Storm Lake Weather Records (USC00137979)
Record envelope, standing records and threshold days for Storm Lake (USC00137979), Iowa, United States, with 134 years of record.
Key Facts for Storm Lake
- Storm Lake (USC00137979) is a weather station in Iowa, United States at 42.65 latitude and -95.19 longitude, 439 m (1,439 ft) above sea level.
- The station reports from 1893 to 2026, 134 years of record.
- 1,464 records set at Storm Lake still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Storm Lake tied a daily record high minimum temperature of 23.9 C (75.0 F) on 11 August 2026.
About the Station
- Location: Iowa, United States, 42.65 latitude, -95.19 longitude.
- Elevation: 439 m (1,439 ft).
- Period of record: 1893 to 2026, 134 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
9 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 18.9 C (66.0 F) | -35.0 C (-31.0 F) | 12.2 C (54.0 F) | -27.2 C (-17.0 F) |
| Feb | 22.8 C (73.0 F) | -36.7 C (-34.1 F) | 17.8 C (64.0 F) | -18.9 C (-2.0 F) |
| Mar | 31.7 C (89.1 F) | -31.1 C (-24.0 F) | 31.7 C (89.1 F) | -16.1 C (3.0 F) |
| Apr | 33.9 C (93.0 F) | -16.7 C (1.9 F) | 30.0 C (86.0 F) | -5.6 C (21.9 F) |
| May | 41.7 C (107.1 F) | -6.7 C (19.9 F) | 32.2 C (90.0 F) | 0.6 C (33.1 F) |
| Jun | 40.6 C (105.1 F) | 1.1 C (34.0 F) | 33.3 C (91.9 F) | 10.0 C (50.0 F) |
| Jul | 42.8 C (109.0 F) | 5.6 C (42.1 F) | 35.6 C (96.1 F) | 13.3 C (55.9 F) |
| Aug | 42.8 C (109.0 F) | 2.2 C (36.0 F) | 33.9 C (93.0 F) | 13.3 C (55.9 F) |
| Sep | 38.3 C (100.9 F) | -5.6 C (21.9 F) | 21.7 C (71.1 F) | 11.7 C (53.1 F) |
| Oct | 32.8 C (91.0 F) | -16.7 C (1.9 F) | n/a | n/a |
| Nov | 25.6 C (78.1 F) | -23.9 C (-11.0 F) | n/a | n/a |
| Dec | 18.9 C (66.0 F) | -33.9 C (-29.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1893 | 9 |
| 1898 | 4 |
| 1899 | 26 |
| 1900 | 15 |
| 1901 | 16 |
| 1902 | 12 |
| 1903 | 6 |
| 1904 | 12 |
| 1905 | 22 |
| 1906 | 4 |
| 1907 | 11 |
| 1908 | 7 |
| 1909 | 16 |
| 1910 | 18 |
| 1911 | 15 |
| 1912 | 11 |
| 1913 | 13 |
| 1914 | 13 |
| 1915 | 18 |
| 1916 | 10 |
| 1917 | 18 |
| 1918 | 15 |
| 1919 | 7 |
| 1920 | 7 |
| 1921 | 10 |
| 1922 | 6 |
| 1923 | 13 |
| 1924 | 17 |
| 1925 | 20 |
| 1926 | 3 |
| 1927 | 12 |
| 1928 | 17 |
| 1929 | 6 |
| 1930 | 24 |
| 1931 | 18 |
| 1932 | 7 |
| 1933 | 15 |
| 1934 | 30 |
| 1935 | 12 |
| 1936 | 51 |
| 1937 | 21 |
| 1938 | 6 |
| 1939 | 22 |
| 1940 | 11 |
| 1941 | 10 |
| 1942 | 10 |
| 1943 | 2 |
| 1944 | 11 |
| 1945 | 11 |
| 1946 | 11 |
| 1947 | 14 |
| 1948 | 7 |
| 1949 | 9 |
| 1950 | 15 |
| 1951 | 9 |
| 1952 | 3 |
| 1953 | 5 |
| 1954 | 11 |
| 1955 | 16 |
| 1956 | 11 |
| 1957 | 5 |
| 1958 | 11 |
| 1959 | 18 |
| 1960 | 7 |
| 1961 | 5 |
| 1962 | 17 |
| 1963 | 16 |
| 1964 | 18 |
| 1965 | 10 |
| 1966 | 15 |
| 1967 | 15 |
| 1968 | 9 |
| 1969 | 11 |
| 1970 | 14 |
| 1971 | 6 |
| 1972 | 14 |
| 1973 | 8 |
| 1974 | 13 |
| 1975 | 15 |
| 1976 | 13 |
| 1977 | 9 |
| 1978 | 3 |
| 1979 | 6 |
| 1980 | 8 |
| 1981 | 8 |
| 1982 | 4 |
| 1983 | 13 |
| 1984 | 9 |
| 1985 | 14 |
| 1986 | 10 |
| 1987 | 14 |
| 1988 | 9 |
| 1989 | 14 |
| 1990 | 3 |
| 1991 | 23 |
| 1992 | 10 |
| 1993 | 7 |
| 1994 | 10 |
| 1995 | 9 |
| 1996 | 6 |
| 1997 | 11 |
| 1998 | 9 |
| 1999 | 4 |
| 2000 | 13 |
| 2001 | 5 |
| 2002 | 7 |
| 2003 | 8 |
| 2004 | 6 |
| 2005 | 8 |
| 2006 | 8 |
| 2007 | 8 |
| 2008 | 7 |
| 2009 | 2 |
| 2010 | 4 |
| 2011 | 7 |
| 2012 | 25 |
| 2013 | 6 |
| 2014 | 10 |
| 2015 | 1 |
| 2016 | 5 |
| 2017 | 7 |
| 2018 | 11 |
| 2019 | 6 |
| 2020 | 12 |
| 2021 | 14 |
| 2022 | 9 |
| 2023 | 9 |
| 2024 | 7 |
| 2025 | 12 |
| 2026 | 13 |
All-Time Record Progression
17 new records| Date | Kind | Detail |
|---|---|---|
| 1930-08-03 | Record high maximum temperature | Record high maximum temperature 42.8 C (109.0 F) |
| 1930-08-03 | Record high minimum temperature | Record high minimum temperature 26.7 C (80.1 F) |
| 1933-03-19 | Record daily snowfall | Record daily snowfall 25.4 cm (10.0 in) |
| 1936-02-08 | Record snow depth | Record snow depth 53.3 cm (21.0 in) |
| 1936-02-09 | Record snow depth | Record snow depth 55.9 cm (22.0 in) |
| 1936-02-12 | Record snow depth | Record snow depth 58.4 cm (23.0 in) |
| 1936-02-15 | Record snow depth | Record snow depth 63.5 cm (25.0 in) |
| 1936-02-16 | Record snow depth | Record snow depth 66.0 cm (26.0 in) |
| 1936-02-26 | Record snow depth | Record snow depth 68.6 cm (27.0 in) |
| 1936-02-27 | Record snow depth | Record snow depth 71.1 cm (28.0 in) |
| 1936-08-18 | Record high minimum temperature | Record high minimum temperature 27.2 C (81.0 F) |
| 1954-05-31 | Record daily precipitation | Record daily precipitation 111.8 mm (4.4 in) |
| 1962-08-31 | Record daily precipitation | Record daily precipitation 168.9 mm (6.6 in) |
| 1975-01-10 | Record daily snowfall | Record daily snowfall 33.0 cm (13.0 in) |
| 1979-02-08 | Record snow depth | Record snow depth 78.7 cm (31.0 in) |
| 1979-02-18 | Record snow depth | Record snow depth 83.8 cm (33.0 in) |
| 1982-01-02 | Record snow depth | Record snow depth 88.9 cm (35.0 in) |
Wettest Day of Each Month
Aug: 168.9 mm (6.6 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 25.9 mm (1.0 in) | 25 January 1982 |
| Feb | 56.4 mm (2.2 in) | 20 February 1954 |
| Mar | 63.5 mm (2.5 in) | 28 March 2004 |
| Apr | 60.5 mm (2.4 in) | 21 April 1999 |
| May | 142.2 mm (5.6 in) | 27 May 2013 |
| Jun | 144.3 mm (5.7 in) | 25 June 2005 |
| Jul | 158.8 mm (6.3 in) | 22 July 2010 |
| Aug | 168.9 mm (6.6 in) | 31 August 1962 |
| Sep | 159.0 mm (6.3 in) | 13 September 1978 |
| Oct | 95.3 mm (3.8 in) | 13 October 2023 |
| Nov | 76.2 mm (3.0 in) | 30 November 2000 |
| Dec | 36.8 mm (1.4 in) | 30 December 1931 |
Period of Record Coverage
1893 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1893 | 361 | 99% | Yes |
| 1897 | 1 | 0% | No |
| 1898 | 79 | 22% | No |
| 1899 | 354 | 97% | Yes |
| 1900 | 363 | 99% | Yes |
| 1901 | 363 | 99% | Yes |
| 1902 | 365 | 100% | Yes |
| 1903 | 359 | 98% | Yes |
| 1904 | 363 | 99% | Yes |
| 1905 | 359 | 98% | Yes |
| 1906 | 200 | 55% | No |
| 1907 | 322 | 88% | No |
| 1908 | 364 | 99% | Yes |
| 1909 | 349 | 96% | Yes |
| 1910 | 331 | 91% | Yes |
| 1911 | 352 | 96% | Yes |
| 1912 | 345 | 94% | Yes |
| 1913 | 363 | 99% | Yes |
| 1914 | 365 | 100% | Yes |
| 1915 | 364 | 100% | Yes |
| 1916 | 365 | 100% | Yes |
| 1917 | 353 | 97% | Yes |
| 1918 | 362 | 99% | Yes |
| 1919 | 359 | 98% | Yes |
| 1920 | 365 | 100% | Yes |
| 1921 | 365 | 100% | Yes |
| 1922 | 364 | 100% | Yes |
| 1923 | 362 | 99% | Yes |
| 1924 | 362 | 99% | Yes |
| 1925 | 362 | 99% | Yes |
| 1926 | 363 | 99% | Yes |
| 1927 | 364 | 100% | Yes |
| 1928 | 364 | 99% | Yes |
| 1929 | 364 | 100% | Yes |
| 1930 | 364 | 100% | Yes |
| 1931 | 365 | 100% | Yes |
| 1932 | 366 | 100% | Yes |
| 1933 | 362 | 99% | Yes |
| 1934 | 197 | 54% | No |
| 1935 | 306 | 84% | No |
| 1936 | 366 | 100% | Yes |
| 1937 | 365 | 100% | Yes |
| 1938 | 365 | 100% | Yes |
| 1939 | 365 | 100% | Yes |
| 1940 | 366 | 100% | Yes |
| 1941 | 364 | 100% | Yes |
| 1942 | 365 | 100% | Yes |
| 1943 | 364 | 100% | Yes |
| 1944 | 364 | 99% | Yes |
| 1945 | 362 | 99% | Yes |
| 1946 | 364 | 100% | Yes |
| 1947 | 362 | 99% | Yes |
| 1948 | 349 | 95% | Yes |
| 1949 | 364 | 100% | Yes |
| 1950 | 364 | 100% | Yes |
| 1951 | 363 | 99% | Yes |
| 1952 | 328 | 90% | No |
| 1953 | 365 | 100% | Yes |
| 1954 | 364 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 364 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 364 | 100% | Yes |
| 1962 | 364 | 100% | Yes |
| 1963 | 363 | 99% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 363 | 99% | Yes |
| 1967 | 364 | 100% | Yes |
| 1968 | 335 | 92% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 364 | 100% | Yes |
| 1980 | 365 | 100% | Yes |
| 1981 | 363 | 99% | Yes |
| 1982 | 365 | 100% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 365 | 100% | Yes |
| 1985 | 364 | 100% | Yes |
| 1986 | 365 | 100% | Yes |
| 1987 | 365 | 100% | Yes |
| 1988 | 365 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 364 | 100% | Yes |
| 1992 | 364 | 99% | Yes |
| 1993 | 364 | 100% | Yes |
| 1994 | 360 | 99% | Yes |
| 1995 | 354 | 97% | Yes |
| 1996 | 334 | 91% | Yes |
| 1997 | 321 | 88% | No |
| 1998 | 299 | 82% | No |
| 1999 | 305 | 84% | No |
| 2000 | 277 | 76% | No |
| 2001 | 318 | 87% | No |
| 2002 | 285 | 78% | No |
| 2003 | 308 | 84% | No |
| 2004 | 357 | 98% | Yes |
| 2005 | 350 | 96% | Yes |
| 2006 | 315 | 86% | No |
| 2007 | 361 | 99% | Yes |
| 2008 | 361 | 99% | Yes |
| 2009 | 357 | 98% | Yes |
| 2010 | 360 | 99% | Yes |
| 2011 | 361 | 99% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 275 | 75% | No |
| 2014 | 365 | 100% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 359 | 98% | Yes |
| 2020 | 366 | 100% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 365 | 100% | Yes |
| 2026 | 246 | 67% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 11 August 2026 | Storm Lake, US | daily high min (Tie) | 23.9 C (75.0 F) | tie | 91 years | 9 of 100 (Routine) |
| 5 August 2026 | Storm Lake, US | daily low max | 19.4 C (66.9 F) | 0.6 C (1.1 F) | 56 years | 27 of 100 (Routine) |
| 27 July 2026 | Storm Lake, US | daily high min | 25.6 C (78.1 F) | 1.2 C (2.2 F) | 109 years | 43 of 100 (Notable) |
| 16 May 2026 | Storm Lake, US | daily high max (Tie) | 32.2 C (90.0 F) | tie | 89 years | 9 of 100 (Routine) |
| 17 April 2026 | Storm Lake, US | daily high min | 15.0 C (59.0 F) | 1.7 C (3.1 F) | 112 years | 43 of 100 (Notable) |
| 31 March 2026 | Storm Lake, US | daily high max | 28.9 C (84.0 F) | 1.1 C (2.0 F) | 57 years | 28 of 100 (Routine) |
| 22 March 2026 | Storm Lake, US | monthly high max | 31.7 C (89.1 F) | 2.3 C (4.1 F) | 58 years | 40 of 100 (Notable) |
| 21 March 2026 | Storm Lake, US | daily high max | 27.2 C (81.0 F) | 1.6 C (2.9 F) | 97 years | 41 of 100 (Notable) |
| 17 March 2026 | Storm Lake, US | daily low max | -8.9 C (16.0 F) | 0.6 C (1.1 F) | 124 years | 40 of 100 (Notable) |
| 9 March 2026 | Storm Lake, US | daily high max | 19.4 C (66.9 F) | 1.1 C (2.0 F) | 5 years | 12 of 100 (Routine) |
| 9 March 2026 | Storm Lake, US | daily high min (Tie) | 3.9 C (39.0 F) | tie | 57 years | 6 of 100 (Routine) |
| 28 February 2026 | Storm Lake, US | daily high max | 17.8 C (64.0 F) | 0.6 C (1.1 F) | 10 years | 13 of 100 (Routine) |
| 17 February 2026 | Storm Lake, US | daily high max | 17.2 C (63.0 F) | 0.5 C (0.9 F) | 44 years | 23 of 100 (Routine) |
| 17 February 2026 | Storm Lake, US | daily high min | 1.1 C (34.0 F) | 0.5 C (0.9 F) | 44 years | 23 of 100 (Routine) |
| 16 February 2026 | Storm Lake, US | daily high max | 17.2 C (63.0 F) | 3.9 C (7.0 F) | 104 years | 45 of 100 (Notable) |
| 10 February 2026 | Storm Lake, US | daily high max | 17.8 C (64.0 F) | 1.1 C (2.0 F) | 48 years | 25 of 100 (Routine) |
| 27 December 2025 | Storm Lake, US | daily high min (Tie) | 1.7 C (35.1 F) | tie | 22 years | 4 of 100 (Routine) |
| 7 December 2025 | Storm Lake, US | daily snowfall | 13.5 cm (5.3 in) | 2.1 cm (0.8 in) | 99 years | 43 of 100 (Notable) |
| 5 December 2025 | Storm Lake, US | daily low min | -20.6 C (-5.1 F) | 0.6 C (1.1 F) | 34 years | 20 of 100 (Routine) |
| 30 November 2025 | Storm Lake, US | daily snowfall | 24.9 cm (9.8 in) | 16.0 cm (6.3 in) | 36 years | 55 of 100 (Notable) |
Climate Trend
114 complete years, 1893 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1893 | 7.3 C | -0.82 C |
| 1899 | 7.5 C | -0.65 C |
| 1900 | 8.6 C | +0.48 C |
| 1901 | 8.6 C | +0.43 C |
| 1902 | 7.4 C | -0.69 C |
| 1903 | 7.3 C | -0.83 C |
| 1904 | 6.3 C | -1.79 C |
| 1905 | 6.7 C | -1.44 C |
| 1908 | 8.9 C | +0.73 C |
| 1909 | 7.8 C | -0.30 C |
| 1911 | 8.9 C | +0.81 C |
| 1912 | 7.3 C | -0.87 C |
| 1913 | 9.5 C | +1.34 C |
| 1914 | 9.1 C | +0.95 C |
| 1915 | 8.1 C | -0.02 C |
| 1916 | 7.8 C | -0.33 C |
| 1917 | 6.4 C | -1.72 C |
| 1918 | 9.1 C | +0.99 C |
| 1919 | 8.6 C | +0.44 C |
| 1920 | 8.4 C | +0.31 C |
| 1921 | 10.7 C | +2.53 C |
| 1922 | 9.3 C | +1.19 C |
| 1923 | 8.9 C | +0.82 C |
| 1924 | 7.4 C | -0.76 C |
| 1925 | 9.0 C | +0.83 C |
| 1926 | 8.8 C | +0.63 C |
| 1927 | 8.6 C | +0.44 C |
| 1928 | 9.3 C | +1.17 C |
| 1929 | 7.4 C | -0.73 C |
| 1930 | 9.2 C | +1.04 C |
| 1931 | 10.9 C | +2.74 C |
| 1932 | 7.7 C | -0.38 C |
| 1933 | 9.5 C | +1.41 C |
| 1936 | 8.1 C | -0.06 C |
| 1937 | 7.6 C | -0.50 C |
| 1938 | 9.4 C | +1.30 C |
| 1939 | 9.6 C | +1.49 C |
| 1940 | 7.7 C | -0.38 C |
| 1941 | 9.6 C | +1.43 C |
| 1942 | 8.6 C | +0.48 C |
| 1943 | 8.0 C | -0.17 C |
| 1944 | 8.9 C | +0.78 C |
| 1945 | 8.2 C | +0.03 C |
| 1946 | 9.4 C | +1.24 C |
| 1947 | 8.2 C | +0.08 C |
| 1948 | 8.5 C | +0.35 C |
| 1949 | 8.6 C | +0.52 C |
| 1950 | 6.8 C | -1.37 C |
| 1951 | 6.3 C | -1.86 C |
| 1953 | 9.2 C | +1.09 C |
| 1954 | 9.3 C | +1.13 C |
| 1955 | 8.5 C | +0.42 C |
| 1956 | 8.8 C | +0.69 C |
| 1957 | 8.3 C | +0.20 C |
| 1958 | 7.4 C | -0.71 C |
| 1959 | 6.9 C | -1.26 C |
| 1960 | 6.8 C | -1.32 C |
| 1961 | 7.0 C | -1.11 C |
| 1962 | 6.9 C | -1.23 C |
| 1963 | 7.5 C | -0.59 C |
| 1964 | 7.4 C | -0.72 C |
| 1965 | 6.8 C | -1.37 C |
| 1966 | 6.5 C | -1.66 C |
| 1967 | 6.8 C | -1.30 C |
| 1969 | 6.5 C | -1.66 C |
| 1970 | 6.9 C | -1.18 C |
| 1971 | 7.2 C | -0.89 C |
| 1972 | 6.2 C | -1.92 C |
| 1973 | 8.2 C | +0.10 C |
| 1974 | 7.7 C | -0.43 C |
| 1975 | 7.5 C | -0.67 C |
| 1976 | 8.0 C | -0.16 C |
| 1977 | 8.2 C | +0.11 C |
| 1978 | 6.3 C | -1.78 C |
| 1979 | 5.9 C | -2.21 C |
| 1980 | 7.8 C | -0.29 C |
| 1981 | 8.6 C | +0.48 C |
| 1982 | 6.5 C | -1.64 C |
| 1983 | 7.1 C | -1.04 C |
| 1984 | 7.3 C | -0.81 C |
| 1985 | 6.5 C | -1.64 C |
| 1986 | 8.0 C | -0.17 C |
| 1987 | 10.0 C | +1.88 C |
| 1988 | 8.4 C | +0.30 C |
| 1989 | 7.1 C | -0.98 C |
| 1990 | 8.7 C | +0.54 C |
| 1991 | 8.0 C | -0.13 C |
| 1992 | 8.0 C | -0.11 C |
| 1993 | 6.5 C | -1.63 C |
| 1994 | 7.2 C | -0.90 C |
| 1995 | 6.7 C | -1.40 C |
| 1996 | 6.0 C | -2.16 C |
| 2001 | 9.4 C | +1.25 C |
| 2004 | 8.6 C | +0.49 C |
| 2005 | 9.5 C | +1.40 C |
| 2006 | 10.3 C | +2.21 C |
| 2007 | 9.1 C | +0.96 C |
| 2008 | 7.4 C | -0.70 C |
| 2009 | 8.2 C | +0.09 C |
| 2010 | 8.3 C | +0.19 C |
| 2011 | 7.7 C | -0.41 C |
| 2012 | 10.3 C | +2.15 C |
| 2014 | 7.2 C | -0.96 C |
| 2015 | 9.2 C | +1.09 C |
| 2016 | 9.9 C | +1.77 C |
| 2017 | 9.6 C | +1.45 C |
| 2018 | 7.9 C | -0.20 C |
| 2019 | 7.5 C | -0.67 C |
| 2020 | 9.1 C | +0.95 C |
| 2021 | 9.6 C | +1.48 C |
| 2022 | 8.0 C | -0.15 C |
| 2023 | 9.4 C | +1.26 C |
| 2024 | 10.3 C | +2.13 C |
| 2025 | 9.4 C | +1.28 C |
The fitted trend in annual mean temperature here over 1893 to 2025 is 0.01 C (-0.04 to 0.07) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.02 F (-0.08 to 0.13) per decade. The slope is a straight line fitted to 114 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 (-0.04 to 0.07) per decade | 0.02 F (-0.08 to 0.13) per decade | 1893 to 2025 | 114 | Not clearly different from zero |
| Mean daily maximum | 0.01 C (-0.05 to 0.07) per decade | 0.01 F (-0.09 to 0.12) per decade | 1893 to 2025 | 114 | Not clearly different from zero |
| Mean daily minimum | 0.02 C (-0.05 to 0.08) per decade | 0.03 F (-0.09 to 0.15) per decade | 1893 to 2025 | 114 | Not clearly different from zero |
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1893 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 42.8 C (109.0 F) | 1930 | 35.6 C (96.1 F) | 131 |
| Coldest night (TNn) | -36.7 C (-34.1 F) | 1905 | -28.3 C (-18.9 F) | 130 |
| Wettest day (Rx1day) | 168.9 mm (6.6 in) | 1962 | 57.2 mm (2.3 in) | 130 |
| Wettest five days (Rx5day) | 228.2 mm (9.0 in) | 1979 | 76.2 mm (3.0 in) | 130 |
| Longest dry spell (CDD) | 55 days | 2026 | 26 days | 130 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1893 | 35.0 C (95.0 F) |
| 1897 | -7.8 C (18.0 F) |
| 1898 | 18.9 C (66.0 F) |
| 1899 | 34.4 C (93.9 F) |
| 1900 | 33.3 C (91.9 F) |
| 1901 | 40.0 C (104.0 F) |
| 1902 | 32.2 C (90.0 F) |
| 1903 | 31.7 C (89.1 F) |
| 1904 | 32.2 C (90.0 F) |
| 1905 | 35.0 C (95.0 F) |
| 1906 | 30.6 C (87.1 F) |
| 1907 | 35.0 C (95.0 F) |
| 1908 | 33.3 C (91.9 F) |
| 1909 | 33.9 C (93.0 F) |
| 1910 | 35.6 C (96.1 F) |
| 1911 | 37.8 C (100.0 F) |
| 1912 | 35.6 C (96.1 F) |
| 1913 | 38.3 C (100.9 F) |
| 1914 | 36.1 C (97.0 F) |
| 1915 | 31.1 C (88.0 F) |
| 1916 | 36.1 C (97.0 F) |
| 1917 | 36.7 C (98.1 F) |
| 1918 | 36.7 C (98.1 F) |
| 1919 | 35.6 C (96.1 F) |
| 1920 | 33.9 C (93.0 F) |
| 1921 | 35.6 C (96.1 F) |
| 1922 | 35.6 C (96.1 F) |
| 1923 | 34.4 C (93.9 F) |
| 1924 | 33.3 C (91.9 F) |
| 1925 | 37.2 C (99.0 F) |
| 1926 | 37.8 C (100.0 F) |
| 1927 | 35.0 C (95.0 F) |
| 1928 | 35.0 C (95.0 F) |
| 1929 | 35.0 C (95.0 F) |
| 1930 | 42.8 C (109.0 F) |
| 1931 | 36.7 C (98.1 F) |
| 1932 | 35.0 C (95.0 F) |
| 1933 | 40.6 C (105.1 F) |
| 1934 | 41.7 C (107.1 F) |
| 1935 | 40.0 C (104.0 F) |
| 1936 | 42.8 C (109.0 F) |
| 1937 | 39.4 C (102.9 F) |
| 1938 | 36.1 C (97.0 F) |
| 1939 | 37.8 C (100.0 F) |
| 1940 | 38.9 C (102.0 F) |
| 1941 | 39.4 C (102.9 F) |
| 1942 | 34.4 C (93.9 F) |
| 1943 | 35.0 C (95.0 F) |
| 1944 | 33.9 C (93.0 F) |
| 1945 | 35.0 C (95.0 F) |
| 1946 | 35.6 C (96.1 F) |
| 1947 | 37.8 C (100.0 F) |
| 1948 | 35.6 C (96.1 F) |
| 1949 | 33.9 C (93.0 F) |
| 1950 | 32.8 C (91.0 F) |
| 1951 | 32.2 C (90.0 F) |
| 1952 | 33.9 C (93.0 F) |
| 1953 | 36.1 C (97.0 F) |
| 1954 | 36.7 C (98.1 F) |
| 1955 | 39.4 C (102.9 F) |
| 1956 | 36.7 C (98.1 F) |
| 1957 | 35.6 C (96.1 F) |
| 1958 | 34.4 C (93.9 F) |
| 1959 | 35.0 C (95.0 F) |
| 1960 | 34.4 C (93.9 F) |
| 1961 | 35.6 C (96.1 F) |
| 1962 | 33.9 C (93.0 F) |
| 1963 | 36.7 C (98.1 F) |
| 1964 | 35.0 C (95.0 F) |
| 1965 | 36.1 C (97.0 F) |
| 1966 | 38.3 C (100.9 F) |
| 1967 | 36.1 C (97.0 F) |
| 1968 | 34.4 C (93.9 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 | 32.8 C (91.0 F) |
| 1974 | 37.8 C (100.0 F) |
| 1975 | 35.0 C (95.0 F) |
| 1976 | 37.8 C (100.0 F) |
| 1977 | 36.1 C (97.0 F) |
| 1978 | 36.1 C (97.0 F) |
| 1979 | 36.7 C (98.1 F) |
| 1980 | 37.8 C (100.0 F) |
| 1981 | 34.4 C (93.9 F) |
| 1982 | 35.6 C (96.1 F) |
| 1983 | 36.1 C (97.0 F) |
| 1984 | 36.7 C (98.1 F) |
| 1985 | 36.7 C (98.1 F) |
| 1986 | 33.3 C (91.9 F) |
| 1987 | 37.8 C (100.0 F) |
| 1988 | 38.3 C (100.9 F) |
| 1989 | 36.1 C (97.0 F) |
| 1990 | 36.7 C (98.1 F) |
| 1991 | 34.4 C (93.9 F) |
| 1992 | 32.8 C (91.0 F) |
| 1993 | 31.7 C (89.1 F) |
| 1994 | 32.8 C (91.0 F) |
| 1995 | 37.8 C (100.0 F) |
| 1996 | 32.2 C (90.0 F) |
| 1997 | 33.3 C (91.9 F) |
| 1998 | 35.0 C (95.0 F) |
| 1999 | 35.0 C (95.0 F) |
| 2000 | 36.7 C (98.1 F) |
| 2001 | 35.0 C (95.0 F) |
| 2002 | 36.1 C (97.0 F) |
| 2003 | 33.9 C (93.0 F) |
| 2004 | 32.2 C (90.0 F) |
| 2005 | 35.0 C (95.0 F) |
| 2006 | 37.2 C (99.0 F) |
| 2007 | 35.0 C (95.0 F) |
| 2008 | 37.2 C (99.0 F) |
| 2009 | 32.8 C (91.0 F) |
| 2010 | 33.9 C (93.0 F) |
| 2011 | 36.7 C (98.1 F) |
| 2012 | 36.1 C (97.0 F) |
| 2013 | 34.4 C (93.9 F) |
| 2014 | 32.2 C (90.0 F) |
| 2015 | 35.0 C (95.0 F) |
| 2016 | 35.0 C (95.0 F) |
| 2017 | 35.6 C (96.1 F) |
| 2018 | 37.2 C (99.0 F) |
| 2019 | 34.4 C (93.9 F) |
| 2020 | 34.4 C (93.9 F) |
| 2021 | 36.7 C (98.1 F) |
| 2022 | 34.4 C (93.9 F) |
| 2023 | 35.6 C (96.1 F) |
| 2024 | 34.4 C (93.9 F) |
| 2025 | 35.0 C (95.0 F) |
| 2026 | 35.6 C (96.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1893 | -29.4 C (-20.9 F) |
| 1897 | n/a |
| 1898 | -28.3 C (-18.9 F) |
| 1899 | -34.4 C (-29.9 F) |
| 1900 | -26.1 C (-15.0 F) |
| 1901 | -32.8 C (-27.0 F) |
| 1902 | -28.9 C (-20.0 F) |
| 1903 | -28.9 C (-20.0 F) |
| 1904 | -34.4 C (-29.9 F) |
| 1905 | -36.7 C (-34.1 F) |
| 1906 | -28.3 C (-18.9 F) |
| 1907 | -32.8 C (-27.0 F) |
| 1908 | -25.6 C (-14.1 F) |
| 1909 | -29.4 C (-20.9 F) |
| 1910 | -28.3 C (-18.9 F) |
| 1911 | -32.2 C (-26.0 F) |
| 1912 | -34.4 C (-29.9 F) |
| 1913 | -27.2 C (-17.0 F) |
| 1914 | -28.3 C (-18.9 F) |
| 1915 | -30.6 C (-23.1 F) |
| 1916 | -32.2 C (-26.0 F) |
| 1917 | -35.0 C (-31.0 F) |
| 1918 | -33.3 C (-27.9 F) |
| 1919 | -30.6 C (-23.1 F) |
| 1920 | -26.1 C (-15.0 F) |
| 1921 | -24.4 C (-11.9 F) |
| 1922 | -26.1 C (-15.0 F) |
| 1923 | -26.1 C (-15.0 F) |
| 1924 | -35.0 C (-31.0 F) |
| 1925 | -26.7 C (-16.1 F) |
| 1926 | -26.1 C (-15.0 F) |
| 1927 | -27.2 C (-17.0 F) |
| 1928 | -25.6 C (-14.1 F) |
| 1929 | -28.3 C (-18.9 F) |
| 1930 | -30.0 C (-22.0 F) |
| 1931 | -23.3 C (-9.9 F) |
| 1932 | -28.9 C (-20.0 F) |
| 1933 | -31.7 C (-25.1 F) |
| 1934 | -26.1 C (-15.0 F) |
| 1935 | -25.6 C (-14.1 F) |
| 1936 | -34.4 C (-29.9 F) |
| 1937 | -29.4 C (-20.9 F) |
| 1938 | -25.6 C (-14.1 F) |
| 1939 | -27.8 C (-18.0 F) |
| 1940 | -32.2 C (-26.0 F) |
| 1941 | -23.3 C (-9.9 F) |
| 1942 | -30.6 C (-23.1 F) |
| 1943 | -29.4 C (-20.9 F) |
| 1944 | -32.8 C (-27.0 F) |
| 1945 | -23.9 C (-11.0 F) |
| 1946 | -26.7 C (-16.1 F) |
| 1947 | -25.6 C (-14.1 F) |
| 1948 | -29.4 C (-20.9 F) |
| 1949 | -27.8 C (-18.0 F) |
| 1950 | -28.9 C (-20.0 F) |
| 1951 | -28.3 C (-18.9 F) |
| 1952 | -28.3 C (-18.9 F) |
| 1953 | -27.8 C (-18.0 F) |
| 1954 | -28.9 C (-20.0 F) |
| 1955 | -27.8 C (-18.0 F) |
| 1956 | -30.0 C (-22.0 F) |
| 1957 | -28.9 C (-20.0 F) |
| 1958 | -28.9 C (-20.0 F) |
| 1959 | -29.4 C (-20.9 F) |
| 1960 | -28.9 C (-20.0 F) |
| 1961 | -28.3 C (-18.9 F) |
| 1962 | -31.1 C (-24.0 F) |
| 1963 | -30.6 C (-23.1 F) |
| 1964 | -26.1 C (-15.0 F) |
| 1965 | -26.7 C (-16.1 F) |
| 1966 | -33.3 C (-27.9 F) |
| 1967 | -31.7 C (-25.1 F) |
| 1968 | -28.3 C (-18.9 F) |
| 1969 | -28.9 C (-20.0 F) |
| 1970 | -32.8 C (-27.0 F) |
| 1971 | -27.8 C (-18.0 F) |
| 1972 | -32.2 C (-26.0 F) |
| 1973 | -28.9 C (-20.0 F) |
| 1974 | -30.6 C (-23.1 F) |
| 1975 | -28.3 C (-18.9 F) |
| 1976 | -28.3 C (-18.9 F) |
| 1977 | -30.0 C (-22.0 F) |
| 1978 | -27.8 C (-18.0 F) |
| 1979 | -31.1 C (-24.0 F) |
| 1980 | -24.4 C (-11.9 F) |
| 1981 | -28.9 C (-20.0 F) |
| 1982 | -32.2 C (-26.0 F) |
| 1983 | -31.7 C (-25.1 F) |
| 1984 | -27.8 C (-18.0 F) |
| 1985 | -31.1 C (-24.0 F) |
| 1986 | -27.2 C (-17.0 F) |
| 1987 | -26.7 C (-16.1 F) |
| 1988 | -28.9 C (-20.0 F) |
| 1989 | -31.7 C (-25.1 F) |
| 1990 | -27.8 C (-18.0 F) |
| 1991 | -25.6 C (-14.1 F) |
| 1992 | -22.8 C (-9.0 F) |
| 1993 | -26.1 C (-15.0 F) |
| 1994 | -28.9 C (-20.0 F) |
| 1995 | -25.0 C (-13.0 F) |
| 1996 | -32.8 C (-27.0 F) |
| 1997 | -26.7 C (-16.1 F) |
| 1998 | -23.3 C (-9.9 F) |
| 1999 | -28.3 C (-18.9 F) |
| 2000 | -25.0 C (-13.0 F) |
| 2001 | -26.1 C (-15.0 F) |
| 2002 | -20.0 C (-4.0 F) |
| 2003 | -24.4 C (-11.9 F) |
| 2004 | -26.1 C (-15.0 F) |
| 2005 | -23.9 C (-11.0 F) |
| 2006 | -23.9 C (-11.0 F) |
| 2007 | -26.7 C (-16.1 F) |
| 2008 | -27.8 C (-18.0 F) |
| 2009 | -30.0 C (-22.0 F) |
| 2010 | -25.0 C (-13.0 F) |
| 2011 | -28.9 C (-20.0 F) |
| 2012 | -22.8 C (-9.0 F) |
| 2013 | -23.3 C (-9.9 F) |
| 2014 | -27.8 C (-18.0 F) |
| 2015 | -23.3 C (-9.9 F) |
| 2016 | -28.3 C (-18.9 F) |
| 2017 | -22.8 C (-9.0 F) |
| 2018 | -30.0 C (-22.0 F) |
| 2019 | -31.1 C (-24.0 F) |
| 2020 | -25.6 C (-14.1 F) |
| 2021 | -29.4 C (-20.9 F) |
| 2022 | -28.3 C (-18.9 F) |
| 2023 | -22.2 C (-8.0 F) |
| 2024 | -29.4 C (-20.9 F) |
| 2025 | -26.7 C (-16.1 F) |
| 2026 | -27.2 C (-17.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1893 | 52.1 mm (2.1 in) |
| 1897 | n/a |
| 1898 | 16.0 mm (0.6 in) |
| 1899 | 105.4 mm (4.1 in) |
| 1900 | 95.0 mm (3.7 in) |
| 1901 | 76.2 mm (3.0 in) |
| 1902 | 78.0 mm (3.1 in) |
| 1903 | 67.6 mm (2.7 in) |
| 1904 | 47.0 mm (1.9 in) |
| 1905 | 53.3 mm (2.1 in) |
| 1906 | 26.2 mm (1.0 in) |
| 1907 | 39.1 mm (1.5 in) |
| 1908 | 80.0 mm (3.1 in) |
| 1909 | 43.4 mm (1.7 in) |
| 1910 | 21.3 mm (0.8 in) |
| 1911 | 48.3 mm (1.9 in) |
| 1912 | 61.7 mm (2.4 in) |
| 1913 | 47.8 mm (1.9 in) |
| 1914 | 89.9 mm (3.5 in) |
| 1915 | 58.9 mm (2.3 in) |
| 1916 | 43.4 mm (1.7 in) |
| 1917 | 54.6 mm (2.1 in) |
| 1918 | 45.0 mm (1.8 in) |
| 1919 | 66.0 mm (2.6 in) |
| 1920 | 55.9 mm (2.2 in) |
| 1921 | 29.0 mm (1.1 in) |
| 1922 | 35.8 mm (1.4 in) |
| 1923 | 50.5 mm (2.0 in) |
| 1924 | 60.5 mm (2.4 in) |
| 1925 | 20.1 mm (0.8 in) |
| 1926 | 55.4 mm (2.2 in) |
| 1927 | 27.7 mm (1.1 in) |
| 1928 | 47.5 mm (1.9 in) |
| 1929 | 23.6 mm (0.9 in) |
| 1930 | 51.3 mm (2.0 in) |
| 1931 | 72.9 mm (2.9 in) |
| 1932 | 58.4 mm (2.3 in) |
| 1933 | 47.0 mm (1.9 in) |
| 1934 | 65.5 mm (2.6 in) |
| 1935 | 34.0 mm (1.3 in) |
| 1936 | 43.4 mm (1.7 in) |
| 1937 | 45.7 mm (1.8 in) |
| 1938 | 53.3 mm (2.1 in) |
| 1939 | 64.0 mm (2.5 in) |
| 1940 | 68.6 mm (2.7 in) |
| 1941 | 80.3 mm (3.2 in) |
| 1942 | 45.7 mm (1.8 in) |
| 1943 | 55.9 mm (2.2 in) |
| 1944 | 40.9 mm (1.6 in) |
| 1945 | 57.2 mm (2.3 in) |
| 1946 | 54.4 mm (2.1 in) |
| 1947 | 27.2 mm (1.1 in) |
| 1948 | 86.4 mm (3.4 in) |
| 1949 | 47.5 mm (1.9 in) |
| 1950 | 37.8 mm (1.5 in) |
| 1951 | 58.4 mm (2.3 in) |
| 1952 | 47.2 mm (1.9 in) |
| 1953 | 53.8 mm (2.1 in) |
| 1954 | 111.8 mm (4.4 in) |
| 1955 | 42.7 mm (1.7 in) |
| 1956 | 48.3 mm (1.9 in) |
| 1957 | 32.5 mm (1.3 in) |
| 1958 | 63.0 mm (2.5 in) |
| 1959 | 57.2 mm (2.3 in) |
| 1960 | 59.2 mm (2.3 in) |
| 1961 | 53.3 mm (2.1 in) |
| 1962 | 168.9 mm (6.6 in) |
| 1963 | 74.2 mm (2.9 in) |
| 1964 | 48.0 mm (1.9 in) |
| 1965 | 65.3 mm (2.6 in) |
| 1966 | 45.0 mm (1.8 in) |
| 1967 | 57.2 mm (2.3 in) |
| 1968 | 43.2 mm (1.7 in) |
| 1969 | 69.9 mm (2.8 in) |
| 1970 | 45.7 mm (1.8 in) |
| 1971 | 86.9 mm (3.4 in) |
| 1972 | 53.3 mm (2.1 in) |
| 1973 | 74.9 mm (2.9 in) |
| 1974 | 62.0 mm (2.4 in) |
| 1975 | 57.9 mm (2.3 in) |
| 1976 | 31.0 mm (1.2 in) |
| 1977 | 68.8 mm (2.7 in) |
| 1978 | 159.0 mm (6.3 in) |
| 1979 | 127.0 mm (5.0 in) |
| 1980 | 39.4 mm (1.6 in) |
| 1981 | 80.0 mm (3.1 in) |
| 1982 | 85.1 mm (3.4 in) |
| 1983 | 63.5 mm (2.5 in) |
| 1984 | 47.8 mm (1.9 in) |
| 1985 | 44.7 mm (1.8 in) |
| 1986 | 53.3 mm (2.1 in) |
| 1987 | 93.7 mm (3.7 in) |
| 1988 | 105.4 mm (4.1 in) |
| 1989 | 55.1 mm (2.2 in) |
| 1990 | 66.0 mm (2.6 in) |
| 1991 | 134.6 mm (5.3 in) |
| 1992 | 91.4 mm (3.6 in) |
| 1993 | 57.2 mm (2.3 in) |
| 1994 | 57.2 mm (2.3 in) |
| 1995 | 114.3 mm (4.5 in) |
| 1996 | 155.2 mm (6.1 in) |
| 1997 | 63.5 mm (2.5 in) |
| 1998 | 57.7 mm (2.3 in) |
| 1999 | 74.2 mm (2.9 in) |
| 2000 | 76.2 mm (3.0 in) |
| 2001 | 57.2 mm (2.3 in) |
| 2002 | 99.6 mm (3.9 in) |
| 2003 | 50.8 mm (2.0 in) |
| 2004 | 64.0 mm (2.5 in) |
| 2005 | 144.3 mm (5.7 in) |
| 2006 | 64.8 mm (2.6 in) |
| 2007 | 94.0 mm (3.7 in) |
| 2008 | 67.1 mm (2.6 in) |
| 2009 | 138.4 mm (5.4 in) |
| 2010 | 158.8 mm (6.3 in) |
| 2011 | 91.4 mm (3.6 in) |
| 2012 | 37.3 mm (1.5 in) |
| 2013 | 142.2 mm (5.6 in) |
| 2014 | 120.1 mm (4.7 in) |
| 2015 | 59.9 mm (2.4 in) |
| 2016 | 109.5 mm (4.3 in) |
| 2017 | 35.1 mm (1.4 in) |
| 2018 | 63.2 mm (2.5 in) |
| 2019 | 47.0 mm (1.9 in) |
| 2020 | 52.3 mm (2.1 in) |
| 2021 | 42.7 mm (1.7 in) |
| 2022 | 31.2 mm (1.2 in) |
| 2023 | 95.3 mm (3.8 in) |
| 2024 | 43.2 mm (1.7 in) |
| 2025 | 56.9 mm (2.2 in) |
| 2026 | 63.5 mm (2.5 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1893 | 85.6 mm (3.4 in) |
| 1897 | n/a |
| 1898 | 23.4 mm (0.9 in) |
| 1899 | 133.1 mm (5.2 in) |
| 1900 | 80.8 mm (3.2 in) |
| 1901 | 76.2 mm (3.0 in) |
| 1902 | 148.9 mm (5.9 in) |
| 1903 | 79.8 mm (3.1 in) |
| 1904 | 62.0 mm (2.4 in) |
| 1905 | 71.5 mm (2.8 in) |
| 1906 | 31.0 mm (1.2 in) |
| 1907 | 54.2 mm (2.1 in) |
| 1908 | 55.6 mm (2.2 in) |
| 1909 | 69.6 mm (2.7 in) |
| 1910 | 8.1 mm (0.32 in) |
| 1911 | 49.8 mm (2.0 in) |
| 1912 | 73.1 mm (2.9 in) |
| 1913 | 71.4 mm (2.8 in) |
| 1914 | 89.9 mm (3.5 in) |
| 1915 | 85.3 mm (3.4 in) |
| 1916 | 32.3 mm (1.3 in) |
| 1917 | 38.2 mm (1.5 in) |
| 1918 | 53.3 mm (2.1 in) |
| 1919 | 109.7 mm (4.3 in) |
| 1920 | 59.2 mm (2.3 in) |
| 1921 | 67.3 mm (2.6 in) |
| 1922 | 66.2 mm (2.6 in) |
| 1923 | 65.0 mm (2.6 in) |
| 1924 | 60.5 mm (2.4 in) |
| 1925 | 26.2 mm (1.0 in) |
| 1926 | 57.7 mm (2.3 in) |
| 1927 | 50.2 mm (2.0 in) |
| 1928 | 39.9 mm (1.6 in) |
| 1929 | 25.5 mm (1.0 in) |
| 1930 | 111.0 mm (4.4 in) |
| 1931 | 142.3 mm (5.6 in) |
| 1932 | 68.1 mm (2.7 in) |
| 1933 | 51.3 mm (2.0 in) |
| 1934 | 104.6 mm (4.1 in) |
| 1935 | 45.6 mm (1.8 in) |
| 1936 | 28.2 mm (1.1 in) |
| 1937 | 63.5 mm (2.5 in) |
| 1938 | 74.9 mm (2.9 in) |
| 1939 | 71.9 mm (2.8 in) |
| 1940 | 53.8 mm (2.1 in) |
| 1941 | 105.4 mm (4.1 in) |
| 1942 | 45.7 mm (1.8 in) |
| 1943 | 55.9 mm (2.2 in) |
| 1944 | 120.9 mm (4.8 in) |
| 1945 | 47.8 mm (1.9 in) |
| 1946 | 66.8 mm (2.6 in) |
| 1947 | 23.4 mm (0.9 in) |
| 1948 | 88.2 mm (3.5 in) |
| 1949 | 95.0 mm (3.7 in) |
| 1950 | 66.4 mm (2.6 in) |
| 1951 | 102.6 mm (4.0 in) |
| 1952 | 57.7 mm (2.3 in) |
| 1953 | 101.3 mm (4.0 in) |
| 1954 | 144.3 mm (5.7 in) |
| 1955 | 54.6 mm (2.1 in) |
| 1956 | 63.5 mm (2.5 in) |
| 1957 | 54.9 mm (2.2 in) |
| 1958 | 104.5 mm (4.1 in) |
| 1959 | 108.6 mm (4.3 in) |
| 1960 | 77.9 mm (3.1 in) |
| 1961 | 58.9 mm (2.3 in) |
| 1962 | 201.9 mm (7.9 in) |
| 1963 | 121.7 mm (4.8 in) |
| 1964 | 58.9 mm (2.3 in) |
| 1965 | 194.9 mm (7.7 in) |
| 1966 | 49.8 mm (2.0 in) |
| 1967 | 120.5 mm (4.7 in) |
| 1968 | 67.1 mm (2.6 in) |
| 1969 | 131.1 mm (5.2 in) |
| 1970 | 103.1 mm (4.1 in) |
| 1971 | 111.5 mm (4.4 in) |
| 1972 | 83.4 mm (3.3 in) |
| 1973 | 95.1 mm (3.7 in) |
| 1974 | 64.8 mm (2.6 in) |
| 1975 | 75.2 mm (3.0 in) |
| 1976 | 62.0 mm (2.4 in) |
| 1977 | 75.4 mm (3.0 in) |
| 1978 | 181.1 mm (7.1 in) |
| 1979 | 228.2 mm (9.0 in) |
| 1980 | 80.8 mm (3.2 in) |
| 1981 | 87.4 mm (3.4 in) |
| 1982 | 166.9 mm (6.6 in) |
| 1983 | 108.5 mm (4.3 in) |
| 1984 | 90.2 mm (3.6 in) |
| 1985 | 73.2 mm (2.9 in) |
| 1986 | 117.9 mm (4.6 in) |
| 1987 | 125.0 mm (4.9 in) |
| 1988 | 156.7 mm (6.2 in) |
| 1989 | 109.2 mm (4.3 in) |
| 1990 | 199.6 mm (7.9 in) |
| 1991 | 143.0 mm (5.6 in) |
| 1992 | 154.3 mm (6.1 in) |
| 1993 | 109.3 mm (4.3 in) |
| 1994 | 73.7 mm (2.9 in) |
| 1995 | 156.7 mm (6.2 in) |
| 1996 | 191.5 mm (7.5 in) |
| 1997 | 97.5 mm (3.8 in) |
| 1998 | 74.9 mm (2.9 in) |
| 1999 | 97.3 mm (3.8 in) |
| 2000 | 76.2 mm (3.0 in) |
| 2001 | 73.4 mm (2.9 in) |
| 2002 | 109.0 mm (4.3 in) |
| 2003 | 130.6 mm (5.1 in) |
| 2004 | 87.8 mm (3.5 in) |
| 2005 | 171.2 mm (6.7 in) |
| 2006 | 75.5 mm (3.0 in) |
| 2007 | 129.5 mm (5.1 in) |
| 2008 | 115.8 mm (4.6 in) |
| 2009 | 156.2 mm (6.1 in) |
| 2010 | 165.2 mm (6.5 in) |
| 2011 | 47.1 mm (1.9 in) |
| 2012 | 50.6 mm (2.0 in) |
| 2013 | 190.7 mm (7.5 in) |
| 2014 | 195.1 mm (7.7 in) |
| 2015 | 84.3 mm (3.3 in) |
| 2016 | 111.8 mm (4.4 in) |
| 2017 | 74.2 mm (2.9 in) |
| 2018 | 91.6 mm (3.6 in) |
| 2019 | 73.7 mm (2.9 in) |
| 2020 | 52.6 mm (2.1 in) |
| 2021 | 83.1 mm (3.3 in) |
| 2022 | 41.9 mm (1.6 in) |
| 2023 | 127.8 mm (5.0 in) |
| 2024 | 63.2 mm (2.5 in) |
| 2025 | 71.1 mm (2.8 in) |
| 2026 | 65.5 mm (2.6 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1893 | 24 days |
| 1897 | n/a |
| 1898 | 14 days |
| 1899 | 16 days |
| 1900 | 19 days |
| 1901 | 24 days |
| 1902 | 18 days |
| 1903 | 27 days |
| 1904 | 23 days |
| 1905 | 19 days |
| 1906 | 22 days |
| 1907 | 25 days |
| 1908 | 29 days |
| 1909 | 23 days |
| 1910 | 38 days |
| 1911 | 38 days |
| 1912 | 16 days |
| 1913 | 26 days |
| 1914 | 36 days |
| 1915 | 30 days |
| 1916 | 26 days |
| 1917 | 18 days |
| 1918 | 21 days |
| 1919 | 30 days |
| 1920 | 18 days |
| 1921 | 26 days |
| 1922 | 17 days |
| 1923 | 46 days |
| 1924 | 22 days |
| 1925 | 24 days |
| 1926 | 22 days |
| 1927 | 18 days |
| 1928 | 19 days |
| 1929 | 19 days |
| 1930 | 30 days |
| 1931 | 40 days |
| 1932 | 22 days |
| 1933 | 24 days |
| 1934 | 41 days |
| 1935 | 13 days |
| 1936 | 23 days |
| 1937 | 30 days |
| 1938 | 21 days |
| 1939 | 24 days |
| 1940 | 24 days |
| 1941 | 20 days |
| 1942 | 38 days |
| 1943 | 18 days |
| 1944 | 20 days |
| 1945 | 29 days |
| 1946 | 21 days |
| 1947 | 31 days |
| 1948 | 22 days |
| 1949 | 38 days |
| 1950 | 25 days |
| 1951 | 34 days |
| 1952 | 53 days |
| 1953 | 27 days |
| 1954 | 34 days |
| 1955 | 27 days |
| 1956 | 38 days |
| 1957 | 42 days |
| 1958 | 53 days |
| 1959 | 23 days |
| 1960 | 33 days |
| 1961 | 32 days |
| 1962 | 51 days |
| 1963 | 29 days |
| 1964 | 28 days |
| 1965 | 21 days |
| 1966 | 53 days |
| 1967 | 45 days |
| 1968 | 29 days |
| 1969 | 18 days |
| 1970 | 43 days |
| 1971 | 31 days |
| 1972 | 31 days |
| 1973 | 20 days |
| 1974 | 22 days |
| 1975 | 25 days |
| 1976 | 39 days |
| 1977 | 25 days |
| 1978 | 19 days |
| 1979 | 30 days |
| 1980 | 22 days |
| 1981 | 31 days |
| 1982 | 16 days |
| 1983 | 15 days |
| 1984 | 29 days |
| 1985 | 26 days |
| 1986 | 31 days |
| 1987 | 37 days |
| 1988 | 46 days |
| 1989 | 27 days |
| 1990 | 20 days |
| 1991 | 23 days |
| 1992 | 22 days |
| 1993 | 22 days |
| 1994 | 27 days |
| 1995 | 15 days |
| 1996 | 21 days |
| 1997 | 20 days |
| 1998 | 42 days |
| 1999 | 23 days |
| 2000 | 23 days |
| 2001 | 37 days |
| 2002 | 36 days |
| 2003 | 19 days |
| 2004 | 21 days |
| 2005 | 25 days |
| 2006 | 19 days |
| 2007 | 33 days |
| 2008 | 18 days |
| 2009 | 34 days |
| 2010 | 27 days |
| 2011 | 1 day |
| 2012 | 34 days |
| 2013 | 26 days |
| 2014 | 22 days |
| 2015 | 26 days |
| 2016 | 22 days |
| 2017 | 33 days |
| 2018 | 23 days |
| 2019 | 18 days |
| 2020 | 28 days |
| 2021 | 28 days |
| 2022 | 26 days |
| 2023 | 27 days |
| 2024 | 36 days |
| 2025 | 27 days |
| 2026 | 55 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
114 years with a frostAcross 114 years with a frost, the median last spring frost at Storm Lake falls on 2 May and the median first autumn frost on 8 October, which leaves a median of 159 days between them.
In 1989 to 2025 the median growing season was 171 days. That is 19 days more than in 1893 to 1930.
Fitted over all years, the growing season changes by +1.7 days per decade at this station.
| Measure | Median, all years | Earliest period (1893 to 1930) | Recent period (1989 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 2 May | 1 May | 24 April | 7 days earlier | -1.0 days per decade |
| First autumn frost | 8 October | 5 October | 12 October | 7 days later | +0.8 days per decade |
| Growing days | 159 days | 152 days | 171 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
61 years, 1949 to 2025A day with at least 62.7 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 227.7 mm (9.0 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 62.7 mm (2.5 in) | |
| 5 years | 90.9 mm (3.6 in) | |
| 10 years | 114.7 mm (4.5 in) | |
| 25 years | 152.2 mm (6.0 in) | |
| 50 years | 186.7 mm (7.4 in) | |
| 100 years | 227.7 mm (9.0 in) | Longer than the 61 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, 61 years of values from 1949 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: 168.9 mm (6.6 in) in 1962; 159.0 mm (6.3 in) in 1978; 158.8 mm (6.3 in) in 2010.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Storm Lake, at 2001. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 2001 ran 0.5 C (0.9 F) higher than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 2001 | +0.5 | +0.9 | 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.
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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-12).