Oskaloosa Weather Records (USC00136327)
Record envelope, standing records and threshold days for Oskaloosa (USC00136327), Iowa, United States, with 133 years of record.
Key Facts for Oskaloosa
- Oskaloosa (USC00136327) is a weather station in Iowa, United States at 41.32 latitude and -92.65 longitude, 253 m (830 ft) above sea level.
- The station reports from 1893 to 2025, 133 years of record.
- 1,464 records set at Oskaloosa still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Oskaloosa set a daily record precipitation of 26.7 mm (1.1 in) on 2 April 2025.
About the Station
- Location: Iowa, United States, 41.32 latitude, -92.65 longitude.
- Elevation: 253 m (830 ft).
- Period of record: 1893 to 2025, 133 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 20.6 C (69.1 F) | -35.0 C (-31.0 F) | 14.4 C (57.9 F) | -25.6 C (-14.1 F) |
| Feb | 25.6 C (78.1 F) | -35.0 C (-31.0 F) | 15.0 C (59.0 F) | -23.9 C (-11.0 F) |
| Mar | 31.1 C (88.0 F) | -34.4 C (-29.9 F) | 27.8 C (82.0 F) | -10.6 C (12.9 F) |
| Apr | 33.3 C (91.9 F) | -14.4 C (6.1 F) | 26.7 C (80.1 F) | -5.0 C (23.0 F) |
| May | 41.1 C (106.0 F) | -4.4 C (24.1 F) | 30.6 C (87.1 F) | 3.9 C (39.0 F) |
| Jun | 40.0 C (104.0 F) | 2.2 C (36.0 F) | 30.6 C (87.1 F) | 11.7 C (53.1 F) |
| Jul | 44.4 C (111.9 F) | 6.7 C (44.1 F) | n/a | n/a |
| Aug | 44.4 C (111.9 F) | 2.2 C (36.0 F) | n/a | n/a |
| Sep | 38.3 C (100.9 F) | -6.7 C (19.9 F) | n/a | n/a |
| Oct | 35.6 C (96.1 F) | -16.1 C (3.0 F) | n/a | n/a |
| Nov | 27.8 C (82.0 F) | -21.7 C (-7.1 F) | n/a | n/a |
| Dec | 23.9 C (75.0 F) | -34.4 C (-29.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1893 | 16 |
| 1894 | 12 |
| 1895 | 25 |
| 1896 | 15 |
| 1897 | 24 |
| 1898 | 10 |
| 1899 | 19 |
| 1900 | 4 |
| 1901 | 14 |
| 1902 | 16 |
| 1903 | 8 |
| 1904 | 8 |
| 1905 | 11 |
| 1906 | 10 |
| 1907 | 13 |
| 1908 | 10 |
| 1909 | 20 |
| 1910 | 14 |
| 1911 | 26 |
| 1912 | 14 |
| 1913 | 16 |
| 1914 | 13 |
| 1915 | 18 |
| 1916 | 10 |
| 1917 | 17 |
| 1918 | 20 |
| 1919 | 7 |
| 1920 | 8 |
| 1921 | 12 |
| 1922 | 2 |
| 1923 | 10 |
| 1924 | 15 |
| 1925 | 17 |
| 1926 | 10 |
| 1927 | 9 |
| 1928 | 7 |
| 1929 | 13 |
| 1930 | 30 |
| 1931 | 16 |
| 1932 | 8 |
| 1933 | 11 |
| 1934 | 41 |
| 1935 | 9 |
| 1936 | 45 |
| 1937 | 15 |
| 1938 | 17 |
| 1939 | 20 |
| 1940 | 11 |
| 1941 | 12 |
| 1942 | 16 |
| 1943 | 8 |
| 1944 | 9 |
| 1945 | 8 |
| 1946 | 12 |
| 1947 | 16 |
| 1948 | 10 |
| 1949 | 7 |
| 1950 | 17 |
| 1951 | 10 |
| 1952 | 11 |
| 1953 | 15 |
| 1954 | 13 |
| 1955 | 11 |
| 1956 | 10 |
| 1957 | 5 |
| 1958 | 7 |
| 1959 | 9 |
| 1960 | 10 |
| 1961 | 7 |
| 1962 | 17 |
| 1963 | 11 |
| 1964 | 9 |
| 1965 | 7 |
| 1966 | 14 |
| 1967 | 6 |
| 1968 | 7 |
| 1969 | 3 |
| 1970 | 11 |
| 1971 | 6 |
| 1972 | 6 |
| 1973 | 10 |
| 1974 | 8 |
| 1975 | 9 |
| 1976 | 12 |
| 1977 | 8 |
| 1978 | 7 |
| 1979 | 6 |
| 1980 | 6 |
| 1981 | 13 |
| 1982 | 6 |
| 1983 | 17 |
| 1984 | 10 |
| 1985 | 10 |
| 1986 | 10 |
| 1987 | 6 |
| 1988 | 12 |
| 1989 | 16 |
| 1990 | 14 |
| 1991 | 19 |
| 1992 | 10 |
| 1993 | 7 |
| 1994 | 4 |
| 1995 | 4 |
| 1996 | 11 |
| 1997 | 5 |
| 1998 | 13 |
| 1999 | 6 |
| 2000 | 14 |
| 2001 | 5 |
| 2002 | 6 |
| 2003 | 5 |
| 2004 | 6 |
| 2005 | 2 |
| 2006 | 7 |
| 2007 | 9 |
| 2008 | 3 |
| 2009 | 7 |
| 2010 | 2 |
| 2011 | 5 |
| 2012 | 21 |
| 2013 | 8 |
| 2014 | 7 |
| 2015 | 9 |
| 2016 | 3 |
| 2017 | 9 |
| 2018 | 7 |
| 2019 | 8 |
| 2020 | 6 |
| 2021 | 7 |
| 2022 | 6 |
| 2023 | 1 |
| 2024 | 5 |
| 2025 | 1 |
All-Time Record Progression
17 new records| Date | Kind | Detail |
|---|---|---|
| 1923-09-28 | Record daily precipitation | Record daily precipitation 92.7 mm (3.6 in) |
| 1925-06-03 | Record daily precipitation | Record daily precipitation 113.8 mm (4.5 in) |
| 1930-01-20 | Record snow depth | Record snow depth 38.1 cm (15.0 in) |
| 1930-01-26 | Record snow depth | Record snow depth 40.6 cm (16.0 in) |
| 1931-03-28 | Record daily snowfall | Record daily snowfall 30.5 cm (12.0 in) |
| 1932-06-26 | Record daily precipitation | Record daily precipitation 138.4 mm (5.4 in) |
| 1934-08-08 | Record high maximum temperature | Record high maximum temperature 44.4 C (111.9 F) |
| 1934-11-30 | Record snow depth | Record snow depth 45.7 cm (18.0 in) |
| 1936-01-22 | Record snow depth | Record snow depth 48.3 cm (19.0 in) |
| 1936-02-03 | Record snow depth | Record snow depth 50.8 cm (20.0 in) |
| 1936-02-04 | Record snow depth | Record snow depth 61.0 cm (24.0 in) |
| 1936-02-05 | Record snow depth | Record snow depth 66.0 cm (26.0 in) |
| 1936-02-08 | Record snow depth | Record snow depth 76.2 cm (30.0 in) |
| 1961-09-13 | Record daily precipitation | Record daily precipitation 141.0 mm (5.6 in) |
| 1996-02-02 | Record low maximum temperature | Record low maximum temperature -25.6 C (-14.1 F) |
| 2000-06-24 | Record daily precipitation | Record daily precipitation 165.4 mm (6.5 in) |
| 2018-11-27 | Record daily snowfall | Record daily snowfall 40.6 cm (16.0 in) |
Wettest Day of Each Month
Jun: 165.4 mm (6.5 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 76.2 mm (3.0 in) | 17 January 2008 |
| Feb | 57.4 mm (2.3 in) | 25 February 2007 |
| Mar | 60.2 mm (2.4 in) | 16 March 1919 |
| Apr | 97.0 mm (3.8 in) | 18 April 2013 |
| May | 87.1 mm (3.4 in) | 26 May 1903 |
| Jun | 165.4 mm (6.5 in) | 24 June 2000 |
| Jul | 110.5 mm (4.4 in) | 8 July 1994 |
| Aug | 136.1 mm (5.4 in) | 5 August 1970 |
| Sep | 141.0 mm (5.6 in) | 13 September 1961 |
| Oct | 95.0 mm (3.7 in) | 14 October 2014 |
| Nov | 118.1 mm (4.6 in) | 17 November 1952 |
| Dec | 52.8 mm (2.1 in) | 14 December 2015 |
Period of Record Coverage
1893 to 2025| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1893 | 362 | 99% | Yes |
| 1894 | 298 | 82% | No |
| 1895 | 360 | 99% | Yes |
| 1896 | 364 | 99% | Yes |
| 1897 | 364 | 100% | Yes |
| 1898 | 365 | 100% | Yes |
| 1899 | 363 | 99% | Yes |
| 1900 | 360 | 99% | Yes |
| 1901 | 361 | 99% | Yes |
| 1902 | 355 | 97% | Yes |
| 1903 | 359 | 98% | Yes |
| 1904 | 360 | 98% | Yes |
| 1905 | 363 | 99% | Yes |
| 1906 | 362 | 99% | Yes |
| 1907 | 349 | 96% | Yes |
| 1908 | 365 | 100% | Yes |
| 1909 | 363 | 99% | Yes |
| 1910 | 364 | 100% | Yes |
| 1911 | 364 | 100% | Yes |
| 1912 | 364 | 99% | Yes |
| 1913 | 364 | 100% | Yes |
| 1914 | 365 | 100% | Yes |
| 1915 | 333 | 91% | Yes |
| 1916 | 366 | 100% | Yes |
| 1917 | 363 | 99% | Yes |
| 1918 | 365 | 100% | Yes |
| 1919 | 365 | 100% | Yes |
| 1920 | 366 | 100% | Yes |
| 1921 | 365 | 100% | Yes |
| 1922 | 364 | 100% | Yes |
| 1923 | 364 | 100% | Yes |
| 1924 | 366 | 100% | Yes |
| 1925 | 364 | 100% | Yes |
| 1926 | 364 | 100% | Yes |
| 1927 | 365 | 100% | Yes |
| 1928 | 366 | 100% | Yes |
| 1929 | 365 | 100% | Yes |
| 1930 | 363 | 99% | Yes |
| 1931 | 363 | 99% | Yes |
| 1932 | 365 | 100% | Yes |
| 1933 | 365 | 100% | Yes |
| 1934 | 364 | 100% | Yes |
| 1935 | 365 | 100% | Yes |
| 1936 | 365 | 100% | Yes |
| 1937 | 365 | 100% | Yes |
| 1938 | 364 | 100% | Yes |
| 1939 | 365 | 100% | Yes |
| 1940 | 366 | 100% | Yes |
| 1941 | 364 | 100% | Yes |
| 1942 | 364 | 100% | Yes |
| 1943 | 365 | 100% | Yes |
| 1944 | 366 | 100% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 245 | 67% | No |
| 1947 | 364 | 100% | Yes |
| 1948 | 366 | 100% | Yes |
| 1949 | 364 | 100% | Yes |
| 1950 | 359 | 98% | Yes |
| 1951 | 363 | 99% | Yes |
| 1952 | 365 | 100% | Yes |
| 1953 | 364 | 100% | Yes |
| 1954 | 364 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 364 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 362 | 99% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 364 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 365 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 273 | 75% | No |
| 1974 | 363 | 99% | Yes |
| 1975 | 327 | 90% | No |
| 1976 | 331 | 90% | Yes |
| 1977 | 335 | 92% | Yes |
| 1978 | 364 | 100% | Yes |
| 1979 | 359 | 98% | Yes |
| 1980 | 357 | 98% | Yes |
| 1981 | 361 | 99% | Yes |
| 1982 | 328 | 90% | No |
| 1983 | 364 | 100% | Yes |
| 1984 | 366 | 100% | Yes |
| 1985 | 358 | 98% | Yes |
| 1986 | 357 | 98% | Yes |
| 1987 | 359 | 98% | Yes |
| 1988 | 362 | 99% | Yes |
| 1989 | 364 | 100% | Yes |
| 1990 | 361 | 99% | Yes |
| 1991 | 363 | 99% | Yes |
| 1992 | 361 | 99% | Yes |
| 1993 | 358 | 98% | Yes |
| 1994 | 356 | 98% | Yes |
| 1995 | 362 | 99% | Yes |
| 1996 | 351 | 96% | Yes |
| 1997 | 363 | 99% | Yes |
| 1998 | 361 | 99% | Yes |
| 1999 | 360 | 99% | Yes |
| 2000 | 352 | 96% | Yes |
| 2001 | 340 | 93% | Yes |
| 2002 | 354 | 97% | Yes |
| 2003 | 365 | 100% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 353 | 97% | Yes |
| 2006 | 328 | 90% | No |
| 2007 | 358 | 98% | Yes |
| 2008 | 363 | 99% | Yes |
| 2009 | 295 | 81% | No |
| 2010 | 279 | 76% | No |
| 2011 | 287 | 79% | No |
| 2012 | 318 | 87% | No |
| 2013 | 293 | 80% | No |
| 2014 | 313 | 86% | No |
| 2015 | 349 | 96% | Yes |
| 2016 | 342 | 93% | Yes |
| 2017 | 281 | 77% | No |
| 2018 | 249 | 68% | No |
| 2019 | 246 | 67% | No |
| 2020 | 243 | 66% | No |
| 2021 | 258 | 71% | No |
| 2022 | 258 | 71% | No |
| 2023 | 228 | 62% | No |
| 2024 | 228 | 62% | No |
| 2025 | 92 | 25% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 2 April 2025 | Oskaloosa, US | daily rain | 26.7 mm (1.1 in) | 10.2 mm (0.4 in) | 55 years | 35 of 100 (Notable) |
| 20 February 2025 | Oskaloosa, US | daily low max | -13.3 C (8.1 F) | 0.5 C (0.9 F) | 130 years | 40 of 100 (Notable) |
| 19 February 2025 | Oskaloosa, US | daily low max (Tie) | -15.6 C (3.9 F) | tie | 96 years | 9 of 100 (Routine) |
| 12 October 2024 | Oskaloosa, US | daily high max (Tie) | 31.1 C (88.0 F) | tie | 124 years | 10 of 100 (Routine) |
| 23 September 2024 | Oskaloosa, US | daily high max (Tie) | 31.7 C (89.1 F) | tie | 86 years | 8 of 100 (Routine) |
| 31 July 2024 | Oskaloosa, US | daily rain | 75.4 mm (3.0 in) | 48.2 mm (1.9 in) | 61 years | 60 of 100 (Major) |
| 3 May 2024 | Oskaloosa, US | daily rain | 71.4 mm (2.8 in) | 33.0 mm (1.3 in) | 45 years | 51 of 100 (Notable) |
| 14 March 2024 | Oskaloosa, US | daily rain | 20.1 mm (0.8 in) | 6.4 mm (0.25 in) | 71 years | 20 of 100 (Routine) |
| 4 March 2024 | Oskaloosa, US | daily high max | 26.1 C (79.0 F) | 1.7 C (3.1 F) | 103 years | 42 of 100 (Notable) |
| 28 February 2024 | Oskaloosa, US | daily high max | 21.7 C (71.1 F) | 0.6 C (1.1 F) | 92 years | 37 of 100 (Notable) |
| 27 February 2024 | Oskaloosa, US | daily high max | 24.4 C (75.9 F) | 2.2 C (4.0 F) | 48 years | 27 of 100 (Routine) |
| 9 February 2024 | Oskaloosa, US | daily high max | 18.9 C (66.0 F) | 1.7 C (3.1 F) | 80 years | 36 of 100 (Notable) |
| 19 January 2024 | Oskaloosa, US | daily snow depth (Tie) | 43.2 cm (17.0 in) | tie | 88 years | 9 of 100 (Routine) |
| 17 January 2024 | Oskaloosa, US | daily snow depth (Tie) | 38.1 cm (15.0 in) | tie | 88 years | 9 of 100 (Routine) |
| 16 January 2024 | Oskaloosa, US | daily snow depth | 40.6 cm (16.0 in) | 10.1 cm (4.0 in) | 84 years | 47 of 100 (Notable) |
| 15 January 2024 | Oskaloosa, US | daily snowfall | 13.0 cm (5.1 in) | 5.4 cm (2.1 in) | 116 years | 51 of 100 (Notable) |
| 15 January 2024 | Oskaloosa, US | daily snow depth | 43.2 cm (17.0 in) | 12.7 cm (5.0 in) | 84 years | 50 of 100 (Notable) |
| 15 January 2024 | Oskaloosa, US | daily low max | -22.2 C (-8.0 F) | 4.4 C (7.9 F) | 52 years | 31 of 100 (Routine) |
| 12 January 2024 | Oskaloosa, US | daily snow depth | 35.6 cm (14.0 in) | 17.8 cm (7.0 in) | 104 years | 61 of 100 (Major) |
| 11 January 2024 | Oskaloosa, US | daily snow depth | 25.4 cm (10.0 in) | 2.5 cm (1.0 in) | 81 years | 37 of 100 (Notable) |
Climate Trend
110 complete years, 1893 to 2022| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1893 | 8.3 C | -1.76 C |
| 1895 | 9.2 C | -0.82 C |
| 1896 | 10.1 C | +0.02 C |
| 1897 | 9.8 C | -0.24 C |
| 1898 | 9.4 C | -0.67 C |
| 1899 | 9.6 C | -0.42 C |
| 1900 | 10.1 C | +0.09 C |
| 1901 | 10.1 C | +0.04 C |
| 1902 | 9.3 C | -0.78 C |
| 1903 | 9.2 C | -0.85 C |
| 1904 | 8.6 C | -1.43 C |
| 1905 | 9.3 C | -0.78 C |
| 1906 | 10.0 C | -0.05 C |
| 1908 | 10.7 C | +0.63 C |
| 1909 | 9.7 C | -0.38 C |
| 1910 | 10.2 C | +0.14 C |
| 1911 | 10.9 C | +0.86 C |
| 1912 | 8.7 C | -1.29 C |
| 1913 | 10.6 C | +0.60 C |
| 1914 | 10.2 C | +0.21 C |
| 1916 | 9.2 C | -0.86 C |
| 1917 | 7.9 C | -2.09 C |
| 1918 | 10.6 C | +0.55 C |
| 1919 | 10.2 C | +0.18 C |
| 1920 | 9.9 C | -0.15 C |
| 1921 | 11.9 C | +1.82 C |
| 1922 | 10.9 C | +0.88 C |
| 1923 | 10.1 C | +0.04 C |
| 1924 | 8.7 C | -1.34 C |
| 1925 | 9.9 C | -0.17 C |
| 1926 | 9.7 C | -0.33 C |
| 1927 | 10.0 C | -0.02 C |
| 1928 | 10.2 C | +0.18 C |
| 1929 | 8.9 C | -1.12 C |
| 1930 | 10.9 C | +0.83 C |
| 1931 | 12.4 C | +2.32 C |
| 1932 | 9.9 C | -0.14 C |
| 1933 | 11.6 C | +1.56 C |
| 1934 | 12.1 C | +2.04 C |
| 1935 | 10.2 C | +0.12 C |
| 1936 | 10.6 C | +0.58 C |
| 1937 | 9.8 C | -0.23 C |
| 1938 | 11.6 C | +1.55 C |
| 1939 | 10.8 C | +0.80 C |
| 1940 | 9.6 C | -0.47 C |
| 1941 | 11.2 C | +1.14 C |
| 1942 | 10.4 C | +0.33 C |
| 1943 | 9.4 C | -0.63 C |
| 1944 | 10.2 C | +0.15 C |
| 1945 | 9.2 C | -0.83 C |
| 1947 | 10.6 C | +0.53 C |
| 1948 | 10.6 C | +0.53 C |
| 1949 | 10.7 C | +0.69 C |
| 1951 | 8.9 C | -1.17 C |
| 1952 | 10.7 C | +0.66 C |
| 1953 | 11.4 C | +1.34 C |
| 1954 | 11.2 C | +1.17 C |
| 1955 | 10.3 C | +0.29 C |
| 1956 | 11.0 C | +0.96 C |
| 1957 | 10.3 C | +0.22 C |
| 1958 | 9.4 C | -0.63 C |
| 1959 | 9.7 C | -0.29 C |
| 1960 | 9.5 C | -0.56 C |
| 1961 | 10.0 C | -0.04 C |
| 1962 | 9.7 C | -0.34 C |
| 1963 | 10.1 C | +0.11 C |
| 1964 | 10.9 C | +0.83 C |
| 1965 | 10.2 C | +0.17 C |
| 1966 | 9.8 C | -0.27 C |
| 1967 | 10.2 C | +0.16 C |
| 1968 | 10.7 C | +0.63 C |
| 1969 | 10.0 C | -0.02 C |
| 1970 | 10.4 C | +0.36 C |
| 1971 | 10.8 C | +0.76 C |
| 1972 | 9.7 C | -0.35 C |
| 1974 | 10.5 C | +0.44 C |
| 1978 | 8.8 C | -1.25 C |
| 1979 | 8.9 C | -1.12 C |
| 1980 | 11.0 C | +0.93 C |
| 1981 | 11.3 C | +1.26 C |
| 1982 | 9.4 C | -0.64 C |
| 1983 | 10.6 C | +0.52 C |
| 1984 | 10.0 C | -0.08 C |
| 1985 | 9.0 C | -1.08 C |
| 1986 | 10.2 C | +0.19 C |
| 1987 | 11.4 C | +1.35 C |
| 1988 | 10.2 C | +0.17 C |
| 1989 | 8.9 C | -1.10 C |
| 1990 | 10.7 C | +0.64 C |
| 1991 | 10.4 C | +0.33 C |
| 1992 | 9.6 C | -0.45 C |
| 1993 | 8.7 C | -1.29 C |
| 1994 | 9.6 C | -0.48 C |
| 1995 | 9.2 C | -0.79 C |
| 1996 | 8.4 C | -1.59 C |
| 1997 | 9.1 C | -0.96 C |
| 1998 | 10.9 C | +0.89 C |
| 2002 | 10.0 C | -0.04 C |
| 2003 | 9.3 C | -0.71 C |
| 2004 | 9.7 C | -0.35 C |
| 2005 | 10.2 C | +0.13 C |
| 2007 | 9.9 C | -0.17 C |
| 2008 | 8.1 C | -1.98 C |
| 2011 | 10.2 C | +0.21 C |
| 2012 | 11.9 C | +1.87 C |
| 2013 | 9.2 C | -0.79 C |
| 2014 | 8.4 C | -1.64 C |
| 2015 | 10.7 C | +0.67 C |
| 2016 | 11.5 C | +1.47 C |
| 2022 | 9.6 C | -0.43 C |
The fitted trend in annual mean temperature here over 1893 to 2022 is 0.00 C (-0.04 to 0.05) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.01 F (-0.08 to 0.09) per decade. The slope is a straight line fitted to 110 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.00 C (-0.04 to 0.05) per decade | 0.01 F (-0.08 to 0.09) per decade | 1893 to 2022 | 110 | Not clearly different from zero |
| Mean daily maximum | 0.00 C (-0.06 to 0.05) per decade | 0.00 F (-0.10 to 0.09) per decade | 1893 to 2022 | 110 | Not clearly different from zero |
| Mean daily minimum | 0.01 C (-0.04 to 0.06) per decade | 0.01 F (-0.08 to 0.10) per decade | 1893 to 2022 | 110 | 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 2025| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 44.4 C (111.9 F) | 1934 | 36.7 C (98.1 F) | 133 |
| Coldest night (TNn) | -35.0 C (-31.0 F) | 1905 | -26.1 C (-15.0 F) | 133 |
| Wettest day (Rx1day) | 165.4 mm (6.5 in) | 2000 | 57.2 mm (2.3 in) | 133 |
| Wettest five days (Rx5day) | 232.8 mm (9.2 in) | 2007 | 84.8 mm (3.3 in) | 132 |
| Longest dry spell (CDD) | 46 days | 1952 | 21 days | 133 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1893 | 37.2 C (99.0 F) |
| 1894 | 39.4 C (102.9 F) |
| 1895 | 37.2 C (99.0 F) |
| 1896 | 36.7 C (98.1 F) |
| 1897 | 37.8 C (100.0 F) |
| 1898 | 37.2 C (99.0 F) |
| 1899 | 37.2 C (99.0 F) |
| 1900 | 35.6 C (96.1 F) |
| 1901 | 41.7 C (107.1 F) |
| 1902 | 33.3 C (91.9 F) |
| 1903 | 34.4 C (93.9 F) |
| 1904 | 33.3 C (91.9 F) |
| 1905 | 34.4 C (93.9 F) |
| 1906 | 35.6 C (96.1 F) |
| 1907 | 33.3 C (91.9 F) |
| 1908 | 38.3 C (100.9 F) |
| 1909 | 35.6 C (96.1 F) |
| 1910 | 37.2 C (99.0 F) |
| 1911 | 42.8 C (109.0 F) |
| 1912 | 37.2 C (99.0 F) |
| 1913 | 40.6 C (105.1 F) |
| 1914 | 37.8 C (100.0 F) |
| 1915 | 32.8 C (91.0 F) |
| 1916 | 38.9 C (102.0 F) |
| 1917 | 36.7 C (98.1 F) |
| 1918 | 42.8 C (109.0 F) |
| 1919 | 37.2 C (99.0 F) |
| 1920 | 35.0 C (95.0 F) |
| 1921 | 35.0 C (95.0 F) |
| 1922 | 36.1 C (97.0 F) |
| 1923 | 36.1 C (97.0 F) |
| 1924 | 35.6 C (96.1 F) |
| 1925 | 37.2 C (99.0 F) |
| 1926 | 36.1 C (97.0 F) |
| 1927 | 37.2 C (99.0 F) |
| 1928 | 33.3 C (91.9 F) |
| 1929 | 36.1 C (97.0 F) |
| 1930 | 42.8 C (109.0 F) |
| 1931 | 39.4 C (102.9 F) |
| 1932 | 35.0 C (95.0 F) |
| 1933 | 38.3 C (100.9 F) |
| 1934 | 44.4 C (111.9 F) |
| 1935 | 35.6 C (96.1 F) |
| 1936 | 44.4 C (111.9 F) |
| 1937 | 38.9 C (102.0 F) |
| 1938 | 36.7 C (98.1 F) |
| 1939 | 37.2 C (99.0 F) |
| 1940 | 41.1 C (106.0 F) |
| 1941 | 37.8 C (100.0 F) |
| 1942 | 35.6 C (96.1 F) |
| 1943 | 34.4 C (93.9 F) |
| 1944 | 36.1 C (97.0 F) |
| 1945 | 36.7 C (98.1 F) |
| 1946 | 35.0 C (95.0 F) |
| 1947 | 39.4 C (102.9 F) |
| 1948 | 39.4 C (102.9 F) |
| 1949 | 35.6 C (96.1 F) |
| 1950 | 33.3 C (91.9 F) |
| 1951 | 36.1 C (97.0 F) |
| 1952 | 36.7 C (98.1 F) |
| 1953 | 38.9 C (102.0 F) |
| 1954 | 40.6 C (105.1 F) |
| 1955 | 40.6 C (105.1 F) |
| 1956 | 41.1 C (106.0 F) |
| 1957 | 37.8 C (100.0 F) |
| 1958 | 33.9 C (93.0 F) |
| 1959 | 33.9 C (93.0 F) |
| 1960 | 36.1 C (97.0 F) |
| 1961 | 35.6 C (96.1 F) |
| 1962 | 36.1 C (97.0 F) |
| 1963 | 37.2 C (99.0 F) |
| 1964 | 38.3 C (100.9 F) |
| 1965 | 37.8 C (100.0 F) |
| 1966 | 37.8 C (100.0 F) |
| 1967 | 35.0 C (95.0 F) |
| 1968 | 37.2 C (99.0 F) |
| 1969 | 34.4 C (93.9 F) |
| 1970 | 37.8 C (100.0 F) |
| 1971 | 36.1 C (97.0 F) |
| 1972 | 35.6 C (96.1 F) |
| 1973 | 35.0 C (95.0 F) |
| 1974 | 37.8 C (100.0 F) |
| 1975 | 36.1 C (97.0 F) |
| 1976 | 35.6 C (96.1 F) |
| 1977 | 40.0 C (104.0 F) |
| 1978 | 35.6 C (96.1 F) |
| 1979 | 36.1 C (97.0 F) |
| 1980 | 40.0 C (104.0 F) |
| 1981 | 35.6 C (96.1 F) |
| 1982 | 35.0 C (95.0 F) |
| 1983 | 40.6 C (105.1 F) |
| 1984 | 37.2 C (99.0 F) |
| 1985 | 35.6 C (96.1 F) |
| 1986 | 33.3 C (91.9 F) |
| 1987 | 36.7 C (98.1 F) |
| 1988 | 40.0 C (104.0 F) |
| 1989 | 37.2 C (99.0 F) |
| 1990 | 35.6 C (96.1 F) |
| 1991 | 36.7 C (98.1 F) |
| 1992 | 32.2 C (90.0 F) |
| 1993 | 32.8 C (91.0 F) |
| 1994 | 33.9 C (93.0 F) |
| 1995 | 37.2 C (99.0 F) |
| 1996 | 35.6 C (96.1 F) |
| 1997 | 35.6 C (96.1 F) |
| 1998 | 34.4 C (93.9 F) |
| 1999 | 37.2 C (99.0 F) |
| 2000 | 36.7 C (98.1 F) |
| 2001 | 36.7 C (98.1 F) |
| 2002 | 35.6 C (96.1 F) |
| 2003 | 37.8 C (100.0 F) |
| 2004 | 32.8 C (91.0 F) |
| 2005 | 37.8 C (100.0 F) |
| 2006 | 38.3 C (100.9 F) |
| 2007 | 33.9 C (93.0 F) |
| 2008 | 34.4 C (93.9 F) |
| 2009 | 34.4 C (93.9 F) |
| 2010 | 34.4 C (93.9 F) |
| 2011 | 38.3 C (100.9 F) |
| 2012 | 40.6 C (105.1 F) |
| 2013 | 39.4 C (102.9 F) |
| 2014 | 32.8 C (91.0 F) |
| 2015 | 34.4 C (93.9 F) |
| 2016 | 35.6 C (96.1 F) |
| 2017 | 37.2 C (99.0 F) |
| 2018 | 36.1 C (97.0 F) |
| 2019 | 34.4 C (93.9 F) |
| 2020 | 35.6 C (96.1 F) |
| 2021 | 35.0 C (95.0 F) |
| 2022 | 37.2 C (99.0 F) |
| 2023 | 39.4 C (102.9 F) |
| 2024 | 36.1 C (97.0 F) |
| 2025 | 30.6 C (87.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1893 | -29.4 C (-20.9 F) |
| 1894 | -32.8 C (-27.0 F) |
| 1895 | -29.4 C (-20.9 F) |
| 1896 | -23.3 C (-9.9 F) |
| 1897 | -27.8 C (-18.0 F) |
| 1898 | -25.6 C (-14.1 F) |
| 1899 | -31.7 C (-25.1 F) |
| 1900 | -24.4 C (-11.9 F) |
| 1901 | -27.2 C (-17.0 F) |
| 1902 | -27.2 C (-17.0 F) |
| 1903 | -26.1 C (-15.0 F) |
| 1904 | -30.6 C (-23.1 F) |
| 1905 | -35.0 C (-31.0 F) |
| 1906 | -23.9 C (-11.0 F) |
| 1907 | -25.6 C (-14.1 F) |
| 1908 | -22.8 C (-9.0 F) |
| 1909 | -25.0 C (-13.0 F) |
| 1910 | -30.0 C (-22.0 F) |
| 1911 | -26.1 C (-15.0 F) |
| 1912 | -35.0 C (-31.0 F) |
| 1913 | -26.1 C (-15.0 F) |
| 1914 | -26.1 C (-15.0 F) |
| 1915 | -30.6 C (-23.1 F) |
| 1916 | -30.0 C (-22.0 F) |
| 1917 | -30.6 C (-23.1 F) |
| 1918 | -31.7 C (-25.1 F) |
| 1919 | -30.6 C (-23.1 F) |
| 1920 | -23.9 C (-11.0 F) |
| 1921 | -24.4 C (-11.9 F) |
| 1922 | -24.4 C (-11.9 F) |
| 1923 | -25.0 C (-13.0 F) |
| 1924 | -34.4 C (-29.9 F) |
| 1925 | -25.0 C (-13.0 F) |
| 1926 | -25.6 C (-14.1 F) |
| 1927 | -26.7 C (-16.1 F) |
| 1928 | -23.9 C (-11.0 F) |
| 1929 | -27.2 C (-17.0 F) |
| 1930 | -32.2 C (-26.0 F) |
| 1931 | -18.9 C (-2.0 F) |
| 1932 | -27.8 C (-18.0 F) |
| 1933 | -30.0 C (-22.0 F) |
| 1934 | -25.6 C (-14.1 F) |
| 1935 | -24.4 C (-11.9 F) |
| 1936 | -30.0 C (-22.0 F) |
| 1937 | -21.7 C (-7.1 F) |
| 1938 | -22.2 C (-8.0 F) |
| 1939 | -22.2 C (-8.0 F) |
| 1940 | -28.3 C (-18.9 F) |
| 1941 | -20.0 C (-4.0 F) |
| 1942 | -28.9 C (-20.0 F) |
| 1943 | -28.3 C (-18.9 F) |
| 1944 | -25.6 C (-14.1 F) |
| 1945 | -25.6 C (-14.1 F) |
| 1946 | -21.1 C (-6.0 F) |
| 1947 | -28.3 C (-18.9 F) |
| 1948 | -23.3 C (-9.9 F) |
| 1949 | -25.6 C (-14.1 F) |
| 1950 | -25.0 C (-13.0 F) |
| 1951 | -26.7 C (-16.1 F) |
| 1952 | -24.4 C (-11.9 F) |
| 1953 | -23.3 C (-9.9 F) |
| 1954 | -23.9 C (-11.0 F) |
| 1955 | -29.4 C (-20.9 F) |
| 1956 | -25.6 C (-14.1 F) |
| 1957 | -32.2 C (-26.0 F) |
| 1958 | -30.6 C (-23.1 F) |
| 1959 | -28.3 C (-18.9 F) |
| 1960 | -29.4 C (-20.9 F) |
| 1961 | -27.2 C (-17.0 F) |
| 1962 | -34.4 C (-29.9 F) |
| 1963 | -30.6 C (-23.1 F) |
| 1964 | -21.1 C (-6.0 F) |
| 1965 | -27.2 C (-17.0 F) |
| 1966 | -29.4 C (-20.9 F) |
| 1967 | -24.4 C (-11.9 F) |
| 1968 | -26.7 C (-16.1 F) |
| 1969 | -23.9 C (-11.0 F) |
| 1970 | -29.4 C (-20.9 F) |
| 1971 | -25.6 C (-14.1 F) |
| 1972 | -27.2 C (-17.0 F) |
| 1973 | -25.0 C (-13.0 F) |
| 1974 | -28.3 C (-18.9 F) |
| 1975 | -26.1 C (-15.0 F) |
| 1976 | -25.6 C (-14.1 F) |
| 1977 | -30.0 C (-22.0 F) |
| 1978 | -26.1 C (-15.0 F) |
| 1979 | -31.7 C (-25.1 F) |
| 1980 | -23.9 C (-11.0 F) |
| 1981 | -26.1 C (-15.0 F) |
| 1982 | -31.1 C (-24.0 F) |
| 1983 | -30.0 C (-22.0 F) |
| 1984 | -27.8 C (-18.0 F) |
| 1985 | -30.0 C (-22.0 F) |
| 1986 | -23.9 C (-11.0 F) |
| 1987 | -21.1 C (-6.0 F) |
| 1988 | -27.2 C (-17.0 F) |
| 1989 | -31.1 C (-24.0 F) |
| 1990 | -23.9 C (-11.0 F) |
| 1991 | -25.6 C (-14.1 F) |
| 1992 | -21.7 C (-7.1 F) |
| 1993 | -22.2 C (-8.0 F) |
| 1994 | -30.0 C (-22.0 F) |
| 1995 | -22.8 C (-9.0 F) |
| 1996 | -33.9 C (-29.0 F) |
| 1997 | -26.1 C (-15.0 F) |
| 1998 | -23.9 C (-11.0 F) |
| 1999 | -28.3 C (-18.9 F) |
| 2000 | -27.2 C (-17.0 F) |
| 2001 | -22.2 C (-8.0 F) |
| 2002 | -20.6 C (-5.1 F) |
| 2003 | -22.8 C (-9.0 F) |
| 2004 | -23.9 C (-11.0 F) |
| 2005 | -24.4 C (-11.9 F) |
| 2006 | -22.8 C (-9.0 F) |
| 2007 | -22.8 C (-9.0 F) |
| 2008 | -25.0 C (-13.0 F) |
| 2009 | -30.6 C (-23.1 F) |
| 2010 | -26.1 C (-15.0 F) |
| 2011 | -23.3 C (-9.9 F) |
| 2012 | -17.2 C (1.0 F) |
| 2013 | -28.9 C (-20.0 F) |
| 2014 | -25.6 C (-14.1 F) |
| 2015 | -25.6 C (-14.1 F) |
| 2016 | -25.6 C (-14.1 F) |
| 2017 | -25.0 C (-13.0 F) |
| 2018 | -32.2 C (-26.0 F) |
| 2019 | -31.7 C (-25.1 F) |
| 2020 | -23.9 C (-11.0 F) |
| 2021 | -26.7 C (-16.1 F) |
| 2022 | -26.1 C (-15.0 F) |
| 2023 | -20.6 C (-5.1 F) |
| 2024 | -27.8 C (-18.0 F) |
| 2025 | -25.6 C (-14.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1893 | 38.1 mm (1.5 in) |
| 1894 | 6.4 mm (0.25 in) |
| 1895 | 25.4 mm (1.0 in) |
| 1896 | 50.8 mm (2.0 in) |
| 1897 | 69.9 mm (2.8 in) |
| 1898 | 31.8 mm (1.3 in) |
| 1899 | 49.5 mm (1.9 in) |
| 1900 | 49.5 mm (1.9 in) |
| 1901 | 26.7 mm (1.1 in) |
| 1902 | 79.5 mm (3.1 in) |
| 1903 | 87.1 mm (3.4 in) |
| 1904 | 35.3 mm (1.4 in) |
| 1905 | 53.8 mm (2.1 in) |
| 1906 | 44.5 mm (1.8 in) |
| 1907 | 54.1 mm (2.1 in) |
| 1908 | 83.3 mm (3.3 in) |
| 1909 | 44.2 mm (1.7 in) |
| 1910 | 39.6 mm (1.6 in) |
| 1911 | 59.2 mm (2.3 in) |
| 1912 | 45.2 mm (1.8 in) |
| 1913 | 55.1 mm (2.2 in) |
| 1914 | 80.0 mm (3.1 in) |
| 1915 | 43.9 mm (1.7 in) |
| 1916 | 61.7 mm (2.4 in) |
| 1917 | 65.8 mm (2.6 in) |
| 1918 | 30.7 mm (1.2 in) |
| 1919 | 60.2 mm (2.4 in) |
| 1920 | 43.2 mm (1.7 in) |
| 1921 | 58.9 mm (2.3 in) |
| 1922 | 58.4 mm (2.3 in) |
| 1923 | 92.7 mm (3.6 in) |
| 1924 | 47.5 mm (1.9 in) |
| 1925 | 113.8 mm (4.5 in) |
| 1926 | 54.9 mm (2.2 in) |
| 1927 | 52.6 mm (2.1 in) |
| 1928 | 50.3 mm (2.0 in) |
| 1929 | 33.8 mm (1.3 in) |
| 1930 | 89.7 mm (3.5 in) |
| 1931 | 75.9 mm (3.0 in) |
| 1932 | 138.4 mm (5.4 in) |
| 1933 | 27.7 mm (1.1 in) |
| 1934 | 68.8 mm (2.7 in) |
| 1935 | 52.8 mm (2.1 in) |
| 1936 | 35.1 mm (1.4 in) |
| 1937 | 37.1 mm (1.5 in) |
| 1938 | 57.2 mm (2.3 in) |
| 1939 | 52.1 mm (2.1 in) |
| 1940 | 58.7 mm (2.3 in) |
| 1941 | 55.6 mm (2.2 in) |
| 1942 | 46.7 mm (1.8 in) |
| 1943 | 32.0 mm (1.3 in) |
| 1944 | 71.1 mm (2.8 in) |
| 1945 | 51.8 mm (2.0 in) |
| 1946 | 59.9 mm (2.4 in) |
| 1947 | 41.1 mm (1.6 in) |
| 1948 | 42.9 mm (1.7 in) |
| 1949 | 42.2 mm (1.7 in) |
| 1950 | 57.7 mm (2.3 in) |
| 1951 | 86.4 mm (3.4 in) |
| 1952 | 118.1 mm (4.6 in) |
| 1953 | 35.6 mm (1.4 in) |
| 1954 | 54.4 mm (2.1 in) |
| 1955 | 62.0 mm (2.4 in) |
| 1956 | 29.7 mm (1.2 in) |
| 1957 | 56.6 mm (2.2 in) |
| 1958 | 48.3 mm (1.9 in) |
| 1959 | 79.5 mm (3.1 in) |
| 1960 | 78.7 mm (3.1 in) |
| 1961 | 141.0 mm (5.6 in) |
| 1962 | 86.6 mm (3.4 in) |
| 1963 | 78.0 mm (3.1 in) |
| 1964 | 64.0 mm (2.5 in) |
| 1965 | 67.1 mm (2.6 in) |
| 1966 | 47.5 mm (1.9 in) |
| 1967 | 74.4 mm (2.9 in) |
| 1968 | 53.6 mm (2.1 in) |
| 1969 | 81.8 mm (3.2 in) |
| 1970 | 136.1 mm (5.4 in) |
| 1971 | 69.6 mm (2.7 in) |
| 1972 | 44.2 mm (1.7 in) |
| 1973 | 38.1 mm (1.5 in) |
| 1974 | 50.8 mm (2.0 in) |
| 1975 | 89.4 mm (3.5 in) |
| 1976 | 81.3 mm (3.2 in) |
| 1977 | 53.3 mm (2.1 in) |
| 1978 | 53.8 mm (2.1 in) |
| 1979 | 40.6 mm (1.6 in) |
| 1980 | 57.9 mm (2.3 in) |
| 1981 | 44.7 mm (1.8 in) |
| 1982 | 49.8 mm (2.0 in) |
| 1983 | 68.6 mm (2.7 in) |
| 1984 | 75.7 mm (3.0 in) |
| 1985 | 52.1 mm (2.1 in) |
| 1986 | 118.1 mm (4.6 in) |
| 1987 | 92.5 mm (3.6 in) |
| 1988 | 33.5 mm (1.3 in) |
| 1989 | 63.5 mm (2.5 in) |
| 1990 | 57.2 mm (2.3 in) |
| 1991 | 47.8 mm (1.9 in) |
| 1992 | 53.3 mm (2.1 in) |
| 1993 | 64.8 mm (2.6 in) |
| 1994 | 110.5 mm (4.4 in) |
| 1995 | 45.0 mm (1.8 in) |
| 1996 | 69.9 mm (2.8 in) |
| 1997 | 52.1 mm (2.1 in) |
| 1998 | 91.7 mm (3.6 in) |
| 1999 | 57.2 mm (2.3 in) |
| 2000 | 165.4 mm (6.5 in) |
| 2001 | 58.7 mm (2.3 in) |
| 2002 | 40.6 mm (1.6 in) |
| 2003 | 119.1 mm (4.7 in) |
| 2004 | 53.1 mm (2.1 in) |
| 2005 | 44.5 mm (1.8 in) |
| 2006 | 101.6 mm (4.0 in) |
| 2007 | 127.0 mm (5.0 in) |
| 2008 | 81.3 mm (3.2 in) |
| 2009 | 76.2 mm (3.0 in) |
| 2010 | 101.6 mm (4.0 in) |
| 2011 | 66.0 mm (2.6 in) |
| 2012 | 57.4 mm (2.3 in) |
| 2013 | 97.0 mm (3.8 in) |
| 2014 | 128.3 mm (5.1 in) |
| 2015 | 75.4 mm (3.0 in) |
| 2016 | 62.0 mm (2.4 in) |
| 2017 | 34.0 mm (1.3 in) |
| 2018 | 53.3 mm (2.1 in) |
| 2019 | 43.9 mm (1.7 in) |
| 2020 | 64.8 mm (2.6 in) |
| 2021 | 61.2 mm (2.4 in) |
| 2022 | 31.0 mm (1.2 in) |
| 2023 | 24.9 mm (1.0 in) |
| 2024 | 75.4 mm (3.0 in) |
| 2025 | 31.5 mm (1.2 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1893 | 17.3 mm (0.7 in) |
| 1894 | 0.0 mm (0.00 in) |
| 1895 | 42.4 mm (1.7 in) |
| 1896 | 57.7 mm (2.3 in) |
| 1897 | 22.4 mm (0.9 in) |
| 1898 | 42.2 mm (1.7 in) |
| 1899 | 54.8 mm (2.2 in) |
| 1900 | 82.5 mm (3.2 in) |
| 1901 | 44.4 mm (1.7 in) |
| 1902 | 83.3 mm (3.3 in) |
| 1903 | 143.7 mm (5.7 in) |
| 1904 | 54.9 mm (2.2 in) |
| 1905 | 50.8 mm (2.0 in) |
| 1906 | 46.7 mm (1.8 in) |
| 1907 | 65.1 mm (2.6 in) |
| 1908 | 101.6 mm (4.0 in) |
| 1909 | 61.9 mm (2.4 in) |
| 1910 | 39.6 mm (1.6 in) |
| 1911 | 98.6 mm (3.9 in) |
| 1912 | 30.7 mm (1.2 in) |
| 1913 | 63.5 mm (2.5 in) |
| 1914 | 138.2 mm (5.4 in) |
| 1915 | 65.3 mm (2.6 in) |
| 1916 | 67.4 mm (2.7 in) |
| 1917 | 41.2 mm (1.6 in) |
| 1918 | 31.7 mm (1.2 in) |
| 1919 | 94.5 mm (3.7 in) |
| 1920 | 51.9 mm (2.0 in) |
| 1921 | 82.1 mm (3.2 in) |
| 1922 | 82.5 mm (3.2 in) |
| 1923 | 112.2 mm (4.4 in) |
| 1924 | 55.9 mm (2.2 in) |
| 1925 | 146.6 mm (5.8 in) |
| 1926 | 97.8 mm (3.9 in) |
| 1927 | 102.6 mm (4.0 in) |
| 1928 | 110.2 mm (4.3 in) |
| 1929 | 50.3 mm (2.0 in) |
| 1930 | 107.5 mm (4.2 in) |
| 1931 | 123.5 mm (4.9 in) |
| 1932 | 132.2 mm (5.2 in) |
| 1933 | 43.6 mm (1.7 in) |
| 1934 | 89.4 mm (3.5 in) |
| 1935 | 83.6 mm (3.3 in) |
| 1936 | 48.3 mm (1.9 in) |
| 1937 | 44.2 mm (1.7 in) |
| 1938 | 115.1 mm (4.5 in) |
| 1939 | 59.2 mm (2.3 in) |
| 1940 | 97.0 mm (3.8 in) |
| 1941 | 61.3 mm (2.4 in) |
| 1942 | 46.7 mm (1.8 in) |
| 1943 | 39.1 mm (1.5 in) |
| 1944 | 66.0 mm (2.6 in) |
| 1945 | 95.3 mm (3.8 in) |
| 1946 | 93.2 mm (3.7 in) |
| 1947 | 69.6 mm (2.7 in) |
| 1948 | 55.4 mm (2.2 in) |
| 1949 | 81.3 mm (3.2 in) |
| 1950 | 91.9 mm (3.6 in) |
| 1951 | 93.2 mm (3.7 in) |
| 1952 | 134.6 mm (5.3 in) |
| 1953 | 67.0 mm (2.6 in) |
| 1954 | 75.9 mm (3.0 in) |
| 1955 | 76.0 mm (3.0 in) |
| 1956 | 56.3 mm (2.2 in) |
| 1957 | 72.4 mm (2.9 in) |
| 1958 | 77.2 mm (3.0 in) |
| 1959 | 127.3 mm (5.0 in) |
| 1960 | 93.2 mm (3.7 in) |
| 1961 | 171.2 mm (6.7 in) |
| 1962 | 101.1 mm (4.0 in) |
| 1963 | 99.5 mm (3.9 in) |
| 1964 | 105.1 mm (4.1 in) |
| 1965 | 159.9 mm (6.3 in) |
| 1966 | 67.6 mm (2.7 in) |
| 1967 | 93.8 mm (3.7 in) |
| 1968 | 67.7 mm (2.7 in) |
| 1969 | 154.2 mm (6.1 in) |
| 1970 | 158.9 mm (6.3 in) |
| 1971 | 86.0 mm (3.4 in) |
| 1972 | 104.7 mm (4.1 in) |
| 1973 | 64.8 mm (2.6 in) |
| 1974 | 90.0 mm (3.5 in) |
| 1975 | 106.7 mm (4.2 in) |
| 1976 | 103.7 mm (4.1 in) |
| 1977 | 118.6 mm (4.7 in) |
| 1978 | 137.6 mm (5.4 in) |
| 1979 | 101.1 mm (4.0 in) |
| 1980 | 70.6 mm (2.8 in) |
| 1981 | 89.7 mm (3.5 in) |
| 1982 | 104.9 mm (4.1 in) |
| 1983 | 93.0 mm (3.7 in) |
| 1984 | 102.8 mm (4.0 in) |
| 1985 | 74.5 mm (2.9 in) |
| 1986 | 137.2 mm (5.4 in) |
| 1987 | 129.9 mm (5.1 in) |
| 1988 | 54.1 mm (2.1 in) |
| 1989 | 119.9 mm (4.7 in) |
| 1990 | 110.0 mm (4.3 in) |
| 1991 | 59.0 mm (2.3 in) |
| 1992 | 110.2 mm (4.3 in) |
| 1993 | 165.2 mm (6.5 in) |
| 1994 | 110.5 mm (4.4 in) |
| 1995 | 67.3 mm (2.6 in) |
| 1996 | 119.6 mm (4.7 in) |
| 1997 | 100.8 mm (4.0 in) |
| 1998 | 109.6 mm (4.3 in) |
| 1999 | 74.7 mm (2.9 in) |
| 2000 | 231.2 mm (9.1 in) |
| 2001 | 76.2 mm (3.0 in) |
| 2002 | 78.2 mm (3.1 in) |
| 2003 | 192.0 mm (7.6 in) |
| 2004 | 109.3 mm (4.3 in) |
| 2005 | 55.6 mm (2.2 in) |
| 2006 | 116.8 mm (4.6 in) |
| 2007 | 232.8 mm (9.2 in) |
| 2008 | 114.3 mm (4.5 in) |
| 2009 | 143.9 mm (5.7 in) |
| 2010 | 160.0 mm (6.3 in) |
| 2011 | 79.5 mm (3.1 in) |
| 2012 | 79.5 mm (3.1 in) |
| 2013 | 115.3 mm (4.5 in) |
| 2014 | 141.7 mm (5.6 in) |
| 2015 | 102.2 mm (4.0 in) |
| 2016 | 100.4 mm (4.0 in) |
| 2017 | 55.9 mm (2.2 in) |
| 2018 | 133.1 mm (5.2 in) |
| 2019 | 2.1 mm (0.08 in) |
| 2020 | n/a |
| 2021 | 3.3 mm (0.13 in) |
| 2022 | 0.5 mm (0.02 in) |
| 2023 | 20.6 mm (0.8 in) |
| 2024 | 71.6 mm (2.8 in) |
| 2025 | 36.8 mm (1.4 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1893 | 25 days |
| 1894 | 30 days |
| 1895 | 19 days |
| 1896 | 20 days |
| 1897 | 28 days |
| 1898 | 21 days |
| 1899 | 13 days |
| 1900 | 17 days |
| 1901 | 18 days |
| 1902 | 18 days |
| 1903 | 27 days |
| 1904 | 39 days |
| 1905 | 17 days |
| 1906 | 22 days |
| 1907 | 20 days |
| 1908 | 24 days |
| 1909 | 17 days |
| 1910 | 23 days |
| 1911 | 14 days |
| 1912 | 17 days |
| 1913 | 33 days |
| 1914 | 22 days |
| 1915 | 22 days |
| 1916 | 28 days |
| 1917 | 18 days |
| 1918 | 18 days |
| 1919 | 31 days |
| 1920 | 16 days |
| 1921 | 13 days |
| 1922 | 18 days |
| 1923 | 13 days |
| 1924 | 20 days |
| 1925 | 25 days |
| 1926 | 15 days |
| 1927 | 17 days |
| 1928 | 14 days |
| 1929 | 12 days |
| 1930 | 17 days |
| 1931 | 39 days |
| 1932 | 22 days |
| 1933 | 21 days |
| 1934 | 18 days |
| 1935 | 14 days |
| 1936 | 20 days |
| 1937 | 13 days |
| 1938 | 24 days |
| 1939 | 23 days |
| 1940 | 20 days |
| 1941 | 17 days |
| 1942 | 35 days |
| 1943 | 26 days |
| 1944 | 17 days |
| 1945 | 15 days |
| 1946 | 12 days |
| 1947 | 21 days |
| 1948 | 27 days |
| 1949 | 23 days |
| 1950 | 31 days |
| 1951 | 16 days |
| 1952 | 46 days |
| 1953 | 24 days |
| 1954 | 23 days |
| 1955 | 26 days |
| 1956 | 38 days |
| 1957 | 29 days |
| 1958 | 36 days |
| 1959 | 21 days |
| 1960 | 18 days |
| 1961 | 16 days |
| 1962 | 21 days |
| 1963 | 34 days |
| 1964 | 39 days |
| 1965 | 20 days |
| 1966 | 26 days |
| 1967 | 29 days |
| 1968 | 16 days |
| 1969 | 22 days |
| 1970 | 20 days |
| 1971 | 32 days |
| 1972 | 19 days |
| 1973 | 13 days |
| 1974 | 22 days |
| 1975 | 24 days |
| 1976 | 34 days |
| 1977 | 15 days |
| 1978 | 19 days |
| 1979 | 18 days |
| 1980 | 25 days |
| 1981 | 24 days |
| 1982 | 21 days |
| 1983 | 22 days |
| 1984 | 16 days |
| 1985 | 19 days |
| 1986 | 29 days |
| 1987 | 22 days |
| 1988 | 37 days |
| 1989 | 40 days |
| 1990 | 15 days |
| 1991 | 23 days |
| 1992 | 18 days |
| 1993 | 24 days |
| 1994 | 30 days |
| 1995 | 23 days |
| 1996 | 26 days |
| 1997 | 14 days |
| 1998 | 23 days |
| 1999 | 37 days |
| 2000 | 27 days |
| 2001 | 24 days |
| 2002 | 41 days |
| 2003 | 22 days |
| 2004 | 18 days |
| 2005 | 17 days |
| 2006 | 24 days |
| 2007 | 30 days |
| 2008 | 21 days |
| 2009 | 24 days |
| 2010 | 29 days |
| 2011 | 15 days |
| 2012 | 13 days |
| 2013 | 6 days |
| 2014 | 17 days |
| 2015 | 19 days |
| 2016 | 20 days |
| 2017 | 6 days |
| 2018 | 6 days |
| 2019 | 5 days |
| 2020 | 4 days |
| 2021 | 4 days |
| 2022 | 5 days |
| 2023 | 4 days |
| 2024 | 5 days |
| 2025 | 4 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
110 years with a frostAcross 110 years with a frost, the median last spring frost at Oskaloosa falls on 25 April and the median first autumn frost on 8 October, which leaves a median of 166 days between them.
In 1982 to 2022 the median growing season was 172 days. That is 11 days more than in 1893 to 1925.
Fitted over all years, the growing season changes by +0.9 days per decade at this station.
| Measure | Median, all years | Earliest period (1893 to 1925) | Recent period (1982 to 2022) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 25 April | 27 April | 23 April | 4 days earlier | -0.5 days per decade |
| First autumn frost | 8 October | 4 October | 9 October | 5 days later | +0.5 days per decade |
| Growing days | 166 days | 161 days | 172 days | 11 days more | +0.9 days per decade |
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
62 years, 1949 to 2016A day with at least 63.7 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 178.3 mm (7.0 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 63.7 mm (2.5 in) | |
| 5 years | 88.1 mm (3.5 in) | |
| 10 years | 106.6 mm (4.2 in) | |
| 25 years | 132.7 mm (5.2 in) | |
| 50 years | 154.5 mm (6.1 in) | |
| 100 years | 178.3 mm (7.0 in) | Longer than the 62 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, 62 years of values from 1949 to 2016.
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: 165.4 mm (6.5 in) in 2000; 141.0 mm (5.6 in) in 1961; 136.1 mm (5.4 in) in 1970.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2025-12-31).