026 | 3 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
121 years with a frostAcross 121 years with a frost, the median last spring frost at Denison falls on 1 May and the median first autumn frost on 4 October, which leaves a median of 156 days between them.
In 1995 to 2024 the median growing season was 168 days. That is 25 days more than in 1897 to 1930.
Fitted over all years, the growing season changes by +2.2 days per decade at this station.
| Measure | Median, all years | Earliest period (1897 to 1930) | Recent period (1995 to 2024) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 1 May | 9 May | 24 April | 15 days earlier | -1.3 days per decade |
| First autumn frost | 4 October | 29 September | 7 October | 8 days later | +0.9 days per decade |
| Growing days | 156 days | 143 days | 168 days | 25 days more | +2.2 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
122 years, 1897 to 2023A day with at least 60.3 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 187.8 mm (7.4 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 60.3 mm (2.4 in) | |
| 5 years | 84.8 mm (3.3 in) | |
| 10 years | 104.3 mm (4.1 in) | |
| 25 years | 133.4 mm (5.3 in) | |
| 50 years | 158.8 mm (6.3 in) | |
| 100 years | 187.8 mm (7.4 in) |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 122 years of values from 1897 to 2023.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 200.4 mm (7.9 in) in 1993; 196.9 mm (7.8 in) in 1907; 164.3 mm (6.5 in) in 2017.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2010 to 2024 against 1961 to 1990Over 2010 to 2024, Denison had a mean temperature of 9.0 C (48.1 F) and 852.8 mm (33.6 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Bellevue L/D 12 (United States, 405 km away), Beloit (United States, 521 km away) and Dixon Wwtp (United States, 481 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Bellevue L/D 12 | United States | 405 km (252 mi) | 9.1 C (48.3 F) | 850.5 mm (33.5 in) | 0.69 |
| Beloit | United States | 521 km (324 mi) | 9.1 C (48.5 F) | 852.3 mm (33.6 in) | 0.73 |
| Dixon Wwtp | United States | 481 km (299 mi) | 9.2 C (48.6 F) | 888.0 mm (35.0 in) | 0.75 |
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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2025-12-31).