Allison Weather Records (USC00130157)
Record envelope, standing records and threshold days for Allison (USC00130157), Iowa, United States, with 113 years of record.
Key Facts for Allison
- Allison (USC00130157) is a weather station in Iowa, United States at 42.75 latitude and -92.80 longitude, 316 m (1,038 ft) above sea level.
- The station reports from 1914 to 2026, 113 years of record.
- 1,464 records set at Allison still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Allison set a daily record precipitation of 63.5 mm (2.5 in) on 30 September 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Iowa, United States, 42.75 latitude, -92.80 longitude.
- Elevation: 316 m (1,038 ft).
- Period of record: 1914 to 2026, 113 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
2 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 17.8 C (64.0 F) | -34.4 C (-29.9 F) | 8.3 C (46.9 F) | -28.3 C (-18.9 F) |
| Feb | 23.9 C (75.0 F) | -35.0 C (-31.0 F) | 16.1 C (61.0 F) | -19.4 C (-2.9 F) |
| Mar | 29.4 C (84.9 F) | -31.7 C (-25.1 F) | 29.4 C (84.9 F) | -16.7 C (1.9 F) |
| Apr | 35.6 C (96.1 F) | -15.0 C (5.0 F) | 28.9 C (84.0 F) | -4.4 C (24.1 F) |
| May | 41.1 C (106.0 F) | -3.9 C (25.0 F) | 31.1 C (88.0 F) | 0.0 C (32.0 F) |
| Jun | 40.6 C (105.1 F) | 2.2 C (36.0 F) | 32.2 C (90.0 F) | 9.4 C (48.9 F) |
| Jul | 42.8 C (109.0 F) | 5.6 C (42.1 F) | 33.9 C (93.0 F) | 13.9 C (57.0 F) |
| Aug | 41.7 C (107.1 F) | 0.0 C (32.0 F) | 31.7 C (89.1 F) | 11.1 C (52.0 F) |
| Sep | 38.3 C (100.9 F) | -3.9 C (25.0 F) | 32.2 C (90.0 F) | 8.3 C (46.9 F) |
| Oct | 35.6 C (96.1 F) | -17.8 C (0.0 F) | 26.1 C (79.0 F) | 7.8 C (46.0 F) |
| Nov | 26.7 C (80.1 F) | -26.7 C (-16.1 F) | n/a | n/a |
| Dec | 21.1 C (70.0 F) | -32.8 C (-27.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1914 | 9 |
| 1915 | 17 |
| 1916 | 21 |
| 1917 | 22 |
| 1918 | 20 |
| 1919 | 14 |
| 1920 | 10 |
| 1921 | 10 |
| 1922 | 9 |
| 1923 | 21 |
| 1924 | 17 |
| 1925 | 28 |
| 1926 | 15 |
| 1927 | 20 |
| 1928 | 10 |
| 1929 | 8 |
| 1930 | 24 |
| 1931 | 31 |
| 1932 | 11 |
| 1933 | 16 |
| 1934 | 30 |
| 1935 | 15 |
| 1936 | 58 |
| 1937 | 19 |
| 1938 | 12 |
| 1939 | 26 |
| 1940 | 18 |
| 1941 | 14 |
| 1942 | 11 |
| 1943 | 10 |
| 1944 | 15 |
| 1945 | 14 |
| 1946 | 11 |
| 1947 | 29 |
| 1948 | 7 |
| 1949 | 9 |
| 1950 | 16 |
| 1951 | 17 |
| 1952 | 10 |
| 1953 | 17 |
| 1954 | 9 |
| 1955 | 12 |
| 1956 | 7 |
| 1957 | 3 |
| 1958 | 9 |
| 1959 | 9 |
| 1960 | 10 |
| 1961 | 5 |
| 1962 | 17 |
| 1963 | 16 |
| 1964 | 14 |
| 1965 | 13 |
| 1966 | 14 |
| 1967 | 10 |
| 1968 | 13 |
| 1969 | 5 |
| 1970 | 15 |
| 1971 | 4 |
| 1972 | 8 |
| 1973 | 14 |
| 1974 | 10 |
| 1975 | 10 |
| 1976 | 4 |
| 1977 | 13 |
| 1978 | 6 |
| 1979 | 7 |
| 1980 | 4 |
| 1981 | 17 |
| 1982 | 12 |
| 1983 | 15 |
| 1984 | 9 |
| 1985 | 13 |
| 1986 | 9 |
| 1987 | 15 |
| 1988 | 14 |
| 1989 | 11 |
| 1990 | 17 |
| 1991 | 16 |
| 1992 | 10 |
| 1993 | 5 |
| 1994 | 12 |
| 1995 | 5 |
| 1996 | 10 |
| 1997 | 9 |
| 1998 | 19 |
| 1999 | 11 |
| 2000 | 21 |
| 2001 | 7 |
| 2002 | 8 |
| 2003 | 7 |
| 2004 | 10 |
| 2005 | 8 |
| 2006 | 11 |
| 2007 | 8 |
| 2008 | 4 |
| 2009 | 8 |
| 2010 | 5 |
| 2011 | 8 |
| 2012 | 26 |
| 2013 | 7 |
| 2014 | 16 |
| 2015 | 13 |
| 2016 | 6 |
| 2017 | 14 |
| 2018 | 20 |
| 2019 | 14 |
| 2020 | 4 |
| 2021 | 19 |
| 2022 | 9 |
| 2023 | 8 |
| 2024 | 9 |
| 2025 | 6 |
| 2026 | 7 |
All-Time Record Progression
6 new records| Date | Kind | Detail |
|---|---|---|
| 1951-06-26 | Record daily precipitation | Record daily precipitation 177.8 mm (7.0 in) |
| 1968-07-17 | Record daily precipitation | Record daily precipitation 181.9 mm (7.2 in) |
| 1973-04-09 | Record daily snowfall | Record daily snowfall 35.6 cm (14.0 in) |
| 1991-07-21 | Record high minimum temperature | Record high minimum temperature 28.9 C (84.0 F) |
| 1996-02-02 | Record low minimum temperature | Record low minimum temperature -35.0 C (-31.0 F) |
| 2019-01-31 | Record low maximum temperature | Record low maximum temperature -26.7 C (-16.1 F) |
Wettest Day of Each Month
Jul: 181.9 mm (7.2 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 44.5 mm (1.8 in) | 22 January 2018 |
| Feb | 43.2 mm (1.7 in) | 27 February 1948 |
| Mar | 49.5 mm (1.9 in) | 30 March 1993 |
| Apr | 101.6 mm (4.0 in) | 25 April 2008 |
| May | 98.0 mm (3.9 in) | 17 May 1999 |
| Jun | 177.8 mm (7.0 in) | 26 June 1951 |
| Jul | 181.9 mm (7.2 in) | 17 July 1968 |
| Aug | 133.1 mm (5.2 in) | 20 August 2007 |
| Sep | 119.9 mm (4.7 in) | 8 September 1941 |
| Oct | 78.7 mm (3.1 in) | 9 October 1970 |
| Nov | 65.5 mm (2.6 in) | 1 November 1992 |
| Dec | 61.0 mm (2.4 in) | 29 December 2007 |
Period of Record Coverage
1914 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1914 | 333 | 91% | Yes |
| 1915 | 365 | 100% | Yes |
| 1916 | 365 | 100% | Yes |
| 1917 | 334 | 92% | Yes |
| 1918 | 364 | 100% | Yes |
| 1919 | 364 | 100% | Yes |
| 1920 | 366 | 100% | Yes |
| 1921 | 365 | 100% | Yes |
| 1922 | 365 | 100% | Yes |
| 1923 | 363 | 99% | Yes |
| 1924 | 364 | 99% | Yes |
| 1925 | 363 | 99% | Yes |
| 1926 | 361 | 99% | Yes |
| 1927 | 352 | 96% | Yes |
| 1928 | 363 | 99% | Yes |
| 1929 | 144 | 39% | No |
| 1930 | 297 | 81% | No |
| 1931 | 363 | 99% | Yes |
| 1932 | 365 | 100% | Yes |
| 1933 | 360 | 99% | Yes |
| 1934 | 329 | 90% | Yes |
| 1935 | 363 | 99% | Yes |
| 1936 | 362 | 99% | Yes |
| 1937 | 358 | 98% | Yes |
| 1938 | 364 | 100% | Yes |
| 1939 | 363 | 99% | Yes |
| 1940 | 335 | 92% | Yes |
| 1941 | 360 | 99% | Yes |
| 1942 | 359 | 98% | Yes |
| 1943 | 363 | 99% | Yes |
| 1944 | 364 | 99% | Yes |
| 1945 | 357 | 98% | Yes |
| 1946 | 263 | 72% | No |
| 1947 | 358 | 98% | Yes |
| 1948 | 321 | 88% | No |
| 1949 | 364 | 100% | Yes |
| 1950 | 338 | 93% | Yes |
| 1951 | 359 | 98% | Yes |
| 1952 | 348 | 95% | Yes |
| 1953 | 354 | 97% | Yes |
| 1954 | 357 | 98% | Yes |
| 1955 | 364 | 100% | Yes |
| 1956 | 357 | 98% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 364 | 100% | Yes |
| 1959 | 364 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 362 | 99% | Yes |
| 1962 | 361 | 99% | Yes |
| 1963 | 364 | 100% | Yes |
| 1964 | 359 | 98% | Yes |
| 1965 | 362 | 99% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 333 | 91% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 364 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 336 | 92% | Yes |
| 1973 | 363 | 99% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 362 | 99% | Yes |
| 1976 | 243 | 66% | No |
| 1977 | 258 | 71% | No |
| 1978 | 359 | 98% | Yes |
| 1979 | 360 | 99% | Yes |
| 1980 | 349 | 95% | Yes |
| 1981 | 363 | 99% | Yes |
| 1982 | 358 | 98% | Yes |
| 1983 | 363 | 99% | Yes |
| 1984 | 365 | 100% | Yes |
| 1985 | 363 | 99% | Yes |
| 1986 | 364 | 100% | Yes |
| 1987 | 363 | 99% | Yes |
| 1988 | 362 | 99% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 355 | 97% | Yes |
| 1991 | 359 | 98% | Yes |
| 1992 | 363 | 99% | Yes |
| 1993 | 365 | 100% | Yes |
| 1994 | 363 | 99% | Yes |
| 1995 | 346 | 95% | Yes |
| 1996 | 365 | 100% | Yes |
| 1997 | 363 | 99% | Yes |
| 1998 | 362 | 99% | Yes |
| 1999 | 356 | 98% | Yes |
| 2000 | 359 | 98% | Yes |
| 2001 | 341 | 93% | Yes |
| 2002 | 364 | 100% | Yes |
| 2003 | 364 | 100% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 360 | 99% | Yes |
| 2006 | 362 | 99% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 360 | 98% | Yes |
| 2009 | 365 | 100% | Yes |
| 2010 | 363 | 99% | Yes |
| 2011 | 360 | 99% | Yes |
| 2012 | 365 | 100% | Yes |
| 2013 | 361 | 99% | Yes |
| 2014 | 363 | 99% | Yes |
| 2015 | 364 | 100% | Yes |
| 2016 | 363 | 99% | Yes |
| 2017 | 363 | 99% | Yes |
| 2018 | 360 | 99% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 364 | 99% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 364 | 100% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 315 | 86% | No |
| 2026 | 248 | 68% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 30 September 2026 | Allison, US | daily rain (Provisional) | 63.5 mm (2.5 in) | 17.8 mm (0.7 in) | 100 years | 51 of 100 (Notable) |
| 30 September 2026 | Allison, US | daily high min (Tie, Provisional) | 16.7 C (62.1 F) | tie | 100 years | 10 of 100 (Routine) |
| 21 July 2026 | Allison, US | daily rain | 66.0 mm (2.6 in) | 10.9 mm (0.4 in) | 27 years | 24 of 100 (Routine) |
| 2 July 2026 | Allison, US | daily high min | 23.3 C (73.9 F) | 1.6 C (2.9 F) | 52 years | 29 of 100 (Routine) |
| 1 July 2026 | Allison, US | daily high min | 24.4 C (75.9 F) | 1.1 C (2.0 F) | 63 years | 31 of 100 (Routine) |
| 30 June 2026 | Allison, US | monthly high min (Tie) | 24.4 C (75.9 F) | tie | 73 years | 10 of 100 (Routine) |
| 22 June 2026 | Allison, US | daily low max (Tie) | 18.3 C (64.9 F) | tie | 68 years | 7 of 100 (Routine) |
| 16 April 2026 | Allison, US | daily rain (Tie) | 44.5 mm (1.8 in) | tie | 20 years | 4 of 100 (Routine) |
| 4 April 2026 | Allison, US | daily rain | 50.8 mm (2.0 in) | 12.7 mm (0.5 in) | 56 years | 39 of 100 (Notable) |
| 3 April 2026 | Allison, US | daily rain | 31.8 mm (1.3 in) | 2.3 mm (0.09 in) | 52 years | 27 of 100 (Routine) |
| 31 March 2026 | Allison, US | daily high max | 28.9 C (84.0 F) | 2.2 C (4.0 F) | 40 years | 25 of 100 (Routine) |
| 22 March 2026 | Allison, US | monthly high max | 29.4 C (84.9 F) | 0.5 C (0.9 F) | 39 years | 31 of 100 (Routine) |
| 18 March 2026 | Allison, US | daily low max (Tie) | -5.6 C (21.9 F) | tie | 36 years | 5 of 100 (Routine) |
| 17 March 2026 | Allison, US | daily low max | -10.0 C (14.0 F) | 1.1 C (2.0 F) | 84 years | 36 of 100 (Notable) |
| 7 March 2026 | Allison, US | daily rain | 30.5 mm (1.2 in) | 15.3 mm (0.6 in) | 69 years | 50 of 100 (Notable) |
| 20 February 2026 | Allison, US | monthly snowfall | 33.0 cm (13.0 in) | 2.5 cm (1.0 in) | 86 years | 51 of 100 (Notable) |
| 20 February 2026 | Allison, US | daily rain (Tie) | 15.2 mm (0.6 in) | tie | 8 years | 3 of 100 (Routine) |
| 16 February 2026 | Allison, US | daily high min (Tie) | 3.3 C (37.9 F) | tie | 42 years | 5 of 100 (Routine) |
| 24 January 2026 | Allison, US | daily low max | -22.8 C (-9.0 F) | 2.2 C (4.0 F) | 90 years | 40 of 100 (Notable) |
| 9 January 2026 | Allison, US | daily rain | 19.1 mm (0.8 in) | 2.6 mm (0.10 in) | 96 years | 20 of 100 (Routine) |
Climate Trend
92 complete years, 1915 to 2024| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1915 | 7.7 C | -0.85 C |
| 1916 | 7.4 C | -1.11 C |
| 1918 | 8.6 C | +0.03 C |
| 1919 | 8.4 C | -0.17 C |
| 1920 | 8.0 C | -0.55 C |
| 1921 | 10.2 C | +1.68 C |
| 1922 | 9.0 C | +0.51 C |
| 1923 | 8.5 C | -0.04 C |
| 1924 | 6.9 C | -1.63 C |
| 1925 | 8.2 C | -0.33 C |
| 1926 | 7.8 C | -0.72 C |
| 1927 | 8.0 C | -0.55 C |
| 1928 | 8.2 C | -0.36 C |
| 1932 | 8.0 C | -0.58 C |
| 1933 | 9.3 C | +0.76 C |
| 1935 | 8.2 C | -0.36 C |
| 1936 | 8.0 C | -0.54 C |
| 1937 | 7.4 C | -1.11 C |
| 1938 | 9.8 C | +1.23 C |
| 1939 | 9.7 C | +1.17 C |
| 1941 | 9.8 C | +1.24 C |
| 1942 | 8.5 C | -0.07 C |
| 1943 | 7.8 C | -0.74 C |
| 1944 | 9.3 C | +0.75 C |
| 1945 | 8.1 C | -0.45 C |
| 1947 | 8.7 C | +0.14 C |
| 1949 | 9.2 C | +0.66 C |
| 1951 | 6.7 C | -1.86 C |
| 1952 | 8.9 C | +0.39 C |
| 1953 | 9.3 C | +0.74 C |
| 1954 | 9.4 C | +0.84 C |
| 1955 | 8.8 C | +0.31 C |
| 1956 | 8.8 C | +0.23 C |
| 1957 | 8.7 C | +0.16 C |
| 1958 | 8.5 C | -0.08 C |
| 1959 | 8.3 C | -0.24 C |
| 1960 | 8.2 C | -0.29 C |
| 1961 | 8.5 C | +0.00 C |
| 1962 | 8.0 C | -0.52 C |
| 1963 | 8.7 C | +0.21 C |
| 1964 | 9.7 C | +1.13 C |
| 1965 | 7.9 C | -0.59 C |
| 1966 | 8.0 C | -0.54 C |
| 1968 | 9.1 C | +0.55 C |
| 1969 | 7.9 C | -0.59 C |
| 1970 | 8.3 C | -0.19 C |
| 1971 | 8.6 C | +0.11 C |
| 1973 | 9.7 C | +1.13 C |
| 1974 | 8.9 C | +0.34 C |
| 1975 | 8.9 C | +0.35 C |
| 1978 | 7.2 C | -1.31 C |
| 1981 | 8.7 C | +0.14 C |
| 1982 | 7.1 C | -1.40 C |
| 1983 | 8.0 C | -0.49 C |
| 1984 | 8.7 C | +0.21 C |
| 1985 | 7.7 C | -0.84 C |
| 1986 | 8.8 C | +0.28 C |
| 1987 | 10.8 C | +2.29 C |
| 1988 | 9.1 C | +0.61 C |
| 1989 | 8.2 C | -0.35 C |
| 1991 | 9.0 C | +0.50 C |
| 1992 | 8.4 C | -0.18 C |
| 1993 | 7.4 C | -1.11 C |
| 1994 | 8.4 C | -0.17 C |
| 1996 | 7.2 C | -1.37 C |
| 1997 | 8.3 C | -0.26 C |
| 1998 | 10.4 C | +1.88 C |
| 1999 | 9.8 C | +1.30 C |
| 2000 | 9.2 C | +0.68 C |
| 2002 | 9.7 C | +1.17 C |
| 2003 | 8.8 C | +0.30 C |
| 2004 | 9.2 C | +0.66 C |
| 2005 | 9.5 C | +0.95 C |
| 2006 | 10.1 C | +1.56 C |
| 2007 | 8.2 C | -0.30 C |
| 2008 | 6.9 C | -1.65 C |
| 2009 | 7.4 C | -1.14 C |
| 2010 | 8.3 C | -0.22 C |
| 2011 | 8.3 C | -0.24 C |
| 2012 | 10.4 C | +1.90 C |
| 2013 | 7.2 C | -1.38 C |
| 2014 | 6.3 C | -2.20 C |
| 2015 | 8.7 C | +0.12 C |
| 2016 | 9.2 C | +0.69 C |
| 2017 | 9.0 C | +0.42 C |
| 2018 | 7.5 C | -1.06 C |
| 2019 | 7.1 C | -1.41 C |
| 2020 | 8.5 C | -0.02 C |
| 2021 | 9.0 C | +0.50 C |
| 2022 | 7.2 C | -1.32 C |
| 2023 | 9.4 C | +0.87 C |
| 2024 | 10.0 C | +1.49 C |
The fitted trend in annual mean temperature here over 1915 to 2024 is 0.02 C (-0.04 to 0.08) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.03 F (-0.07 to 0.14) per decade. The slope is a straight line fitted to 92 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.02 C (-0.04 to 0.08) per decade | 0.03 F (-0.07 to 0.14) per decade | 1915 to 2024 | 92 | Not clearly different from zero |
| Mean daily maximum | -0.03 C (-0.09 to 0.04) per decade | -0.05 F (-0.16 to 0.07) per decade | 1915 to 2024 | 92 | Not clearly different from zero |
| Mean daily minimum | 0.06 C (0.00 to 0.12) per decade | 0.11 F (0.00 to 0.22) per decade | 1915 to 2024 | 92 | 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
1914 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 42.8 C (109.0 F) | 1936 | 35.6 C (96.1 F) | 113 |
| Coldest night (TNn) | -35.0 C (-31.0 F) | 1996 | -28.3 C (-18.9 F) | 113 |
| Wettest day (Rx1day) | 181.9 mm (7.2 in) | 1968 | 64.3 mm (2.5 in) | 113 |
| Wettest five days (Rx5day) | 222.2 mm (8.7 in) | 1951 | 99.8 mm (3.9 in) | 113 |
| Longest dry spell (CDD) | 60 days | 1988 | 24 days | 113 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1914 | 37.8 C (100.0 F) |
| 1915 | 32.8 C (91.0 F) |
| 1916 | 38.3 C (100.9 F) |
| 1917 | 37.2 C (99.0 F) |
| 1918 | 37.8 C (100.0 F) |
| 1919 | 37.8 C (100.0 F) |
| 1920 | 35.6 C (96.1 F) |
| 1921 | 38.3 C (100.9 F) |
| 1922 | 37.8 C (100.0 F) |
| 1923 | 38.3 C (100.9 F) |
| 1924 | 33.9 C (93.0 F) |
| 1925 | 37.8 C (100.0 F) |
| 1926 | 40.0 C (104.0 F) |
| 1927 | 35.6 C (96.1 F) |
| 1928 | 34.4 C (93.9 F) |
| 1929 | 28.9 C (84.0 F) |
| 1930 | 37.8 C (100.0 F) |
| 1931 | 38.9 C (102.0 F) |
| 1932 | 35.6 C (96.1 F) |
| 1933 | 37.8 C (100.0 F) |
| 1934 | 41.1 C (106.0 F) |
| 1935 | 36.1 C (97.0 F) |
| 1936 | 42.8 C (109.0 F) |
| 1937 | 38.9 C (102.0 F) |
| 1938 | 36.7 C (98.1 F) |
| 1939 | 38.3 C (100.9 F) |
| 1940 | 40.0 C (104.0 F) |
| 1941 | 36.7 C (98.1 F) |
| 1942 | 35.6 C (96.1 F) |
| 1943 | 35.0 C (95.0 F) |
| 1944 | 37.2 C (99.0 F) |
| 1945 | 36.1 C (97.0 F) |
| 1946 | 36.7 C (98.1 F) |
| 1947 | 38.9 C (102.0 F) |
| 1948 | 40.0 C (104.0 F) |
| 1949 | 36.1 C (97.0 F) |
| 1950 | 33.3 C (91.9 F) |
| 1951 | 33.3 C (91.9 F) |
| 1952 | 35.0 C (95.0 F) |
| 1953 | 36.1 C (97.0 F) |
| 1954 | 36.1 C (97.0 F) |
| 1955 | 38.9 C (102.0 F) |
| 1956 | 36.1 C (97.0 F) |
| 1957 | 36.1 C (97.0 F) |
| 1958 | 35.0 C (95.0 F) |
| 1959 | 34.4 C (93.9 F) |
| 1960 | 35.6 C (96.1 F) |
| 1961 | 35.0 C (95.0 F) |
| 1962 | 33.3 C (91.9 F) |
| 1963 | 36.1 C (97.0 F) |
| 1964 | 35.6 C (96.1 F) |
| 1965 | 36.7 C (98.1 F) |
| 1966 | 37.8 C (100.0 F) |
| 1967 | 35.0 C (95.0 F) |
| 1968 | 35.0 C (95.0 F) |
| 1969 | 34.4 C (93.9 F) |
| 1970 | 38.3 C (100.9 F) |
| 1971 | 36.7 C (98.1 F) |
| 1972 | 35.0 C (95.0 F) |
| 1973 | 34.4 C (93.9 F) |
| 1974 | 36.7 C (98.1 F) |
| 1975 | 34.4 C (93.9 F) |
| 1976 | 36.1 C (97.0 F) |
| 1977 | 36.7 C (98.1 F) |
| 1978 | 35.6 C (96.1 F) |
| 1979 | 32.8 C (91.0 F) |
| 1980 | 36.7 C (98.1 F) |
| 1981 | 35.6 C (96.1 F) |
| 1982 | 34.4 C (93.9 F) |
| 1983 | 35.6 C (96.1 F) |
| 1984 | 35.6 C (96.1 F) |
| 1985 | 38.9 C (102.0 F) |
| 1986 | 33.9 C (93.0 F) |
| 1987 | 37.2 C (99.0 F) |
| 1988 | 40.0 C (104.0 F) |
| 1989 | 37.2 C (99.0 F) |
| 1990 | 37.2 C (99.0 F) |
| 1991 | 35.6 C (96.1 F) |
| 1992 | 32.8 C (91.0 F) |
| 1993 | 32.2 C (90.0 F) |
| 1994 | 32.8 C (91.0 F) |
| 1995 | 36.7 C (98.1 F) |
| 1996 | 35.0 C (95.0 F) |
| 1997 | 34.4 C (93.9 F) |
| 1998 | 33.9 C (93.0 F) |
| 1999 | 36.1 C (97.0 F) |
| 2000 | 36.1 C (97.0 F) |
| 2001 | 34.4 C (93.9 F) |
| 2002 | 33.9 C (93.0 F) |
| 2003 | 36.1 C (97.0 F) |
| 2004 | 31.7 C (89.1 F) |
| 2005 | 33.9 C (93.0 F) |
| 2006 | 34.4 C (93.9 F) |
| 2007 | 34.4 C (93.9 F) |
| 2008 | 32.8 C (91.0 F) |
| 2009 | 34.4 C (93.9 F) |
| 2010 | 35.6 C (96.1 F) |
| 2011 | 36.7 C (98.1 F) |
| 2012 | 38.3 C (100.9 F) |
| 2013 | 36.1 C (97.0 F) |
| 2014 | 32.8 C (91.0 F) |
| 2015 | 35.6 C (96.1 F) |
| 2016 | 35.0 C (95.0 F) |
| 2017 | 34.4 C (93.9 F) |
| 2018 | 35.6 C (96.1 F) |
| 2019 | 33.9 C (93.0 F) |
| 2020 | 35.6 C (96.1 F) |
| 2021 | 38.3 C (100.9 F) |
| 2022 | 35.6 C (96.1 F) |
| 2023 | 37.2 C (99.0 F) |
| 2024 | 35.6 C (96.1 F) |
| 2025 | 33.9 C (93.0 F) |
| 2026 | 33.9 C (93.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1914 | -32.2 C (-26.0 F) |
| 1915 | -32.8 C (-27.0 F) |
| 1916 | -32.8 C (-27.0 F) |
| 1917 | -32.8 C (-27.0 F) |
| 1918 | -34.4 C (-29.9 F) |
| 1919 | -32.8 C (-27.0 F) |
| 1920 | -27.2 C (-17.0 F) |
| 1921 | -26.1 C (-15.0 F) |
| 1922 | -30.6 C (-23.1 F) |
| 1923 | -28.3 C (-18.9 F) |
| 1924 | -34.4 C (-29.9 F) |
| 1925 | -27.8 C (-18.0 F) |
| 1926 | -26.7 C (-16.1 F) |
| 1927 | -26.1 C (-15.0 F) |
| 1928 | -28.3 C (-18.9 F) |
| 1929 | -33.3 C (-27.9 F) |
| 1930 | -17.8 C (0.0 F) |
| 1931 | -21.1 C (-6.0 F) |
| 1932 | -29.4 C (-20.9 F) |
| 1933 | -32.8 C (-27.0 F) |
| 1934 | -26.1 C (-15.0 F) |
| 1935 | -32.8 C (-27.0 F) |
| 1936 | -33.9 C (-29.0 F) |
| 1937 | -28.9 C (-20.0 F) |
| 1938 | -25.6 C (-14.1 F) |
| 1939 | -23.9 C (-11.0 F) |
| 1940 | -27.8 C (-18.0 F) |
| 1941 | -26.1 C (-15.0 F) |
| 1942 | -32.2 C (-26.0 F) |
| 1943 | -31.1 C (-24.0 F) |
| 1944 | -25.0 C (-13.0 F) |
| 1945 | -26.7 C (-16.1 F) |
| 1946 | -27.8 C (-18.0 F) |
| 1947 | -26.1 C (-15.0 F) |
| 1948 | -31.7 C (-25.1 F) |
| 1949 | -26.7 C (-16.1 F) |
| 1950 | -28.9 C (-20.0 F) |
| 1951 | -30.0 C (-22.0 F) |
| 1952 | -28.3 C (-18.9 F) |
| 1953 | -24.4 C (-11.9 F) |
| 1954 | -27.8 C (-18.0 F) |
| 1955 | -27.8 C (-18.0 F) |
| 1956 | -28.9 C (-20.0 F) |
| 1957 | -26.7 C (-16.1 F) |
| 1958 | -28.3 C (-18.9 F) |
| 1959 | -28.3 C (-18.9 F) |
| 1960 | -25.6 C (-14.1 F) |
| 1961 | -27.8 C (-18.0 F) |
| 1962 | -28.9 C (-20.0 F) |
| 1963 | -31.7 C (-25.1 F) |
| 1964 | -23.9 C (-11.0 F) |
| 1965 | -27.8 C (-18.0 F) |
| 1966 | -32.8 C (-27.0 F) |
| 1967 | -26.1 C (-15.0 F) |
| 1968 | -27.8 C (-18.0 F) |
| 1969 | -26.1 C (-15.0 F) |
| 1970 | -33.3 C (-27.9 F) |
| 1971 | -30.0 C (-22.0 F) |
| 1972 | -28.9 C (-20.0 F) |
| 1973 | -28.9 C (-20.0 F) |
| 1974 | -31.7 C (-25.1 F) |
| 1975 | -26.7 C (-16.1 F) |
| 1976 | -23.9 C (-11.0 F) |
| 1977 | -26.7 C (-16.1 F) |
| 1978 | -28.9 C (-20.0 F) |
| 1979 | -31.1 C (-24.0 F) |
| 1980 | -23.9 C (-11.0 F) |
| 1981 | -28.9 C (-20.0 F) |
| 1982 | -33.3 C (-27.9 F) |
| 1983 | -30.0 C (-22.0 F) |
| 1984 | -27.2 C (-17.0 F) |
| 1985 | -30.0 C (-22.0 F) |
| 1986 | -27.8 C (-18.0 F) |
| 1987 | -23.3 C (-9.9 F) |
| 1988 | -29.4 C (-20.9 F) |
| 1989 | -30.0 C (-22.0 F) |
| 1990 | -28.9 C (-20.0 F) |
| 1991 | -27.8 C (-18.0 F) |
| 1992 | -23.9 C (-11.0 F) |
| 1993 | -27.8 C (-18.0 F) |
| 1994 | -31.1 C (-24.0 F) |
| 1995 | -22.8 C (-9.0 F) |
| 1996 | -35.0 C (-31.0 F) |
| 1997 | -26.7 C (-16.1 F) |
| 1998 | -22.2 C (-8.0 F) |
| 1999 | -29.4 C (-20.9 F) |
| 2000 | -28.3 C (-18.9 F) |
| 2001 | -25.0 C (-13.0 F) |
| 2002 | -21.1 C (-6.0 F) |
| 2003 | -24.4 C (-11.9 F) |
| 2004 | -26.7 C (-16.1 F) |
| 2005 | -26.1 C (-15.0 F) |
| 2006 | -26.7 C (-16.1 F) |
| 2007 | -25.6 C (-14.1 F) |
| 2008 | -27.8 C (-18.0 F) |
| 2009 | -33.3 C (-27.9 F) |
| 2010 | -29.4 C (-20.9 F) |
| 2011 | -28.3 C (-18.9 F) |
| 2012 | -25.0 C (-13.0 F) |
| 2013 | -25.6 C (-14.1 F) |
| 2014 | -29.4 C (-20.9 F) |
| 2015 | -27.2 C (-17.0 F) |
| 2016 | -28.3 C (-18.9 F) |
| 2017 | -25.6 C (-14.1 F) |
| 2018 | -30.0 C (-22.0 F) |
| 2019 | -32.8 C (-27.0 F) |
| 2020 | -25.0 C (-13.0 F) |
| 2021 | -29.4 C (-20.9 F) |
| 2022 | -29.4 C (-20.9 F) |
| 2023 | -27.2 C (-17.0 F) |
| 2024 | -26.7 C (-16.1 F) |
| 2025 | -28.9 C (-20.0 F) |
| 2026 | -28.3 C (-18.9 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1914 | 48.0 mm (1.9 in) |
| 1915 | 41.1 mm (1.6 in) |
| 1916 | 55.9 mm (2.2 in) |
| 1917 | 51.6 mm (2.0 in) |
| 1918 | 64.3 mm (2.5 in) |
| 1919 | 42.9 mm (1.7 in) |
| 1920 | 93.7 mm (3.7 in) |
| 1921 | 72.9 mm (2.9 in) |
| 1922 | 101.6 mm (4.0 in) |
| 1923 | 49.5 mm (1.9 in) |
| 1924 | 51.1 mm (2.0 in) |
| 1925 | 74.2 mm (2.9 in) |
| 1926 | 57.4 mm (2.3 in) |
| 1927 | 47.2 mm (1.9 in) |
| 1928 | 56.9 mm (2.2 in) |
| 1929 | 34.5 mm (1.4 in) |
| 1930 | 72.1 mm (2.8 in) |
| 1931 | 71.1 mm (2.8 in) |
| 1932 | 51.8 mm (2.0 in) |
| 1933 | 50.8 mm (2.0 in) |
| 1934 | 55.9 mm (2.2 in) |
| 1935 | 61.0 mm (2.4 in) |
| 1936 | 73.7 mm (2.9 in) |
| 1937 | 69.1 mm (2.7 in) |
| 1938 | 63.8 mm (2.5 in) |
| 1939 | 60.5 mm (2.4 in) |
| 1940 | 82.8 mm (3.3 in) |
| 1941 | 119.9 mm (4.7 in) |
| 1942 | 92.7 mm (3.6 in) |
| 1943 | 43.4 mm (1.7 in) |
| 1944 | 61.5 mm (2.4 in) |
| 1945 | 68.6 mm (2.7 in) |
| 1946 | 63.0 mm (2.5 in) |
| 1947 | 95.8 mm (3.8 in) |
| 1948 | 46.2 mm (1.8 in) |
| 1949 | 67.3 mm (2.6 in) |
| 1950 | 57.9 mm (2.3 in) |
| 1951 | 177.8 mm (7.0 in) |
| 1952 | 52.1 mm (2.1 in) |
| 1953 | 64.8 mm (2.6 in) |
| 1954 | 54.6 mm (2.1 in) |
| 1955 | 62.2 mm (2.4 in) |
| 1956 | 44.5 mm (1.8 in) |
| 1957 | 53.3 mm (2.1 in) |
| 1958 | 59.7 mm (2.4 in) |
| 1959 | 83.8 mm (3.3 in) |
| 1960 | 57.4 mm (2.3 in) |
| 1961 | 35.6 mm (1.4 in) |
| 1962 | 53.3 mm (2.1 in) |
| 1963 | 99.1 mm (3.9 in) |
| 1964 | 102.1 mm (4.0 in) |
| 1965 | 85.1 mm (3.4 in) |
| 1966 | 76.2 mm (3.0 in) |
| 1967 | 43.4 mm (1.7 in) |
| 1968 | 181.9 mm (7.2 in) |
| 1969 | 59.7 mm (2.4 in) |
| 1970 | 78.7 mm (3.1 in) |
| 1971 | 30.5 mm (1.2 in) |
| 1972 | 53.3 mm (2.1 in) |
| 1973 | 57.7 mm (2.3 in) |
| 1974 | 91.7 mm (3.6 in) |
| 1975 | 43.2 mm (1.7 in) |
| 1976 | 87.6 mm (3.4 in) |
| 1977 | 102.1 mm (4.0 in) |
| 1978 | 71.1 mm (2.8 in) |
| 1979 | 76.2 mm (3.0 in) |
| 1980 | 106.7 mm (4.2 in) |
| 1981 | 58.9 mm (2.3 in) |
| 1982 | 46.5 mm (1.8 in) |
| 1983 | 104.6 mm (4.1 in) |
| 1984 | 62.7 mm (2.5 in) |
| 1985 | 76.2 mm (3.0 in) |
| 1986 | 48.0 mm (1.9 in) |
| 1987 | 64.3 mm (2.5 in) |
| 1988 | 57.7 mm (2.3 in) |
| 1989 | 57.4 mm (2.3 in) |
| 1990 | 68.6 mm (2.7 in) |
| 1991 | 88.9 mm (3.5 in) |
| 1992 | 65.5 mm (2.6 in) |
| 1993 | 49.5 mm (1.9 in) |
| 1994 | 114.0 mm (4.5 in) |
| 1995 | 81.3 mm (3.2 in) |
| 1996 | 55.9 mm (2.2 in) |
| 1997 | 77.5 mm (3.1 in) |
| 1998 | 66.0 mm (2.6 in) |
| 1999 | 98.0 mm (3.9 in) |
| 2000 | 63.5 mm (2.5 in) |
| 2001 | 66.0 mm (2.6 in) |
| 2002 | 57.9 mm (2.3 in) |
| 2003 | 41.9 mm (1.6 in) |
| 2004 | 77.0 mm (3.0 in) |
| 2005 | 90.7 mm (3.6 in) |
| 2006 | 101.6 mm (4.0 in) |
| 2007 | 133.1 mm (5.2 in) |
| 2008 | 101.6 mm (4.0 in) |
| 2009 | 73.7 mm (2.9 in) |
| 2010 | 73.7 mm (2.9 in) |
| 2011 | 40.1 mm (1.6 in) |
| 2012 | 38.9 mm (1.5 in) |
| 2013 | 102.9 mm (4.1 in) |
| 2014 | 77.5 mm (3.1 in) |
| 2015 | 76.2 mm (3.0 in) |
| 2016 | 82.6 mm (3.3 in) |
| 2017 | 68.6 mm (2.7 in) |
| 2018 | 88.9 mm (3.5 in) |
| 2019 | 31.8 mm (1.3 in) |
| 2020 | 76.2 mm (3.0 in) |
| 2021 | 52.3 mm (2.1 in) |
| 2022 | 51.6 mm (2.0 in) |
| 2023 | 63.8 mm (2.5 in) |
| 2024 | 58.4 mm (2.3 in) |
| 2025 | 59.7 mm (2.4 in) |
| 2026 | 66.0 mm (2.6 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1914 | 111.2 mm (4.4 in) |
| 1915 | 97.0 mm (3.8 in) |
| 1916 | 73.9 mm (2.9 in) |
| 1917 | 85.9 mm (3.4 in) |
| 1918 | 104.2 mm (4.1 in) |
| 1919 | 67.3 mm (2.6 in) |
| 1920 | 106.1 mm (4.2 in) |
| 1921 | 113.1 mm (4.5 in) |
| 1922 | 158.6 mm (6.2 in) |
| 1923 | 90.4 mm (3.6 in) |
| 1924 | 86.4 mm (3.4 in) |
| 1925 | 87.9 mm (3.5 in) |
| 1926 | 79.0 mm (3.1 in) |
| 1927 | 69.6 mm (2.7 in) |
| 1928 | 75.2 mm (3.0 in) |
| 1929 | 36.8 mm (1.4 in) |
| 1930 | 84.0 mm (3.3 in) |
| 1931 | 97.2 mm (3.8 in) |
| 1932 | 66.0 mm (2.6 in) |
| 1933 | 78.7 mm (3.1 in) |
| 1934 | 86.4 mm (3.4 in) |
| 1935 | 86.4 mm (3.4 in) |
| 1936 | 120.7 mm (4.8 in) |
| 1937 | 91.5 mm (3.6 in) |
| 1938 | 115.8 mm (4.6 in) |
| 1939 | 64.8 mm (2.6 in) |
| 1940 | 118.6 mm (4.7 in) |
| 1941 | 125.2 mm (4.9 in) |
| 1942 | 151.6 mm (6.0 in) |
| 1943 | 57.4 mm (2.3 in) |
| 1944 | 81.3 mm (3.2 in) |
| 1945 | 90.4 mm (3.6 in) |
| 1946 | 89.4 mm (3.5 in) |
| 1947 | 104.1 mm (4.1 in) |
| 1948 | 76.0 mm (3.0 in) |
| 1949 | 117.9 mm (4.6 in) |
| 1950 | 124.5 mm (4.9 in) |
| 1951 | 222.2 mm (8.7 in) |
| 1952 | 56.2 mm (2.2 in) |
| 1953 | 85.6 mm (3.4 in) |
| 1954 | 114.3 mm (4.5 in) |
| 1955 | 95.7 mm (3.8 in) |
| 1956 | 65.3 mm (2.6 in) |
| 1957 | 68.5 mm (2.7 in) |
| 1958 | 64.5 mm (2.5 in) |
| 1959 | 139.7 mm (5.5 in) |
| 1960 | 91.7 mm (3.6 in) |
| 1961 | 65.7 mm (2.6 in) |
| 1962 | 87.1 mm (3.4 in) |
| 1963 | 119.7 mm (4.7 in) |
| 1964 | 147.0 mm (5.8 in) |
| 1965 | 125.2 mm (4.9 in) |
| 1966 | 91.5 mm (3.6 in) |
| 1967 | 114.5 mm (4.5 in) |
| 1968 | 192.8 mm (7.6 in) |
| 1969 | 136.9 mm (5.4 in) |
| 1970 | 113.0 mm (4.4 in) |
| 1971 | 63.5 mm (2.5 in) |
| 1972 | 133.4 mm (5.3 in) |
| 1973 | 113.1 mm (4.5 in) |
| 1974 | 103.4 mm (4.1 in) |
| 1975 | 60.7 mm (2.4 in) |
| 1976 | 137.6 mm (5.4 in) |
| 1977 | 131.3 mm (5.2 in) |
| 1978 | 111.9 mm (4.4 in) |
| 1979 | 82.1 mm (3.2 in) |
| 1980 | 191.6 mm (7.5 in) |
| 1981 | 84.6 mm (3.3 in) |
| 1982 | 80.6 mm (3.2 in) |
| 1983 | 144.5 mm (5.7 in) |
| 1984 | 84.3 mm (3.3 in) |
| 1985 | 76.7 mm (3.0 in) |
| 1986 | 70.8 mm (2.8 in) |
| 1987 | 103.9 mm (4.1 in) |
| 1988 | 67.4 mm (2.7 in) |
| 1989 | 71.9 mm (2.8 in) |
| 1990 | 111.4 mm (4.4 in) |
| 1991 | 121.4 mm (4.8 in) |
| 1992 | 99.8 mm (3.9 in) |
| 1993 | 95.7 mm (3.8 in) |
| 1994 | 134.4 mm (5.3 in) |
| 1995 | 81.3 mm (3.2 in) |
| 1996 | 105.2 mm (4.1 in) |
| 1997 | 83.3 mm (3.3 in) |
| 1998 | 100.8 mm (4.0 in) |
| 1999 | 184.9 mm (7.3 in) |
| 2000 | 99.1 mm (3.9 in) |
| 2001 | 120.1 mm (4.7 in) |
| 2002 | 104.6 mm (4.1 in) |
| 2003 | 108.8 mm (4.3 in) |
| 2004 | 142.1 mm (5.6 in) |
| 2005 | 179.6 mm (7.1 in) |
| 2006 | 127.5 mm (5.0 in) |
| 2007 | 208.8 mm (8.2 in) |
| 2008 | 141.9 mm (5.6 in) |
| 2009 | 95.8 mm (3.8 in) |
| 2010 | 160.1 mm (6.3 in) |
| 2011 | 57.9 mm (2.3 in) |
| 2012 | 55.2 mm (2.2 in) |
| 2013 | 119.9 mm (4.7 in) |
| 2014 | 116.4 mm (4.6 in) |
| 2015 | 80.8 mm (3.2 in) |
| 2016 | 111.7 mm (4.4 in) |
| 2017 | 69.6 mm (2.7 in) |
| 2018 | 133.7 mm (5.3 in) |
| 2019 | 72.4 mm (2.9 in) |
| 2020 | 140.7 mm (5.5 in) |
| 2021 | 108.5 mm (4.3 in) |
| 2022 | 54.9 mm (2.2 in) |
| 2023 | 75.4 mm (3.0 in) |
| 2024 | 102.1 mm (4.0 in) |
| 2025 | 110.6 mm (4.4 in) |
| 2026 | 103.6 mm (4.1 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1914 | 31 days |
| 1915 | 20 days |
| 1916 | 27 days |
| 1917 | 26 days |
| 1918 | 23 days |
| 1919 | 28 days |
| 1920 | 18 days |
| 1921 | 22 days |
| 1922 | 19 days |
| 1923 | 27 days |
| 1924 | 24 days |
| 1925 | 19 days |
| 1926 | 18 days |
| 1927 | 19 days |
| 1928 | 16 days |
| 1929 | 19 days |
| 1930 | 21 days |
| 1931 | 41 days |
| 1932 | 23 days |
| 1933 | 24 days |
| 1934 | 41 days |
| 1935 | 25 days |
| 1936 | 20 days |
| 1937 | 19 days |
| 1938 | 23 days |
| 1939 | 24 days |
| 1940 | 17 days |
| 1941 | 24 days |
| 1942 | 29 days |
| 1943 | 26 days |
| 1944 | 31 days |
| 1945 | 24 days |
| 1946 | 21 days |
| 1947 | 15 days |
| 1948 | 21 days |
| 1949 | 24 days |
| 1950 | 30 days |
| 1951 | 18 days |
| 1952 | 55 days |
| 1953 | 30 days |
| 1954 | 34 days |
| 1955 | 20 days |
| 1956 | 33 days |
| 1957 | 16 days |
| 1958 | 40 days |
| 1959 | 23 days |
| 1960 | 18 days |
| 1961 | 15 days |
| 1962 | 21 days |
| 1963 | 25 days |
| 1964 | 28 days |
| 1965 | 28 days |
| 1966 | 21 days |
| 1967 | 18 days |
| 1968 | 38 days |
| 1969 | 22 days |
| 1970 | 21 days |
| 1971 | 23 days |
| 1972 | 17 days |
| 1973 | 27 days |
| 1974 | 29 days |
| 1975 | 29 days |
| 1976 | 39 days |
| 1977 | 12 days |
| 1978 | 33 days |
| 1979 | 24 days |
| 1980 | 31 days |
| 1981 | 33 days |
| 1982 | 16 days |
| 1983 | 22 days |
| 1984 | 28 days |
| 1985 | 21 days |
| 1986 | 37 days |
| 1987 | 24 days |
| 1988 | 60 days |
| 1989 | 24 days |
| 1990 | 19 days |
| 1991 | 19 days |
| 1992 | 23 days |
| 1993 | 22 days |
| 1994 | 25 days |
| 1995 | 33 days |
| 1996 | 18 days |
| 1997 | 20 days |
| 1998 | 35 days |
| 1999 | 37 days |
| 2000 | 22 days |
| 2001 | 25 days |
| 2002 | 22 days |
| 2003 | 34 days |
| 2004 | 19 days |
| 2005 | 22 days |
| 2006 | 27 days |
| 2007 | 34 days |
| 2008 | 12 days |
| 2009 | 26 days |
| 2010 | 30 days |
| 2011 | 17 days |
| 2012 | 33 days |
| 2013 | 19 days |
| 2014 | 23 days |
| 2015 | 34 days |
| 2016 | 14 days |
| 2017 | 35 days |
| 2018 | 26 days |
| 2019 | 27 days |
| 2020 | 38 days |
| 2021 | 22 days |
| 2022 | 31 days |
| 2023 | 23 days |
| 2024 | 41 days |
| 2025 | 41 days |
| 2026 | 27 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
92 years with a frostAcross 92 years with a frost, the median last spring frost at Allison falls on 30 April and the median first autumn frost on 7 October, which leaves a median of 162 days between them.
In 1993 to 2024 the median growing season was 169 days. That is 13 days more than in 1915 to 1953.
Fitted over all years, the growing season changes by +2.1 days per decade at this station.
| Measure | Median, all years | Earliest period (1915 to 1953) | Recent period (1993 to 2024) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 30 April | 30 April | 27 April | 3 days earlier | -1.0 days per decade |
| First autumn frost | 7 October | 30 September | 11 October | 11 days later | +1.2 days per decade |
| Growing days | 162 days | 156 days | 169 days | 13 days more | +2.1 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
98 years, 1914 to 2025A day with at least 65.4 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 159.3 mm (6.3 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 65.4 mm (2.6 in) | |
| 5 years | 87.2 mm (3.4 in) | |
| 10 years | 103.0 mm (4.1 in) | |
| 25 years | 124.3 mm (4.9 in) | |
| 50 years | 141.4 mm (5.6 in) | |
| 100 years | 159.3 mm (6.3 in) | Longer than the 98 years of record |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 98 years of values from 1914 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: 181.9 mm (7.2 in) in 1968; 177.8 mm (7.0 in) in 1951; 133.1 mm (5.2 in) in 2007.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Allison, at 2007. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 2007 ran 0.3 C (0.5 F) lower than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 2007 | -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
2010 to 2024 against 1961 to 1990Over 2010 to 2024, Allison had a mean temperature of 8.4 C (47.1 F) and 876.0 mm (34.5 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Paw Paw 2S (United States, 337 km away), Watertown Wwtp (United States, 334 km away) and Cascade (United States, 155 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Paw Paw 2S | United States | 337 km (209 mi) | 8.4 C (47.1 F) | 907.5 mm (35.7 in) | 0.76 |
| Watertown Wwtp | United States | 334 km (208 mi) | 8.3 C (46.9 F) | 834.3 mm (32.8 in) | 0.78 |
| Cascade | United States | 155 km (96 mi) | 8.3 C (46.9 F) | 844.2 mm (33.2 in) | 0.82 |
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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-15).