Decatur Wtp Weather Records (USC00112193)
Record envelope, standing records and threshold days for Decatur Wtp (USC00112193), Illinois, United States, with 134 years of record.
Key Facts for Decatur Wtp
- Decatur Wtp (USC00112193) is a weather station in Illinois, United States at 39.83 latitude and -88.95 longitude, 195 m (639 ft) above sea level.
- The station reports from 1893 to 2026, 134 years of record.
- 1,464 records set at Decatur Wtp still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Decatur Wtp set a daily record low maximum temperature of 21.7 C (71.1 F) on 3 August 2026.
About the Station
- Location: Illinois, United States, 39.83 latitude, -88.95 longitude.
- Elevation: 195 m (639 ft).
- Period of record: 1893 to 2026, 134 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 | 22.8 C (73.0 F) | -30.6 C (-23.1 F) | 16.7 C (62.1 F) | -13.9 C (7.0 F) |
| Feb | 24.4 C (75.9 F) | -31.7 C (-25.1 F) | 20.0 C (68.0 F) | -15.6 C (3.9 F) |
| Mar | 31.7 C (89.1 F) | -23.3 C (-9.9 F) | 29.4 C (84.9 F) | -13.3 C (8.1 F) |
| Apr | 34.4 C (93.9 F) | -9.4 C (15.1 F) | 27.8 C (82.0 F) | 2.2 C (36.0 F) |
| May | 38.3 C (100.9 F) | -3.9 C (25.0 F) | 30.0 C (86.0 F) | 2.8 C (37.0 F) |
| Jun | 40.6 C (105.1 F) | 0.0 C (32.0 F) | 31.7 C (89.1 F) | 10.0 C (50.0 F) |
| Jul | 45.0 C (113.0 F) | 7.2 C (45.0 F) | 33.3 C (91.9 F) | 12.2 C (54.0 F) |
| Aug | 41.1 C (106.0 F) | 1.7 C (35.1 F) | 31.7 C (89.1 F) | 14.4 C (57.9 F) |
| Sep | 40.0 C (104.0 F) | -6.7 C (19.9 F) | n/a | n/a |
| Oct | 35.6 C (96.1 F) | -11.1 C (12.0 F) | n/a | n/a |
| Nov | 28.3 C (82.9 F) | -19.4 C (-2.9 F) | n/a | n/a |
| Dec | 22.2 C (72.0 F) | -30.0 C (-22.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1893 | 3 |
| 1894 | 23 |
| 1895 | 28 |
| 1896 | 9 |
| 1897 | 23 |
| 1898 | 7 |
| 1899 | 24 |
| 1900 | 8 |
| 1901 | 18 |
| 1902 | 14 |
| 1903 | 13 |
| 1904 | 11 |
| 1905 | 11 |
| 1906 | 13 |
| 1907 | 15 |
| 1908 | 10 |
| 1909 | 15 |
| 1910 | 15 |
| 1911 | 13 |
| 1912 | 10 |
| 1913 | 23 |
| 1914 | 12 |
| 1915 | 14 |
| 1916 | 12 |
| 1917 | 21 |
| 1918 | 21 |
| 1919 | 5 |
| 1920 | 5 |
| 1921 | 10 |
| 1922 | 10 |
| 1923 | 12 |
| 1924 | 12 |
| 1925 | 26 |
| 1926 | 5 |
| 1927 | 14 |
| 1928 | 16 |
| 1929 | 14 |
| 1930 | 26 |
| 1931 | 19 |
| 1932 | 11 |
| 1933 | 14 |
| 1934 | 32 |
| 1935 | 7 |
| 1936 | 36 |
| 1937 | 7 |
| 1938 | 12 |
| 1939 | 15 |
| 1940 | 10 |
| 1941 | 7 |
| 1942 | 10 |
| 1943 | 10 |
| 1944 | 4 |
| 1945 | 11 |
| 1946 | 8 |
| 1947 | 8 |
| 1948 | 8 |
| 1949 | 6 |
| 1950 | 17 |
| 1951 | 10 |
| 1952 | 7 |
| 1953 | 17 |
| 1954 | 18 |
| 1955 | 17 |
| 1956 | 8 |
| 1957 | 5 |
| 1958 | 4 |
| 1959 | 9 |
| 1960 | 14 |
| 1961 | 5 |
| 1962 | 15 |
| 1963 | 7 |
| 1964 | 7 |
| 1965 | 3 |
| 1966 | 6 |
| 1967 | 11 |
| 1968 | 6 |
| 1969 | 2 |
| 1970 | 10 |
| 1971 | 2 |
| 1972 | 11 |
| 1973 | 7 |
| 1974 | 16 |
| 1975 | 6 |
| 1976 | 12 |
| 1977 | 11 |
| 1978 | 7 |
| 1979 | 10 |
| 1980 | 14 |
| 1981 | 7 |
| 1982 | 19 |
| 1983 | 19 |
| 1984 | 11 |
| 1985 | 8 |
| 1986 | 10 |
| 1987 | 17 |
| 1988 | 14 |
| 1989 | 18 |
| 1990 | 16 |
| 1991 | 14 |
| 1992 | 8 |
| 1993 | 5 |
| 1994 | 5 |
| 1995 | 4 |
| 1996 | 13 |
| 1997 | 2 |
| 1998 | 3 |
| 1999 | 6 |
| 2000 | 11 |
| 2001 | 6 |
| 2002 | 6 |
| 2003 | 2 |
| 2004 | 6 |
| 2005 | 4 |
| 2006 | 4 |
| 2007 | 13 |
| 2008 | 6 |
| 2009 | 8 |
| 2010 | 1 |
| 2011 | 7 |
| 2012 | 10 |
| 2013 | 8 |
| 2014 | 15 |
| 2015 | 11 |
| 2016 | 5 |
| 2017 | 9 |
| 2018 | 12 |
| 2019 | 14 |
| 2020 | 4 |
| 2021 | 7 |
| 2022 | 8 |
| 2023 | 1 |
| 2024 | 4 |
| 2025 | 9 |
| 2026 | 4 |
All-Time Record Progression
8 new records| Date | Kind | Detail |
|---|---|---|
| 1936-07-14 | Record high maximum temperature | Record high maximum temperature 43.3 C (109.9 F) |
| 1936-07-15 | Record high minimum temperature | Record high minimum temperature 26.7 C (80.1 F) |
| 1954-07-14 | Record high maximum temperature | Record high maximum temperature 45.0 C (113.0 F) |
| 1965-06-02 | Record daily precipitation | Record daily precipitation 120.9 mm (4.8 in) |
| 1973-12-20 | Record snow depth | Record snow depth 55.9 cm (22.0 in) |
| 1985-01-20 | Record low maximum temperature | Record low maximum temperature -21.1 C (-6.0 F) |
| 1992-07-26 | Record daily precipitation | Record daily precipitation 129.8 mm (5.1 in) |
| 2008-09-14 | Record daily precipitation | Record daily precipitation 148.3 mm (5.8 in) |
Wettest Day of Each Month
Sep: 148.3 mm (5.8 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 57.2 mm (2.3 in) | 3 January 1950 |
| Feb | 68.6 mm (2.7 in) | 5 February 2008 |
| Mar | 108.7 mm (4.3 in) | 27 March 1898 |
| Apr | 90.9 mm (3.6 in) | 12 April 1979 |
| May | 107.2 mm (4.2 in) | 19 May 1974 |
| Jun | 120.9 mm (4.8 in) | 2 June 1965 |
| Jul | 129.8 mm (5.1 in) | 26 July 1992 |
| Aug | 119.6 mm (4.7 in) | 2 August 1978 |
| Sep | 148.3 mm (5.8 in) | 14 September 2008 |
| Oct | 103.9 mm (4.1 in) | 22 October 1983 |
| Nov | 94.0 mm (3.7 in) | 2 November 1936 |
| Dec | 72.4 mm (2.9 in) | 18 December 1895 |
Period of Record Coverage
1893 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1893 | 31 | 8% | No |
| 1894 | 365 | 100% | Yes |
| 1895 | 365 | 100% | Yes |
| 1896 | 365 | 100% | Yes |
| 1897 | 364 | 100% | Yes |
| 1898 | 365 | 100% | Yes |
| 1899 | 365 | 100% | Yes |
| 1900 | 336 | 92% | Yes |
| 1901 | 365 | 100% | Yes |
| 1902 | 365 | 100% | Yes |
| 1903 | 364 | 100% | Yes |
| 1904 | 364 | 99% | Yes |
| 1905 | 356 | 98% | Yes |
| 1906 | 357 | 98% | Yes |
| 1907 | 360 | 99% | Yes |
| 1908 | 361 | 99% | Yes |
| 1909 | 359 | 98% | Yes |
| 1910 | 365 | 100% | Yes |
| 1911 | 364 | 100% | Yes |
| 1912 | 366 | 100% | Yes |
| 1913 | 363 | 99% | Yes |
| 1914 | 359 | 98% | Yes |
| 1915 | 356 | 98% | Yes |
| 1916 | 364 | 99% | Yes |
| 1917 | 363 | 99% | Yes |
| 1918 | 364 | 100% | Yes |
| 1919 | 365 | 100% | Yes |
| 1920 | 366 | 100% | Yes |
| 1921 | 365 | 100% | Yes |
| 1922 | 365 | 100% | Yes |
| 1923 | 364 | 100% | Yes |
| 1924 | 365 | 100% | Yes |
| 1925 | 365 | 100% | Yes |
| 1926 | 365 | 100% | Yes |
| 1927 | 365 | 100% | Yes |
| 1928 | 366 | 100% | Yes |
| 1929 | 365 | 100% | Yes |
| 1930 | 364 | 100% | Yes |
| 1931 | 364 | 100% | Yes |
| 1932 | 366 | 100% | Yes |
| 1933 | 365 | 100% | Yes |
| 1934 | 364 | 100% | Yes |
| 1935 | 365 | 100% | Yes |
| 1936 | 366 | 100% | Yes |
| 1937 | 365 | 100% | Yes |
| 1938 | 365 | 100% | Yes |
| 1939 | 365 | 100% | Yes |
| 1940 | 365 | 100% | Yes |
| 1941 | 361 | 99% | Yes |
| 1942 | 365 | 100% | Yes |
| 1943 | 363 | 99% | Yes |
| 1944 | 362 | 99% | Yes |
| 1945 | 363 | 99% | Yes |
| 1946 | 364 | 100% | Yes |
| 1947 | 365 | 100% | Yes |
| 1948 | 364 | 99% | Yes |
| 1949 | 364 | 100% | Yes |
| 1950 | 364 | 100% | Yes |
| 1951 | 362 | 99% | Yes |
| 1952 | 365 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 364 | 100% | Yes |
| 1955 | 364 | 100% | Yes |
| 1956 | 365 | 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 | 360 | 99% | Yes |
| 1964 | 364 | 99% | Yes |
| 1965 | 364 | 100% | Yes |
| 1966 | 364 | 100% | Yes |
| 1967 | 364 | 100% | Yes |
| 1968 | 365 | 100% | Yes |
| 1969 | 364 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 364 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 363 | 99% | Yes |
| 1976 | 365 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 364 | 100% | Yes |
| 1979 | 363 | 99% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 362 | 99% | Yes |
| 1982 | 363 | 99% | Yes |
| 1983 | 358 | 98% | Yes |
| 1984 | 361 | 99% | Yes |
| 1985 | 262 | 72% | No |
| 1986 | 147 | 40% | No |
| 1987 | 352 | 96% | Yes |
| 1988 | 358 | 98% | Yes |
| 1989 | 362 | 99% | Yes |
| 1990 | 359 | 98% | Yes |
| 1991 | 328 | 90% | No |
| 1992 | 361 | 99% | Yes |
| 1993 | 334 | 92% | Yes |
| 1994 | 364 | 100% | Yes |
| 1995 | 360 | 99% | Yes |
| 1996 | 362 | 99% | Yes |
| 1997 | 301 | 82% | No |
| 1998 | 322 | 88% | No |
| 1999 | 358 | 98% | Yes |
| 2000 | 354 | 97% | Yes |
| 2001 | 352 | 96% | Yes |
| 2002 | 359 | 98% | Yes |
| 2003 | 362 | 99% | Yes |
| 2004 | 364 | 99% | Yes |
| 2005 | 364 | 100% | Yes |
| 2006 | 362 | 99% | Yes |
| 2007 | 343 | 94% | Yes |
| 2008 | 342 | 93% | Yes |
| 2009 | 363 | 99% | Yes |
| 2010 | 351 | 96% | Yes |
| 2011 | 357 | 98% | Yes |
| 2012 | 358 | 98% | Yes |
| 2013 | 362 | 99% | Yes |
| 2014 | 364 | 100% | Yes |
| 2015 | 360 | 99% | Yes |
| 2016 | 362 | 99% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 363 | 99% | Yes |
| 2019 | 361 | 99% | Yes |
| 2020 | 364 | 99% | Yes |
| 2021 | 361 | 99% | Yes |
| 2022 | 359 | 98% | Yes |
| 2023 | 341 | 93% | Yes |
| 2024 | 360 | 98% | Yes |
| 2025 | 358 | 98% | Yes |
| 2026 | 228 | 62% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 3 August 2026 | Decatur Wtp, US | daily low max | 21.7 C (71.1 F) | 1.1 C (2.0 F) | 52 years | 28 of 100 (Routine) |
| 1 August 2026 | Decatur Wtp, US | daily low max (Tie) | 21.7 C (71.1 F) | tie | 5 years | 2 of 100 (Routine) |
| 4 July 2026 | Decatur Wtp, US | daily rain | 58.9 mm (2.3 in) | 10.6 mm (0.4 in) | 16 years | 22 of 100 (Routine) |
| 17 June 2026 | Decatur Wtp, US | daily rain | 49.5 mm (1.9 in) | 15.7 mm (0.6 in) | 79 years | 43 of 100 (Notable) |
| 27 April 2026 | Decatur Wtp, US | daily rain | 53.1 mm (2.1 in) | 9.7 mm (0.38 in) | 24 years | 25 of 100 (Routine) |
| 13 April 2026 | Decatur Wtp, US | daily high min | 17.2 C (63.0 F) | 1.6 C (2.9 F) | 109 years | 42 of 100 (Notable) |
| 26 March 2026 | Decatur Wtp, US | daily high max | 29.4 C (84.9 F) | 1.1 C (2.0 F) | 119 years | 41 of 100 (Notable) |
| 10 March 2026 | Decatur Wtp, US | daily high min (Tie) | 13.3 C (55.9 F) | tie | 36 years | 5 of 100 (Routine) |
| 3 March 2026 | Decatur Wtp, US | daily rain | 63.0 mm (2.5 in) | 20.8 mm (0.8 in) | 3 years | 30 of 100 (Routine) |
| 25 January 2026 | Decatur Wtp, US | daily snowfall | 9.9 cm (3.9 in) | 2.3 cm (0.9 in) | 122 years | 45 of 100 (Notable) |
| 9 January 2026 | Decatur Wtp, US | daily high max | 16.1 C (61.0 F) | 0.5 C (0.9 F) | 87 years | 36 of 100 (Notable) |
| 25 December 2025 | Decatur Wtp, US | daily high min | 8.3 C (46.9 F) | 1.6 C (2.9 F) | 88 years | 38 of 100 (Notable) |
| 14 December 2025 | Decatur Wtp, US | daily low min | -23.9 C (-11.0 F) | 2.2 C (4.0 F) | 124 years | 43 of 100 (Notable) |
| 14 December 2025 | Decatur Wtp, US | daily low max | -17.2 C (1.0 F) | 5.5 C (9.9 F) | 62 years | 36 of 100 (Notable) |
| 14 December 2025 | Decatur Wtp, US | daily snow depth (Tie) | 17.8 cm (7.0 in) | tie | 108 years | 10 of 100 (Routine) |
| 13 December 2025 | Decatur Wtp, US | daily snow depth | 20.3 cm (8.0 in) | 5.1 cm (2.0 in) | 80 years | 41 of 100 (Notable) |
| 13 December 2025 | Decatur Wtp, US | daily snowfall | 15.2 cm (6.0 in) | 3.8 cm (1.5 in) | 24 years | 25 of 100 (Routine) |
| 11 December 2025 | Decatur Wtp, US | daily snowfall (Tie) | 10.2 cm (4.0 in) | tie | 64 years | 7 of 100 (Routine) |
| 5 December 2025 | Decatur Wtp, US | daily low min | -20.0 C (-4.0 F) | 3.3 C (5.9 F) | 129 years | 45 of 100 (Notable) |
| 5 December 2025 | Decatur Wtp, US | daily snow depth (Tie) | 10.2 cm (4.0 in) | tie | 116 years | 10 of 100 (Routine) |
Climate Trend
123 complete years, 1894 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1894 | 12.3 C | +0.42 C |
| 1895 | 11.1 C | -0.76 C |
| 1896 | 12.3 C | +0.49 C |
| 1897 | 11.6 C | -0.25 C |
| 1898 | 11.8 C | -0.06 C |
| 1899 | 11.5 C | -0.33 C |
| 1901 | 11.2 C | -0.66 C |
| 1902 | 11.0 C | -0.82 C |
| 1903 | 11.0 C | -0.85 C |
| 1904 | 10.4 C | -1.46 C |
| 1905 | 11.1 C | -0.77 C |
| 1906 | 11.4 C | -0.44 C |
| 1907 | 10.8 C | -1.08 C |
| 1908 | 12.1 C | +0.22 C |
| 1909 | 11.2 C | -0.66 C |
| 1910 | 10.9 C | -0.93 C |
| 1911 | 12.0 C | +0.18 C |
| 1912 | 10.7 C | -1.14 C |
| 1913 | 12.5 C | +0.65 C |
| 1914 | 12.0 C | +0.11 C |
| 1915 | 11.6 C | -0.27 C |
| 1916 | 11.5 C | -0.34 C |
| 1917 | 9.9 C | -1.95 C |
| 1918 | 11.7 C | -0.11 C |
| 1919 | 12.2 C | +0.39 C |
| 1920 | 11.7 C | -0.14 C |
| 1921 | 14.0 C | +2.15 C |
| 1922 | 12.7 C | +0.89 C |
| 1923 | 12.1 C | +0.27 C |
| 1924 | 10.7 C | -1.20 C |
| 1925 | 12.1 C | +0.25 C |
| 1926 | 11.2 C | -0.69 C |
| 1927 | 12.0 C | +0.15 C |
| 1928 | 11.7 C | -0.18 C |
| 1929 | 10.9 C | -0.98 C |
| 1930 | 12.5 C | +0.64 C |
| 1931 | 14.1 C | +2.29 C |
| 1932 | 12.3 C | +0.45 C |
| 1933 | 13.3 C | +1.49 C |
| 1934 | 12.9 C | +1.07 C |
| 1935 | 11.8 C | -0.03 C |
| 1936 | 12.0 C | +0.18 C |
| 1937 | 11.3 C | -0.58 C |
| 1938 | 13.5 C | +1.62 C |
| 1939 | 12.9 C | +1.07 C |
| 1940 | 11.4 C | -0.45 C |
| 1941 | 13.0 C | +1.14 C |
| 1942 | 12.0 C | +0.12 C |
| 1943 | 11.6 C | -0.23 C |
| 1944 | 12.2 C | +0.36 C |
| 1945 | 11.3 C | -0.56 C |
| 1946 | 13.0 C | +1.17 C |
| 1947 | 11.6 C | -0.23 C |
| 1948 | 11.9 C | +0.09 C |
| 1949 | 12.7 C | +0.88 C |
| 1950 | 10.9 C | -0.95 C |
| 1951 | 11.0 C | -0.85 C |
| 1952 | 12.5 C | +0.66 C |
| 1953 | 13.2 C | +1.33 C |
| 1954 | 13.3 C | +1.45 C |
| 1955 | 12.4 C | +0.57 C |
| 1956 | 12.5 C | +0.62 C |
| 1957 | 12.1 C | +0.26 C |
| 1958 | 11.2 C | -0.61 C |
| 1959 | 12.3 C | +0.46 C |
| 1960 | 11.1 C | -0.79 C |
| 1961 | 11.5 C | -0.39 C |
| 1962 | 11.6 C | -0.29 C |
| 1963 | 11.5 C | -0.39 C |
| 1964 | 12.5 C | +0.61 C |
| 1965 | 12.2 C | +0.37 C |
| 1966 | 11.4 C | -0.47 C |
| 1967 | 11.3 C | -0.51 C |
| 1968 | 11.7 C | -0.17 C |
| 1969 | 11.2 C | -0.61 C |
| 1970 | 11.5 C | -0.40 C |
| 1971 | 11.9 C | 0.00 C |
| 1972 | 11.0 C | -0.88 C |
| 1973 | 12.6 C | +0.75 C |
| 1974 | 11.9 C | 0.00 C |
| 1975 | 12.2 C | +0.38 C |
| 1976 | 11.1 C | -0.78 C |
| 1977 | 11.4 C | -0.42 C |
| 1978 | 10.4 C | -1.48 C |
| 1979 | 10.5 C | -1.37 C |
| 1980 | 11.4 C | -0.44 C |
| 1981 | 11.5 C | -0.38 C |
| 1982 | 11.0 C | -0.88 C |
| 1983 | 11.8 C | -0.07 C |
| 1984 | 11.5 C | -0.39 C |
| 1987 | 12.7 C | +0.84 C |
| 1988 | 11.4 C | -0.48 C |
| 1989 | 10.6 C | -1.22 C |
| 1990 | 12.5 C | +0.66 C |
| 1992 | 11.9 C | +0.03 C |
| 1994 | 11.7 C | -0.11 C |
| 1995 | 11.5 C | -0.40 C |
| 1996 | 10.9 C | -0.95 C |
| 1999 | 12.9 C | +1.06 C |
| 2000 | 12.5 C | +0.64 C |
| 2002 | 12.8 C | +0.94 C |
| 2003 | 11.9 C | +0.06 C |
| 2004 | 12.3 C | +0.48 C |
| 2005 | 12.8 C | +0.92 C |
| 2006 | 13.2 C | +1.35 C |
| 2008 | 11.8 C | -0.09 C |
| 2009 | 12.1 C | +0.21 C |
| 2010 | 11.7 C | -0.11 C |
| 2011 | 12.0 C | +0.19 C |
| 2012 | 13.4 C | +1.52 C |
| 2013 | 10.8 C | -1.04 C |
| 2014 | 9.7 C | -2.17 C |
| 2015 | 11.8 C | -0.05 C |
| 2016 | 12.7 C | +0.89 C |
| 2017 | 12.7 C | +0.86 C |
| 2018 | 11.7 C | -0.17 C |
| 2019 | 11.5 C | -0.39 C |
| 2020 | 12.0 C | +0.18 C |
| 2021 | 12.2 C | +0.37 C |
| 2022 | 11.5 C | -0.36 C |
| 2023 | 13.0 C | +1.10 C |
| 2024 | 12.9 C | +1.06 C |
| 2025 | 11.8 C | -0.02 C |
The fitted trend in annual mean temperature here over 1894 to 2025 is 0.02 C (-0.01 to 0.06) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.04 F (-0.03 to 0.11) per decade. The slope is a straight line fitted to 123 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 (-0.01 to 0.06) per decade | 0.04 F (-0.03 to 0.11) per decade | 1894 to 2025 | 123 | Not clearly different from zero |
| Mean daily maximum | -0.05 C (-0.09 to 0.00) per decade | -0.08 F (-0.16 to -0.01) per decade | 1894 to 2025 | 123 | Fall |
| Mean daily minimum | 0.1 C (0.1 to 0.1) per decade | 0.2 F (0.1 to 0.3) per decade | 1894 to 2025 | 123 | 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) | 45.0 C (113.0 F) | 1954 | 36.7 C (98.1 F) | 134 |
| Coldest night (TNn) | -31.7 C (-25.1 F) | 1905 | -22.2 C (-8.0 F) | 134 |
| Wettest day (Rx1day) | 148.3 mm (5.8 in) | 2008 | 63.8 mm (2.5 in) | 134 |
| Wettest five days (Rx5day) | 219.0 mm (8.6 in) | 1992 | 99.4 mm (3.9 in) | 134 |
| Longest dry spell (CDD) | 40 days | 1956 | 20 days | 134 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1893 | 17.8 C (64.0 F) |
| 1894 | 37.8 C (100.0 F) |
| 1895 | 37.8 C (100.0 F) |
| 1896 | 35.6 C (96.1 F) |
| 1897 | 38.3 C (100.9 F) |
| 1898 | 37.2 C (99.0 F) |
| 1899 | 39.4 C (102.9 F) |
| 1900 | 36.1 C (97.0 F) |
| 1901 | 42.8 C (109.0 F) |
| 1902 | 35.0 C (95.0 F) |
| 1903 | 36.7 C (98.1 F) |
| 1904 | 34.4 C (93.9 F) |
| 1905 | 37.2 C (99.0 F) |
| 1906 | 35.6 C (96.1 F) |
| 1907 | 35.6 C (96.1 F) |
| 1908 | 36.7 C (98.1 F) |
| 1909 | 36.7 C (98.1 F) |
| 1910 | 36.1 C (97.0 F) |
| 1911 | 38.9 C (102.0 F) |
| 1912 | 37.2 C (99.0 F) |
| 1913 | 40.6 C (105.1 F) |
| 1914 | 40.0 C (104.0 F) |
| 1915 | 33.3 C (91.9 F) |
| 1916 | 40.0 C (104.0 F) |
| 1917 | 36.7 C (98.1 F) |
| 1918 | 40.6 C (105.1 F) |
| 1919 | 37.8 C (100.0 F) |
| 1920 | 38.3 C (100.9 F) |
| 1921 | 39.4 C (102.9 F) |
| 1922 | 38.9 C (102.0 F) |
| 1923 | 39.4 C (102.9 F) |
| 1924 | 37.2 C (99.0 F) |
| 1925 | 40.6 C (105.1 F) |
| 1926 | 38.3 C (100.9 F) |
| 1927 | 36.1 C (97.0 F) |
| 1928 | 35.6 C (96.1 F) |
| 1929 | 36.7 C (98.1 F) |
| 1930 | 41.7 C (107.1 F) |
| 1931 | 41.1 C (106.0 F) |
| 1932 | 37.2 C (99.0 F) |
| 1933 | 40.0 C (104.0 F) |
| 1934 | 41.7 C (107.1 F) |
| 1935 | 37.2 C (99.0 F) |
| 1936 | 43.3 C (109.9 F) |
| 1937 | 37.2 C (99.0 F) |
| 1938 | 37.8 C (100.0 F) |
| 1939 | 38.3 C (100.9 F) |
| 1940 | 37.8 C (100.0 F) |
| 1941 | 37.8 C (100.0 F) |
| 1942 | 35.6 C (96.1 F) |
| 1943 | 37.2 C (99.0 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 | 36.1 C (97.0 F) |
| 1949 | 36.7 C (98.1 F) |
| 1950 | 35.6 C (96.1 F) |
| 1951 | 36.7 C (98.1 F) |
| 1952 | 42.2 C (108.0 F) |
| 1953 | 40.6 C (105.1 F) |
| 1954 | 45.0 C (113.0 F) |
| 1955 | 37.8 C (100.0 F) |
| 1956 | 36.1 C (97.0 F) |
| 1957 | 35.6 C (96.1 F) |
| 1958 | 35.0 C (95.0 F) |
| 1959 | 36.1 C (97.0 F) |
| 1960 | 36.7 C (98.1 F) |
| 1961 | 35.0 C (95.0 F) |
| 1962 | 37.8 C (100.0 F) |
| 1963 | 36.1 C (97.0 F) |
| 1964 | 38.3 C (100.9 F) |
| 1965 | 36.1 C (97.0 F) |
| 1966 | 40.0 C (104.0 F) |
| 1967 | 35.0 C (95.0 F) |
| 1968 | 36.1 C (97.0 F) |
| 1969 | 35.0 C (95.0 F) |
| 1970 | 36.7 C (98.1 F) |
| 1971 | 36.1 C (97.0 F) |
| 1972 | 34.4 C (93.9 F) |
| 1973 | 36.1 C (97.0 F) |
| 1974 | 36.7 C (98.1 F) |
| 1975 | 35.6 C (96.1 F) |
| 1976 | 37.2 C (99.0 F) |
| 1977 | 36.7 C (98.1 F) |
| 1978 | 36.1 C (97.0 F) |
| 1979 | 35.6 C (96.1 F) |
| 1980 | 40.0 C (104.0 F) |
| 1981 | 35.0 C (95.0 F) |
| 1982 | 35.6 C (96.1 F) |
| 1983 | 41.1 C (106.0 F) |
| 1984 | 36.7 C (98.1 F) |
| 1985 | 35.6 C (96.1 F) |
| 1986 | 34.4 C (93.9 F) |
| 1987 | 39.4 C (102.9 F) |
| 1988 | 40.6 C (105.1 F) |
| 1989 | 36.7 C (98.1 F) |
| 1990 | 36.7 C (98.1 F) |
| 1991 | 36.7 C (98.1 F) |
| 1992 | 35.0 C (95.0 F) |
| 1993 | 35.0 C (95.0 F) |
| 1994 | 36.1 C (97.0 F) |
| 1995 | 38.9 C (102.0 F) |
| 1996 | 35.6 C (96.1 F) |
| 1997 | 35.0 C (95.0 F) |
| 1998 | 35.0 C (95.0 F) |
| 1999 | 37.2 C (99.0 F) |
| 2000 | 37.8 C (100.0 F) |
| 2001 | 36.7 C (98.1 F) |
| 2002 | 37.8 C (100.0 F) |
| 2003 | 36.7 C (98.1 F) |
| 2004 | 33.9 C (93.0 F) |
| 2005 | 36.1 C (97.0 F) |
| 2006 | 36.7 C (98.1 F) |
| 2007 | 37.8 C (100.0 F) |
| 2008 | 34.4 C (93.9 F) |
| 2009 | 35.6 C (96.1 F) |
| 2010 | 35.6 C (96.1 F) |
| 2011 | 37.2 C (99.0 F) |
| 2012 | 38.9 C (102.0 F) |
| 2013 | 36.1 C (97.0 F) |
| 2014 | 32.8 C (91.0 F) |
| 2015 | 34.4 C (93.9 F) |
| 2016 | 33.9 C (93.0 F) |
| 2017 | 35.0 C (95.0 F) |
| 2018 | 35.6 C (96.1 F) |
| 2019 | 34.4 C (93.9 F) |
| 2020 | 33.3 C (91.9 F) |
| 2021 | 35.0 C (95.0 F) |
| 2022 | 37.2 C (99.0 F) |
| 2023 | 35.6 C (96.1 F) |
| 2024 | 35.0 C (95.0 F) |
| 2025 | 35.0 C (95.0 F) |
| 2026 | 33.3 C (91.9 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1893 | -21.1 C (-6.0 F) |
| 1894 | -30.0 C (-22.0 F) |
| 1895 | -29.4 C (-20.9 F) |
| 1896 | -19.4 C (-2.9 F) |
| 1897 | -25.0 C (-13.0 F) |
| 1898 | -20.0 C (-4.0 F) |
| 1899 | -30.0 C (-22.0 F) |
| 1900 | -20.6 C (-5.1 F) |
| 1901 | -26.1 C (-15.0 F) |
| 1902 | -24.4 C (-11.9 F) |
| 1903 | -27.8 C (-18.0 F) |
| 1904 | -26.1 C (-15.0 F) |
| 1905 | -31.7 C (-25.1 F) |
| 1906 | -22.8 C (-9.0 F) |
| 1907 | -20.0 C (-4.0 F) |
| 1908 | -18.3 C (-0.9 F) |
| 1909 | -23.3 C (-9.9 F) |
| 1910 | -25.0 C (-13.0 F) |
| 1911 | -18.3 C (-0.9 F) |
| 1912 | -30.0 C (-22.0 F) |
| 1913 | -21.1 C (-6.0 F) |
| 1914 | -26.1 C (-15.0 F) |
| 1915 | -27.2 C (-17.0 F) |
| 1916 | -23.3 C (-9.9 F) |
| 1917 | -25.6 C (-14.1 F) |
| 1918 | -29.4 C (-20.9 F) |
| 1919 | -21.7 C (-7.1 F) |
| 1920 | -20.6 C (-5.1 F) |
| 1921 | -13.9 C (7.0 F) |
| 1922 | -21.1 C (-6.0 F) |
| 1923 | -20.0 C (-4.0 F) |
| 1924 | -28.3 C (-18.9 F) |
| 1925 | -21.1 C (-6.0 F) |
| 1926 | -19.4 C (-2.9 F) |
| 1927 | -30.0 C (-22.0 F) |
| 1928 | -25.0 C (-13.0 F) |
| 1929 | -21.7 C (-7.1 F) |
| 1930 | -29.4 C (-20.9 F) |
| 1931 | -14.4 C (6.1 F) |
| 1932 | -22.2 C (-8.0 F) |
| 1933 | -23.9 C (-11.0 F) |
| 1934 | -23.3 C (-9.9 F) |
| 1935 | -21.7 C (-7.1 F) |
| 1936 | -28.3 C (-18.9 F) |
| 1937 | -20.6 C (-5.1 F) |
| 1938 | -17.8 C (0.0 F) |
| 1939 | -19.4 C (-2.9 F) |
| 1940 | -25.6 C (-14.1 F) |
| 1941 | -16.7 C (1.9 F) |
| 1942 | -23.3 C (-9.9 F) |
| 1943 | -22.2 C (-8.0 F) |
| 1944 | -22.2 C (-8.0 F) |
| 1945 | -21.7 C (-7.1 F) |
| 1946 | -17.8 C (0.0 F) |
| 1947 | -17.2 C (1.0 F) |
| 1948 | -20.6 C (-5.1 F) |
| 1949 | -19.4 C (-2.9 F) |
| 1950 | -20.6 C (-5.1 F) |
| 1951 | -25.0 C (-13.0 F) |
| 1952 | -16.1 C (3.0 F) |
| 1953 | -18.9 C (-2.0 F) |
| 1954 | -18.3 C (-0.9 F) |
| 1955 | -22.8 C (-9.0 F) |
| 1956 | -17.2 C (1.0 F) |
| 1957 | -24.4 C (-11.9 F) |
| 1958 | -22.8 C (-9.0 F) |
| 1959 | -23.3 C (-9.9 F) |
| 1960 | -22.2 C (-8.0 F) |
| 1961 | -20.0 C (-4.0 F) |
| 1962 | -23.9 C (-11.0 F) |
| 1963 | -26.1 C (-15.0 F) |
| 1964 | -18.3 C (-0.9 F) |
| 1965 | -23.3 C (-9.9 F) |
| 1966 | -24.4 C (-11.9 F) |
| 1967 | -21.1 C (-6.0 F) |
| 1968 | -24.4 C (-11.9 F) |
| 1969 | -21.1 C (-6.0 F) |
| 1970 | -25.6 C (-14.1 F) |
| 1971 | -22.2 C (-8.0 F) |
| 1972 | -26.1 C (-15.0 F) |
| 1973 | -23.3 C (-9.9 F) |
| 1974 | -25.0 C (-13.0 F) |
| 1975 | -19.4 C (-2.9 F) |
| 1976 | -23.9 C (-11.0 F) |
| 1977 | -30.6 C (-23.1 F) |
| 1978 | -23.3 C (-9.9 F) |
| 1979 | -26.7 C (-16.1 F) |
| 1980 | -23.9 C (-11.0 F) |
| 1981 | -27.2 C (-17.0 F) |
| 1982 | -30.0 C (-22.0 F) |
| 1983 | -30.0 C (-22.0 F) |
| 1984 | -28.3 C (-18.9 F) |
| 1985 | -30.0 C (-22.0 F) |
| 1986 | -15.0 C (5.0 F) |
| 1987 | -26.7 C (-16.1 F) |
| 1988 | -25.0 C (-13.0 F) |
| 1989 | -29.4 C (-20.9 F) |
| 1990 | -22.2 C (-8.0 F) |
| 1991 | -18.3 C (-0.9 F) |
| 1992 | -20.6 C (-5.1 F) |
| 1993 | -17.8 C (0.0 F) |
| 1994 | -27.8 C (-18.0 F) |
| 1995 | -20.0 C (-4.0 F) |
| 1996 | -27.8 C (-18.0 F) |
| 1997 | -25.6 C (-14.1 F) |
| 1998 | -16.1 C (3.0 F) |
| 1999 | -28.3 C (-18.9 F) |
| 2000 | -20.6 C (-5.1 F) |
| 2001 | -17.8 C (0.0 F) |
| 2002 | -15.0 C (5.0 F) |
| 2003 | -22.2 C (-8.0 F) |
| 2004 | -21.1 C (-6.0 F) |
| 2005 | -18.3 C (-0.9 F) |
| 2006 | -17.2 C (1.0 F) |
| 2007 | -21.1 C (-6.0 F) |
| 2008 | -17.2 C (1.0 F) |
| 2009 | -25.6 C (-14.1 F) |
| 2010 | -20.0 C (-4.0 F) |
| 2011 | -20.6 C (-5.1 F) |
| 2012 | -13.3 C (8.1 F) |
| 2013 | -16.7 C (1.9 F) |
| 2014 | -25.0 C (-13.0 F) |
| 2015 | -21.1 C (-6.0 F) |
| 2016 | -18.9 C (-2.0 F) |
| 2017 | -20.6 C (-5.1 F) |
| 2018 | -25.6 C (-14.1 F) |
| 2019 | -26.7 C (-16.1 F) |
| 2020 | -19.4 C (-2.9 F) |
| 2021 | -21.1 C (-6.0 F) |
| 2022 | -22.8 C (-9.0 F) |
| 2023 | -14.4 C (6.1 F) |
| 2024 | -23.9 C (-11.0 F) |
| 2025 | -23.9 C (-11.0 F) |
| 2026 | -15.6 C (3.9 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1893 | 41.7 mm (1.6 in) |
| 1894 | 50.3 mm (2.0 in) |
| 1895 | 72.4 mm (2.9 in) |
| 1896 | 72.4 mm (2.9 in) |
| 1897 | 43.9 mm (1.7 in) |
| 1898 | 108.7 mm (4.3 in) |
| 1899 | 54.4 mm (2.1 in) |
| 1900 | 62.2 mm (2.4 in) |
| 1901 | 69.1 mm (2.7 in) |
| 1902 | 76.7 mm (3.0 in) |
| 1903 | 68.6 mm (2.7 in) |
| 1904 | 118.4 mm (4.7 in) |
| 1905 | 47.0 mm (1.9 in) |
| 1906 | 59.4 mm (2.3 in) |
| 1907 | 53.3 mm (2.1 in) |
| 1908 | 57.2 mm (2.3 in) |
| 1909 | 53.6 mm (2.1 in) |
| 1910 | 67.8 mm (2.7 in) |
| 1911 | 74.2 mm (2.9 in) |
| 1912 | 42.2 mm (1.7 in) |
| 1913 | 44.7 mm (1.8 in) |
| 1914 | 59.7 mm (2.4 in) |
| 1915 | 111.8 mm (4.4 in) |
| 1916 | 52.3 mm (2.1 in) |
| 1917 | 85.1 mm (3.4 in) |
| 1918 | 43.7 mm (1.7 in) |
| 1919 | 76.2 mm (3.0 in) |
| 1920 | 48.3 mm (1.9 in) |
| 1921 | 52.8 mm (2.1 in) |
| 1922 | 85.1 mm (3.4 in) |
| 1923 | 58.4 mm (2.3 in) |
| 1924 | 61.0 mm (2.4 in) |
| 1925 | 50.8 mm (2.0 in) |
| 1926 | 106.7 mm (4.2 in) |
| 1927 | 88.6 mm (3.5 in) |
| 1928 | 43.9 mm (1.7 in) |
| 1929 | 57.7 mm (2.3 in) |
| 1930 | 39.4 mm (1.6 in) |
| 1931 | 52.1 mm (2.1 in) |
| 1932 | 75.4 mm (3.0 in) |
| 1933 | 58.2 mm (2.3 in) |
| 1934 | 43.7 mm (1.7 in) |
| 1935 | 60.2 mm (2.4 in) |
| 1936 | 94.0 mm (3.7 in) |
| 1937 | 66.8 mm (2.6 in) |
| 1938 | 64.8 mm (2.6 in) |
| 1939 | 80.5 mm (3.2 in) |
| 1940 | 76.7 mm (3.0 in) |
| 1941 | 67.3 mm (2.6 in) |
| 1942 | 66.8 mm (2.6 in) |
| 1943 | 84.6 mm (3.3 in) |
| 1944 | 82.0 mm (3.2 in) |
| 1945 | 55.4 mm (2.2 in) |
| 1946 | 47.2 mm (1.9 in) |
| 1947 | 80.0 mm (3.1 in) |
| 1948 | 45.0 mm (1.8 in) |
| 1949 | 55.6 mm (2.2 in) |
| 1950 | 57.2 mm (2.3 in) |
| 1951 | 86.4 mm (3.4 in) |
| 1952 | 41.1 mm (1.6 in) |
| 1953 | 78.0 mm (3.1 in) |
| 1954 | 58.7 mm (2.3 in) |
| 1955 | 92.2 mm (3.6 in) |
| 1956 | 51.6 mm (2.0 in) |
| 1957 | 60.2 mm (2.4 in) |
| 1958 | 78.7 mm (3.1 in) |
| 1959 | 56.4 mm (2.2 in) |
| 1960 | 65.5 mm (2.6 in) |
| 1961 | 65.8 mm (2.6 in) |
| 1962 | 46.7 mm (1.8 in) |
| 1963 | 59.4 mm (2.3 in) |
| 1964 | 66.8 mm (2.6 in) |
| 1965 | 120.9 mm (4.8 in) |
| 1966 | 62.5 mm (2.5 in) |
| 1967 | 60.2 mm (2.4 in) |
| 1968 | 113.8 mm (4.5 in) |
| 1969 | 104.4 mm (4.1 in) |
| 1970 | 68.1 mm (2.7 in) |
| 1971 | 97.8 mm (3.9 in) |
| 1972 | 64.5 mm (2.5 in) |
| 1973 | 91.7 mm (3.6 in) |
| 1974 | 107.2 mm (4.2 in) |
| 1975 | 76.5 mm (3.0 in) |
| 1976 | 50.0 mm (2.0 in) |
| 1977 | 76.7 mm (3.0 in) |
| 1978 | 119.6 mm (4.7 in) |
| 1979 | 90.9 mm (3.6 in) |
| 1980 | 41.7 mm (1.6 in) |
| 1981 | 68.8 mm (2.7 in) |
| 1982 | 53.8 mm (2.1 in) |
| 1983 | 103.9 mm (4.1 in) |
| 1984 | 37.1 mm (1.5 in) |
| 1985 | 48.3 mm (1.9 in) |
| 1986 | 67.3 mm (2.6 in) |
| 1987 | 33.0 mm (1.3 in) |
| 1988 | 54.9 mm (2.2 in) |
| 1989 | 50.8 mm (2.0 in) |
| 1990 | 69.3 mm (2.7 in) |
| 1991 | 66.8 mm (2.6 in) |
| 1992 | 129.8 mm (5.1 in) |
| 1993 | 47.8 mm (1.9 in) |
| 1994 | 36.3 mm (1.4 in) |
| 1995 | 45.7 mm (1.8 in) |
| 1996 | 74.9 mm (2.9 in) |
| 1997 | 62.7 mm (2.5 in) |
| 1998 | 44.7 mm (1.8 in) |
| 1999 | 85.9 mm (3.4 in) |
| 2000 | 45.5 mm (1.8 in) |
| 2001 | 88.9 mm (3.5 in) |
| 2002 | 96.0 mm (3.8 in) |
| 2003 | 69.1 mm (2.7 in) |
| 2004 | 57.4 mm (2.3 in) |
| 2005 | 62.0 mm (2.4 in) |
| 2006 | 64.5 mm (2.5 in) |
| 2007 | 58.4 mm (2.3 in) |
| 2008 | 148.3 mm (5.8 in) |
| 2009 | 55.1 mm (2.2 in) |
| 2010 | 72.9 mm (2.9 in) |
| 2011 | 52.6 mm (2.1 in) |
| 2012 | 59.4 mm (2.3 in) |
| 2013 | 68.8 mm (2.7 in) |
| 2014 | 86.9 mm (3.4 in) |
| 2015 | 71.4 mm (2.8 in) |
| 2016 | 62.7 mm (2.5 in) |
| 2017 | 90.7 mm (3.6 in) |
| 2018 | 61.2 mm (2.4 in) |
| 2019 | 65.0 mm (2.6 in) |
| 2020 | 54.1 mm (2.1 in) |
| 2021 | 68.8 mm (2.7 in) |
| 2022 | 76.7 mm (3.0 in) |
| 2023 | 49.3 mm (1.9 in) |
| 2024 | 78.7 mm (3.1 in) |
| 2025 | 49.5 mm (1.9 in) |
| 2026 | 63.0 mm (2.5 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1893 | 55.3 mm (2.2 in) |
| 1894 | 56.4 mm (2.2 in) |
| 1895 | 123.3 mm (4.9 in) |
| 1896 | 124.0 mm (4.9 in) |
| 1897 | 65.3 mm (2.6 in) |
| 1898 | 87.6 mm (3.4 in) |
| 1899 | 72.5 mm (2.9 in) |
| 1900 | 96.3 mm (3.8 in) |
| 1901 | 73.1 mm (2.9 in) |
| 1902 | 158.2 mm (6.2 in) |
| 1903 | 83.8 mm (3.3 in) |
| 1904 | 118.4 mm (4.7 in) |
| 1905 | 70.6 mm (2.8 in) |
| 1906 | 109.7 mm (4.3 in) |
| 1907 | 152.9 mm (6.0 in) |
| 1908 | 124.2 mm (4.9 in) |
| 1909 | 80.9 mm (3.2 in) |
| 1910 | 68.8 mm (2.7 in) |
| 1911 | 136.9 mm (5.4 in) |
| 1912 | 77.0 mm (3.0 in) |
| 1913 | 141.3 mm (5.6 in) |
| 1914 | 68.1 mm (2.7 in) |
| 1915 | 121.7 mm (4.8 in) |
| 1916 | 81.9 mm (3.2 in) |
| 1917 | 99.6 mm (3.9 in) |
| 1918 | 96.3 mm (3.8 in) |
| 1919 | 156.5 mm (6.2 in) |
| 1920 | 96.6 mm (3.8 in) |
| 1921 | 102.4 mm (4.0 in) |
| 1922 | 104.1 mm (4.1 in) |
| 1923 | 123.0 mm (4.8 in) |
| 1924 | 103.9 mm (4.1 in) |
| 1925 | 99.6 mm (3.9 in) |
| 1926 | 181.6 mm (7.1 in) |
| 1927 | 182.9 mm (7.2 in) |
| 1928 | 72.9 mm (2.9 in) |
| 1929 | 104.7 mm (4.1 in) |
| 1930 | 63.1 mm (2.5 in) |
| 1931 | 52.1 mm (2.1 in) |
| 1932 | 75.4 mm (3.0 in) |
| 1933 | 96.0 mm (3.8 in) |
| 1934 | 72.2 mm (2.8 in) |
| 1935 | 70.2 mm (2.8 in) |
| 1936 | 102.9 mm (4.1 in) |
| 1937 | 98.6 mm (3.9 in) |
| 1938 | 78.5 mm (3.1 in) |
| 1939 | 98.0 mm (3.9 in) |
| 1940 | 78.5 mm (3.1 in) |
| 1941 | 128.0 mm (5.0 in) |
| 1942 | 113.0 mm (4.4 in) |
| 1943 | 190.7 mm (7.5 in) |
| 1944 | 118.6 mm (4.7 in) |
| 1945 | 77.2 mm (3.0 in) |
| 1946 | 102.2 mm (4.0 in) |
| 1947 | 98.3 mm (3.9 in) |
| 1948 | 92.0 mm (3.6 in) |
| 1949 | 90.4 mm (3.6 in) |
| 1950 | 101.5 mm (4.0 in) |
| 1951 | 208.0 mm (8.2 in) |
| 1952 | 56.9 mm (2.2 in) |
| 1953 | 92.4 mm (3.6 in) |
| 1954 | 82.5 mm (3.2 in) |
| 1955 | 141.7 mm (5.6 in) |
| 1956 | 69.0 mm (2.7 in) |
| 1957 | 125.4 mm (4.9 in) |
| 1958 | 142.4 mm (5.6 in) |
| 1959 | 110.0 mm (4.3 in) |
| 1960 | 86.9 mm (3.4 in) |
| 1961 | 103.6 mm (4.1 in) |
| 1962 | 68.6 mm (2.7 in) |
| 1963 | 61.2 mm (2.4 in) |
| 1964 | 115.6 mm (4.6 in) |
| 1965 | 148.8 mm (5.9 in) |
| 1966 | 103.1 mm (4.1 in) |
| 1967 | 98.1 mm (3.9 in) |
| 1968 | 163.8 mm (6.4 in) |
| 1969 | 122.4 mm (4.8 in) |
| 1970 | 93.5 mm (3.7 in) |
| 1971 | 166.9 mm (6.6 in) |
| 1972 | 87.5 mm (3.4 in) |
| 1973 | 193.6 mm (7.6 in) |
| 1974 | 176.3 mm (6.9 in) |
| 1975 | 131.1 mm (5.2 in) |
| 1976 | 60.2 mm (2.4 in) |
| 1977 | 135.1 mm (5.3 in) |
| 1978 | 127.5 mm (5.0 in) |
| 1979 | 133.8 mm (5.3 in) |
| 1980 | 101.4 mm (4.0 in) |
| 1981 | 118.3 mm (4.7 in) |
| 1982 | 86.2 mm (3.4 in) |
| 1983 | 159.0 mm (6.3 in) |
| 1984 | 71.5 mm (2.8 in) |
| 1985 | 79.0 mm (3.1 in) |
| 1986 | 95.2 mm (3.7 in) |
| 1987 | 71.8 mm (2.8 in) |
| 1988 | 67.9 mm (2.7 in) |
| 1989 | 84.4 mm (3.3 in) |
| 1990 | 136.3 mm (5.4 in) |
| 1991 | 96.3 mm (3.8 in) |
| 1992 | 219.0 mm (8.6 in) |
| 1993 | 90.2 mm (3.6 in) |
| 1994 | 60.2 mm (2.4 in) |
| 1995 | 92.2 mm (3.6 in) |
| 1996 | 124.2 mm (4.9 in) |
| 1997 | 65.0 mm (2.6 in) |
| 1998 | 59.7 mm (2.4 in) |
| 1999 | 89.2 mm (3.5 in) |
| 2000 | 57.9 mm (2.3 in) |
| 2001 | 130.8 mm (5.1 in) |
| 2002 | 155.5 mm (6.1 in) |
| 2003 | 139.7 mm (5.5 in) |
| 2004 | 139.2 mm (5.5 in) |
| 2005 | 92.9 mm (3.7 in) |
| 2006 | 86.6 mm (3.4 in) |
| 2007 | 87.7 mm (3.5 in) |
| 2008 | 193.3 mm (7.6 in) |
| 2009 | 112.5 mm (4.4 in) |
| 2010 | 115.5 mm (4.5 in) |
| 2011 | 116.3 mm (4.6 in) |
| 2012 | 76.5 mm (3.0 in) |
| 2013 | 111.5 mm (4.4 in) |
| 2014 | 119.4 mm (4.7 in) |
| 2015 | 148.4 mm (5.8 in) |
| 2016 | 66.3 mm (2.6 in) |
| 2017 | 146.6 mm (5.8 in) |
| 2018 | 96.6 mm (3.8 in) |
| 2019 | 106.5 mm (4.2 in) |
| 2020 | 99.1 mm (3.9 in) |
| 2021 | 140.1 mm (5.5 in) |
| 2022 | 139.2 mm (5.5 in) |
| 2023 | 72.9 mm (2.9 in) |
| 2024 | 100.6 mm (4.0 in) |
| 2025 | 61.7 mm (2.4 in) |
| 2026 | 92.0 mm (3.6 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1893 | 12 days |
| 1894 | 24 days |
| 1895 | 27 days |
| 1896 | 16 days |
| 1897 | 24 days |
| 1898 | 20 days |
| 1899 | 12 days |
| 1900 | 17 days |
| 1901 | 18 days |
| 1902 | 19 days |
| 1903 | 23 days |
| 1904 | 32 days |
| 1905 | 19 days |
| 1906 | 20 days |
| 1907 | 17 days |
| 1908 | 24 days |
| 1909 | 18 days |
| 1910 | 21 days |
| 1911 | 19 days |
| 1912 | 17 days |
| 1913 | 18 days |
| 1914 | 26 days |
| 1915 | 22 days |
| 1916 | 33 days |
| 1917 | 18 days |
| 1918 | 18 days |
| 1919 | 27 days |
| 1920 | 29 days |
| 1921 | 17 days |
| 1922 | 22 days |
| 1923 | 13 days |
| 1924 | 22 days |
| 1925 | 22 days |
| 1926 | 12 days |
| 1927 | 18 days |
| 1928 | 18 days |
| 1929 | 13 days |
| 1930 | 26 days |
| 1931 | 19 days |
| 1932 | 16 days |
| 1933 | 19 days |
| 1934 | 20 days |
| 1935 | 17 days |
| 1936 | 32 days |
| 1937 | 13 days |
| 1938 | 16 days |
| 1939 | 24 days |
| 1940 | 30 days |
| 1941 | 17 days |
| 1942 | 16 days |
| 1943 | 29 days |
| 1944 | 26 days |
| 1945 | 24 days |
| 1946 | 18 days |
| 1947 | 26 days |
| 1948 | 27 days |
| 1949 | 20 days |
| 1950 | 18 days |
| 1951 | 14 days |
| 1952 | 24 days |
| 1953 | 23 days |
| 1954 | 19 days |
| 1955 | 30 days |
| 1956 | 40 days |
| 1957 | 23 days |
| 1958 | 22 days |
| 1959 | 22 days |
| 1960 | 18 days |
| 1961 | 13 days |
| 1962 | 21 days |
| 1963 | 36 days |
| 1964 | 23 days |
| 1965 | 14 days |
| 1966 | 19 days |
| 1967 | 17 days |
| 1968 | 16 days |
| 1969 | 17 days |
| 1970 | 15 days |
| 1971 | 25 days |
| 1972 | 15 days |
| 1973 | 15 days |
| 1974 | 17 days |
| 1975 | 15 days |
| 1976 | 25 days |
| 1977 | 16 days |
| 1978 | 20 days |
| 1979 | 33 days |
| 1980 | 23 days |
| 1981 | 24 days |
| 1982 | 16 days |
| 1983 | 27 days |
| 1984 | 15 days |
| 1985 | 22 days |
| 1986 | 15 days |
| 1987 | 39 days |
| 1988 | 38 days |
| 1989 | 28 days |
| 1990 | 17 days |
| 1991 | 15 days |
| 1992 | 27 days |
| 1993 | 12 days |
| 1994 | 20 days |
| 1995 | 25 days |
| 1996 | 26 days |
| 1997 | 15 days |
| 1998 | 26 days |
| 1999 | 33 days |
| 2000 | 19 days |
| 2001 | 16 days |
| 2002 | 27 days |
| 2003 | 21 days |
| 2004 | 25 days |
| 2005 | 21 days |
| 2006 | 18 days |
| 2007 | 19 days |
| 2008 | 22 days |
| 2009 | 15 days |
| 2010 | 23 days |
| 2011 | 36 days |
| 2012 | 27 days |
| 2013 | 30 days |
| 2014 | 16 days |
| 2015 | 27 days |
| 2016 | 20 days |
| 2017 | 17 days |
| 2018 | 15 days |
| 2019 | 15 days |
| 2020 | 21 days |
| 2021 | 12 days |
| 2022 | 15 days |
| 2023 | 21 days |
| 2024 | 22 days |
| 2025 | 20 days |
| 2026 | 19 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
123 years with a frostAcross 123 years with a frost, the median last spring frost at Decatur Wtp falls on 21 April and the median first autumn frost on 17 October, which leaves a median of 178 days between them.
In 1990 to 2025 the median growing season was 190 days. That is 19 days more than in 1894 to 1924.
Fitted over all years, the growing season changes by +1.7 days per decade at this station.
| Measure | Median, all years | Earliest period (1894 to 1924) | Recent period (1990 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 21 April | 24 April | 13 April | 11 days earlier | -1.1 days per decade |
| First autumn frost | 17 October | 14 October | 19 October | 5 days later | +0.6 days per decade |
| Growing days | 178 days | 171 days | 190 days | 19 days more | +1.7 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
128 years, 1894 to 2025A day with at least 64.3 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 141.5 mm (5.6 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 64.3 mm (2.5 in) | |
| 5 years | 83.0 mm (3.3 in) | |
| 10 years | 96.2 mm (3.8 in) | |
| 25 years | 113.7 mm (4.5 in) | |
| 50 years | 127.4 mm (5.0 in) | |
| 100 years | 141.5 mm (5.6 in) |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 128 years of values from 1894 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: 148.3 mm (5.8 in) in 2008; 129.8 mm (5.1 in) in 1992; 120.9 mm (4.8 in) in 1965.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Decatur Wtp, at 1912. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1912 ran 0.3 C (0.6 F) higher than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1912 | +0.3 | +0.6 | 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
2011 to 2025 against 1961 to 1990Over 2011 to 2025, Decatur Wtp had a mean temperature of 12.0 C (53.6 F) and 993.8 mm (39.1 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Edwardsport Pwr Plt (United States, 187 km away), Dayton Mcd (United States, 407 km away) and Vincennes 4 E (United States, 181 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Edwardsport Pwr Plt | United States | 187 km (116 mi) | 11.8 C (53.2 F) | 1,015.8 mm (40.0 in) | 0.59 |
| Dayton Mcd | United States | 407 km (253 mi) | 11.9 C (53.3 F) | 987.9 mm (38.9 in) | 0.59 |
| Vincennes 4 E | United States | 181 km (112 mi) | 12.1 C (53.8 F) | 1,059.1 mm (41.7 in) | 0.62 |
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
Download the Data
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-15 (15 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-12).