Grinnell 3 SW Weather Records (USC00133473)
Record envelope, standing records and threshold days for Grinnell 3 SW (USC00133473), Iowa, United States, with 134 years of record.
Key Facts for Grinnell 3 SW
- Grinnell 3 SW (USC00133473) is a weather station in Iowa, United States at 41.72 latitude and -92.75 longitude, 279 m (915 ft) above sea level.
- The station reports from 1893 to 2026, 134 years of record.
- 1,464 records set at Grinnell 3 SW still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Grinnell 3 SW set a daily record high maximum temperature of 31.1 C (88.0 F) on 12 October 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Iowa, United States, 41.72 latitude, -92.75 longitude.
- Elevation: 279 m (915 ft).
- Period of record: 1893 to 2026, 134 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
10 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 17.8 C (64.0 F) | -36.7 C (-34.1 F) | 14.4 C (57.9 F) | -25.6 C (-14.1 F) |
| Feb | 25.0 C (77.0 F) | -37.2 C (-35.0 F) | 20.6 C (69.1 F) | -16.1 C (3.0 F) |
| Mar | 32.2 C (90.0 F) | -27.2 C (-17.0 F) | 32.2 C (90.0 F) | -19.4 C (-2.9 F) |
| Apr | 33.3 C (91.9 F) | -17.2 C (1.0 F) | 30.0 C (86.0 F) | -3.9 C (25.0 F) |
| May | 36.7 C (98.1 F) | -7.2 C (19.0 F) | 31.7 C (89.1 F) | -2.2 C (28.0 F) |
| Jun | 38.9 C (102.0 F) | 1.7 C (35.1 F) | 33.3 C (91.9 F) | 7.2 C (45.0 F) |
| Jul | 41.1 C (106.0 F) | 4.4 C (39.9 F) | 36.1 C (97.0 F) | 10.6 C (51.1 F) |
| Aug | 41.7 C (107.1 F) | 2.2 C (36.0 F) | 32.8 C (91.0 F) | 10.6 C (51.1 F) |
| Sep | 38.3 C (100.9 F) | -6.1 C (21.0 F) | 35.0 C (95.0 F) | 8.9 C (48.0 F) |
| Oct | 35.0 C (95.0 F) | -16.7 C (1.9 F) | 31.1 C (88.0 F) | 4.4 C (39.9 F) |
| Nov | 27.8 C (82.0 F) | -26.1 C (-15.0 F) | n/a | n/a |
| Dec | 20.6 C (69.1 F) | -35.6 C (-32.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1893 | 15 |
| 1894 | 13 |
| 1895 | 21 |
| 1896 | 15 |
| 1897 | 15 |
| 1898 | 15 |
| 1899 | 18 |
| 1900 | 9 |
| 1901 | 7 |
| 1902 | 4 |
| 1903 | 4 |
| 1904 | 5 |
| 1905 | 13 |
| 1906 | 7 |
| 1907 | 15 |
| 1908 | 6 |
| 1909 | 22 |
| 1910 | 21 |
| 1911 | 19 |
| 1912 | 15 |
| 1913 | 24 |
| 1914 | 18 |
| 1915 | 12 |
| 1916 | 17 |
| 1917 | 9 |
| 1918 | 22 |
| 1919 | 10 |
| 1920 | 7 |
| 1921 | 7 |
| 1922 | 5 |
| 1923 | 10 |
| 1924 | 11 |
| 1925 | 22 |
| 1926 | 10 |
| 1927 | 20 |
| 1928 | 15 |
| 1929 | 10 |
| 1930 | 34 |
| 1931 | 26 |
| 1932 | 11 |
| 1948 | 8 |
| 1949 | 6 |
| 1950 | 20 |
| 1951 | 14 |
| 1952 | 7 |
| 1953 | 13 |
| 1954 | 10 |
| 1955 | 10 |
| 1956 | 10 |
| 1957 | 7 |
| 1958 | 8 |
| 1959 | 16 |
| 1960 | 6 |
| 1961 | 6 |
| 1962 | 9 |
| 1963 | 16 |
| 1964 | 9 |
| 1965 | 21 |
| 1966 | 18 |
| 1967 | 13 |
| 1968 | 5 |
| 1969 | 12 |
| 1970 | 13 |
| 1971 | 9 |
| 1972 | 16 |
| 1973 | 11 |
| 1974 | 20 |
| 1975 | 10 |
| 1976 | 19 |
| 1977 | 8 |
| 1978 | 7 |
| 1979 | 14 |
| 1980 | 11 |
| 1981 | 10 |
| 1982 | 10 |
| 1983 | 27 |
| 1984 | 11 |
| 1985 | 15 |
| 1986 | 16 |
| 1987 | 10 |
| 1988 | 19 |
| 1989 | 14 |
| 1990 | 12 |
| 1991 | 21 |
| 1992 | 13 |
| 1993 | 12 |
| 1994 | 8 |
| 1995 | 3 |
| 1996 | 20 |
| 1997 | 9 |
| 1998 | 18 |
| 1999 | 10 |
| 2000 | 18 |
| 2001 | 11 |
| 2002 | 9 |
| 2003 | 6 |
| 2004 | 14 |
| 2005 | 13 |
| 2006 | 12 |
| 2007 | 8 |
| 2008 | 5 |
| 2009 | 6 |
| 2010 | 4 |
| 2011 | 7 |
| 2012 | 30 |
| 2013 | 7 |
| 2014 | 16 |
| 2015 | 9 |
| 2016 | 3 |
| 2017 | 8 |
| 2018 | 16 |
| 2019 | 7 |
| 2022 | 10 |
| 2023 | 11 |
| 2024 | 15 |
| 2025 | 7 |
| 2026 | 13 |
All-Time Record Progression
12 new records| Date | Kind | Detail |
|---|---|---|
| 1950-02-13 | Record daily snowfall | Record daily snowfall 20.3 cm (8.0 in) |
| 1951-03-12 | Record daily snowfall | Record daily snowfall 25.4 cm (10.0 in) |
| 1959-03-06 | Record daily snowfall | Record daily snowfall 30.5 cm (12.0 in) |
| 1960-03-09 | Record snow depth | Record snow depth 61.0 cm (24.0 in) |
| 1960-03-11 | Record snow depth | Record snow depth 63.5 cm (25.0 in) |
| 1960-03-16 | Record snow depth | Record snow depth 73.7 cm (29.0 in) |
| 1960-03-17 | Record snow depth | Record snow depth 76.2 cm (30.0 in) |
| 1970-08-05 | Record daily precipitation | Record daily precipitation 175.8 mm (6.9 in) |
| 1974-01-12 | Record low minimum temperature | Record low minimum temperature -35.6 C (-32.1 F) |
| 1974-01-13 | Record low minimum temperature | Record low minimum temperature -36.7 C (-34.1 F) |
| 1996-02-03 | Record low maximum temperature | Record low maximum temperature -25.0 C (-13.0 F) |
| 1996-02-03 | Record low minimum temperature | Record low minimum temperature -37.2 C (-35.0 F) |
Wettest Day of Each Month
Aug: 175.8 mm (6.9 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 54.4 mm (2.1 in) | 4 January 1971 |
| Feb | 63.5 mm (2.5 in) | 25 February 2007 |
| Mar | 56.9 mm (2.2 in) | 31 March 1993 |
| Apr | 105.9 mm (4.2 in) | 13 April 1991 |
| May | 171.2 mm (6.7 in) | 26 May 2013 |
| Jun | 99.8 mm (3.9 in) | 10 June 1967 |
| Jul | 97.0 mm (3.8 in) | 1 July 2014 |
| Aug | 175.8 mm (6.9 in) | 5 August 1970 |
| Sep | 140.2 mm (5.5 in) | 30 September 1919 |
| Oct | 114.3 mm (4.5 in) | 2 October 2019 |
| Nov | 85.1 mm (3.4 in) | 18 November 1958 |
| Dec | 59.7 mm (2.4 in) | 14 December 2015 |
Period of Record Coverage
1893 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1893 | 255 | 70% | No |
| 1894 | 206 | 56% | No |
| 1895 | 252 | 69% | No |
| 1896 | 242 | 66% | No |
| 1897 | 256 | 70% | No |
| 1898 | 302 | 83% | No |
| 1899 | 271 | 74% | No |
| 1900 | 269 | 74% | No |
| 1901 | 268 | 73% | No |
| 1902 | 254 | 70% | No |
| 1903 | 259 | 71% | No |
| 1904 | 242 | 66% | No |
| 1905 | 363 | 99% | Yes |
| 1906 | 365 | 100% | Yes |
| 1907 | 364 | 100% | Yes |
| 1908 | 365 | 100% | Yes |
| 1909 | 363 | 99% | Yes |
| 1910 | 364 | 100% | Yes |
| 1911 | 365 | 100% | Yes |
| 1912 | 366 | 100% | Yes |
| 1913 | 365 | 100% | Yes |
| 1914 | 364 | 100% | Yes |
| 1915 | 364 | 100% | Yes |
| 1916 | 365 | 100% | Yes |
| 1917 | 364 | 100% | Yes |
| 1918 | 365 | 100% | Yes |
| 1919 | 302 | 83% | No |
| 1920 | 339 | 93% | Yes |
| 1921 | 312 | 85% | No |
| 1922 | 361 | 99% | Yes |
| 1923 | 362 | 99% | Yes |
| 1924 | 365 | 100% | Yes |
| 1925 | 365 | 100% | Yes |
| 1926 | 365 | 100% | Yes |
| 1927 | 360 | 99% | Yes |
| 1928 | 362 | 99% | Yes |
| 1929 | 332 | 91% | Yes |
| 1930 | 364 | 100% | Yes |
| 1931 | 334 | 92% | Yes |
| 1932 | 366 | 100% | Yes |
| 1948 | 275 | 75% | No |
| 1949 | 363 | 99% | Yes |
| 1950 | 362 | 99% | Yes |
| 1951 | 364 | 100% | Yes |
| 1952 | 364 | 99% | Yes |
| 1953 | 364 | 100% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 363 | 99% | Yes |
| 1956 | 365 | 100% | Yes |
| 1957 | 364 | 100% | Yes |
| 1958 | 362 | 99% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 361 | 99% | Yes |
| 1963 | 363 | 99% | Yes |
| 1964 | 365 | 100% | Yes |
| 1965 | 364 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 357 | 98% | Yes |
| 1968 | 305 | 83% | No |
| 1969 | 365 | 100% | Yes |
| 1970 | 363 | 99% | 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 | 365 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 364 | 100% | Yes |
| 1982 | 364 | 100% | Yes |
| 1983 | 364 | 100% | Yes |
| 1984 | 364 | 99% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 364 | 100% | Yes |
| 1987 | 365 | 100% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 364 | 100% | Yes |
| 1991 | 364 | 100% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 365 | 100% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 364 | 100% | Yes |
| 1996 | 365 | 100% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 363 | 99% | Yes |
| 1999 | 365 | 100% | Yes |
| 2000 | 365 | 100% | Yes |
| 2001 | 364 | 100% | Yes |
| 2002 | 363 | 99% | Yes |
| 2003 | 363 | 99% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 362 | 99% | Yes |
| 2009 | 363 | 99% | Yes |
| 2010 | 362 | 99% | Yes |
| 2011 | 356 | 98% | Yes |
| 2012 | 364 | 99% | Yes |
| 2013 | 359 | 98% | Yes |
| 2014 | 359 | 98% | Yes |
| 2015 | 364 | 100% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 363 | 99% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 315 | 86% | No |
| 2022 | 247 | 68% | No |
| 2023 | 364 | 100% | Yes |
| 2024 | 365 | 100% | Yes |
| 2025 | 363 | 99% | Yes |
| 2026 | 285 | 78% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 12 October 2026 | Grinnell 3 SW, US | daily high max (Provisional) | 31.1 C (88.0 F) | 0.5 C (0.9 F) | 1 year | 10 of 100 (Routine) |
| 20 September 2026 | Grinnell 3 SW, US | daily rain (Provisional) | 49.8 mm (2.0 in) | 2.8 mm (0.11 in) | 48 years | 25 of 100 (Routine) |
| 9 September 2026 | Grinnell 3 SW, US | daily rain (Provisional) | 47.2 mm (1.9 in) | 11.4 mm (0.4 in) | 36 years | 28 of 100 (Routine) |
| 4 September 2026 | Grinnell 3 SW, US | daily high min (Tie, Provisional) | 21.7 C (71.1 F) | tie | 113 years | 10 of 100 (Routine) |
| 31 August 2026 | Grinnell 3 SW, US | daily high min (Provisional) | 23.9 C (75.0 F) | 2.2 C (4.0 F) | 25 years | 22 of 100 (Routine) |
| 12 August 2026 | Grinnell 3 SW, US | daily high min | 22.2 C (72.0 F) | 0.5 C (0.9 F) | 108 years | 41 of 100 (Notable) |
| 3 July 2026 | Grinnell 3 SW, US | daily rain | 57.2 mm (2.3 in) | 28.0 mm (1.1 in) | 75 years | 51 of 100 (Notable) |
| 2 July 2026 | Grinnell 3 SW, US | daily high min (Tie) | 23.9 C (75.0 F) | tie | 115 years | 10 of 100 (Routine) |
| 1 July 2026 | Grinnell 3 SW, US | daily high min | 24.4 C (75.9 F) | 0.5 C (0.9 F) | 69 years | 31 of 100 (Routine) |
| 30 June 2026 | Grinnell 3 SW, US | monthly high min (Tie) | 24.4 C (75.9 F) | tie | 38 years | 7 of 100 (Routine) |
| 29 June 2026 | Grinnell 3 SW, US | daily high min (Tie) | 23.3 C (73.9 F) | tie | 112 years | 10 of 100 (Routine) |
| 22 June 2026 | Grinnell 3 SW, US | daily low max | 17.2 C (63.0 F) | 2.2 C (4.0 F) | 75 years | 37 of 100 (Notable) |
| 10 June 2026 | Grinnell 3 SW, US | daily high min | 22.8 C (73.0 F) | 1.1 C (2.0 F) | 115 years | 42 of 100 (Notable) |
| 14 April 2026 | Grinnell 3 SW, US | daily high min | 17.2 C (63.0 F) | 3.9 C (7.0 F) | 48 years | 31 of 100 (Routine) |
| 13 April 2026 | Grinnell 3 SW, US | daily high min (Tie) | 14.4 C (57.9 F) | tie | 126 years | 10 of 100 (Routine) |
| 3 April 2026 | Grinnell 3 SW, US | daily rain | 15.7 mm (0.6 in) | 0.7 mm (0.03 in) | 40 years | 20 of 100 (Routine) |
| 31 March 2026 | Grinnell 3 SW, US | daily high max | 30.6 C (87.1 F) | 3.4 C (6.1 F) | 59 years | 31 of 100 (Routine) |
| 22 March 2026 | Grinnell 3 SW, US | monthly high max (Tie) | 32.2 C (90.0 F) | tie | 115 years | 12 of 100 (Routine) |
| 18 March 2026 | Grinnell 3 SW, US | daily low min | -19.4 C (-2.9 F) | 1.1 C (2.0 F) | 103 years | 41 of 100 (Notable) |
| 17 March 2026 | Grinnell 3 SW, US | daily low min (Tie) | -18.9 C (-2.0 F) | tie | 120 years | 10 of 100 (Routine) |
Climate Trend
96 complete years, 1905 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1905 | 8.6 C | -0.33 C |
| 1906 | 9.1 C | +0.14 C |
| 1907 | 9.2 C | +0.26 C |
| 1908 | 10.2 C | +1.28 C |
| 1909 | 9.4 C | +0.50 C |
| 1910 | 10.6 C | +1.66 C |
| 1911 | 10.4 C | +1.48 C |
| 1912 | 8.7 C | -0.24 C |
| 1913 | 10.7 C | +1.75 C |
| 1914 | 10.2 C | +1.31 C |
| 1915 | 9.5 C | +0.61 C |
| 1917 | 8.1 C | -0.88 C |
| 1918 | 10.2 C | +1.28 C |
| 1920 | 8.8 C | -0.15 C |
| 1921 | 11.0 C | +2.02 C |
| 1922 | 10.8 C | +1.87 C |
| 1923 | 10.1 C | +1.20 C |
| 1924 | 8.7 C | -0.23 C |
| 1925 | 10.1 C | +1.20 C |
| 1926 | 10.1 C | +1.18 C |
| 1927 | 10.7 C | +1.72 C |
| 1928 | 9.6 C | +0.69 C |
| 1930 | 10.3 C | +1.34 C |
| 1932 | 9.5 C | +0.61 C |
| 1949 | 9.6 C | +0.63 C |
| 1950 | 8.0 C | -0.90 C |
| 1951 | 7.5 C | -1.39 C |
| 1952 | 9.8 C | +0.88 C |
| 1953 | 10.6 C | +1.69 C |
| 1954 | 10.6 C | +1.66 C |
| 1955 | 9.9 C | +0.97 C |
| 1956 | 10.0 C | +1.07 C |
| 1957 | 9.7 C | +0.72 C |
| 1958 | 9.3 C | +0.38 C |
| 1959 | 9.3 C | +0.35 C |
| 1960 | 8.8 C | -0.13 C |
| 1961 | 9.2 C | +0.30 C |
| 1962 | 8.8 C | -0.13 C |
| 1963 | 9.4 C | +0.47 C |
| 1964 | 9.4 C | +0.50 C |
| 1965 | 7.8 C | -1.12 C |
| 1966 | 7.4 C | -1.50 C |
| 1967 | 7.7 C | -1.27 C |
| 1969 | 7.5 C | -1.48 C |
| 1970 | 7.9 C | -1.00 C |
| 1971 | 8.0 C | -0.91 C |
| 1972 | 7.0 C | -1.98 C |
| 1973 | 8.9 C | -0.07 C |
| 1974 | 8.0 C | -0.95 C |
| 1975 | 8.2 C | -0.74 C |
| 1976 | 7.7 C | -1.28 C |
| 1977 | 8.6 C | -0.31 C |
| 1978 | 6.9 C | -2.08 C |
| 1979 | 6.7 C | -2.27 C |
| 1980 | 8.2 C | -0.74 C |
| 1981 | 8.9 C | +0.01 C |
| 1982 | 7.5 C | -1.42 C |
| 1983 | 8.5 C | -0.43 C |
| 1984 | 8.4 C | -0.55 C |
| 1985 | 7.2 C | -1.71 C |
| 1986 | 8.6 C | -0.32 C |
| 1987 | 10.4 C | +1.43 C |
| 1988 | 9.1 C | +0.12 C |
| 1989 | 7.5 C | -1.39 C |
| 1990 | 9.3 C | +0.36 C |
| 1991 | 8.8 C | -0.10 C |
| 1992 | 8.3 C | -0.61 C |
| 1993 | 7.4 C | -1.49 C |
| 1994 | 8.0 C | -0.89 C |
| 1995 | 8.0 C | -0.96 C |
| 1996 | 6.9 C | -2.03 C |
| 1997 | 7.9 C | -1.03 C |
| 1998 | 9.9 C | +0.96 C |
| 1999 | 9.1 C | +0.16 C |
| 2000 | 8.8 C | -0.18 C |
| 2001 | 8.8 C | -0.14 C |
| 2002 | 9.0 C | +0.11 C |
| 2003 | 8.2 C | -0.73 C |
| 2004 | 8.6 C | -0.31 C |
| 2005 | 9.2 C | +0.26 C |
| 2006 | 9.8 C | +0.83 C |
| 2007 | 9.0 C | +0.09 C |
| 2008 | 7.3 C | -1.68 C |
| 2009 | 7.8 C | -1.17 C |
| 2010 | 8.6 C | -0.31 C |
| 2011 | 8.8 C | -0.11 C |
| 2012 | 10.4 C | +1.49 C |
| 2013 | 7.7 C | -1.26 C |
| 2014 | 6.9 C | -1.99 C |
| 2015 | 9.0 C | +0.02 C |
| 2016 | 9.9 C | +0.95 C |
| 2017 | 9.4 C | +0.50 C |
| 2018 | 8.4 C | -0.53 C |
| 2023 | 10.3 C | +1.35 C |
| 2024 | 10.8 C | +1.86 C |
| 2025 | 9.8 C | +0.89 C |
The annual mean temperature here has fallen by 0.1 C (0.1 to 0.2) per decade over 1905 to 2025. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 96 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.1 C (-0.2 to -0.1) per decade | -0.2 F (-0.3 to -0.1) per decade | 1905 to 2025 | 96 | Fall |
| Mean daily maximum | -0.1 C (-0.2 to 0.0) per decade | -0.2 F (-0.3 to -0.1) per decade | 1905 to 2025 | 96 | Fall |
| Mean daily minimum | -0.11 C (-0.17 to -0.05) per decade | -0.2 F (-0.3 to -0.1) per decade | 1905 to 2025 | 96 | Fall |
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) | 41.7 C (107.1 F) | 1918 | 35.6 C (96.1 F) | 117 |
| Coldest night (TNn) | -37.2 C (-35.0 F) | 1996 | -27.2 C (-17.0 F) | 117 |
| Wettest day (Rx1day) | 175.8 mm (6.9 in) | 1970 | 59.9 mm (2.4 in) | 117 |
| Wettest five days (Rx5day) | 253.8 mm (10.0 in) | 2013 | 86.1 mm (3.4 in) | 117 |
| Longest dry spell (CDD) | 56 days | 1952 | 22 days | 117 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1893 | 32.2 C (90.0 F) |
| 1894 | 30.6 C (87.1 F) |
| 1895 | 32.2 C (90.0 F) |
| 1896 | 30.6 C (87.1 F) |
| 1897 | 35.6 C (96.1 F) |
| 1898 | 32.2 C (90.0 F) |
| 1899 | 35.6 C (96.1 F) |
| 1900 | 32.8 C (91.0 F) |
| 1901 | 33.3 C (91.9 F) |
| 1902 | 31.1 C (88.0 F) |
| 1903 | 27.2 C (81.0 F) |
| 1904 | 28.9 C (84.0 F) |
| 1905 | 35.0 C (95.0 F) |
| 1906 | 34.4 C (93.9 F) |
| 1907 | 33.9 C (93.0 F) |
| 1908 | 35.6 C (96.1 F) |
| 1909 | 38.3 C (100.9 F) |
| 1910 | 37.8 C (100.0 F) |
| 1911 | 41.1 C (106.0 F) |
| 1912 | 37.8 C (100.0 F) |
| 1913 | 40.6 C (105.1 F) |
| 1914 | 37.8 C (100.0 F) |
| 1915 | 35.0 C (95.0 F) |
| 1916 | 38.9 C (102.0 F) |
| 1917 | 38.9 C (102.0 F) |
| 1918 | 41.7 C (107.1 F) |
| 1919 | 38.3 C (100.9 F) |
| 1920 | 34.4 C (93.9 F) |
| 1921 | 35.0 C (95.0 F) |
| 1922 | 36.7 C (98.1 F) |
| 1923 | 36.1 C (97.0 F) |
| 1924 | 35.6 C (96.1 F) |
| 1925 | 40.0 C (104.0 F) |
| 1926 | 37.2 C (99.0 F) |
| 1927 | 37.8 C (100.0 F) |
| 1928 | 34.4 C (93.9 F) |
| 1929 | 35.0 C (95.0 F) |
| 1930 | 41.7 C (107.1 F) |
| 1931 | 38.9 C (102.0 F) |
| 1932 | 36.1 C (97.0 F) |
| 1948 | 39.4 C (102.9 F) |
| 1949 | 35.0 C (95.0 F) |
| 1950 | 32.8 C (91.0 F) |
| 1951 | 35.0 C (95.0 F) |
| 1952 | 36.7 C (98.1 F) |
| 1953 | 37.2 C (99.0 F) |
| 1954 | 37.8 C (100.0 F) |
| 1955 | 40.0 C (104.0 F) |
| 1956 | 39.4 C (102.9 F) |
| 1957 | 37.2 C (99.0 F) |
| 1958 | 34.4 C (93.9 F) |
| 1959 | 34.4 C (93.9 F) |
| 1960 | 35.6 C (96.1 F) |
| 1961 | 34.4 C (93.9 F) |
| 1962 | 33.9 C (93.0 F) |
| 1963 | 36.7 C (98.1 F) |
| 1964 | 36.7 C (98.1 F) |
| 1965 | 35.6 C (96.1 F) |
| 1966 | 36.1 C (97.0 F) |
| 1967 | 33.9 C (93.0 F) |
| 1968 | 35.6 C (96.1 F) |
| 1969 | 33.3 C (91.9 F) |
| 1970 | 36.1 C (97.0 F) |
| 1971 | 34.4 C (93.9 F) |
| 1972 | 33.9 C (93.0 F) |
| 1973 | 33.3 C (91.9 F) |
| 1974 | 36.7 C (98.1 F) |
| 1975 | 35.0 C (95.0 F) |
| 1976 | 33.9 C (93.0 F) |
| 1977 | 37.8 C (100.0 F) |
| 1978 | 35.0 C (95.0 F) |
| 1979 | 35.0 C (95.0 F) |
| 1980 | 38.9 C (102.0 F) |
| 1981 | 34.4 C (93.9 F) |
| 1982 | 34.4 C (93.9 F) |
| 1983 | 39.4 C (102.9 F) |
| 1984 | 35.6 C (96.1 F) |
| 1985 | 36.7 C (98.1 F) |
| 1986 | 33.9 C (93.0 F) |
| 1987 | 37.2 C (99.0 F) |
| 1988 | 38.9 C (102.0 F) |
| 1989 | 37.2 C (99.0 F) |
| 1990 | 35.6 C (96.1 F) |
| 1991 | 35.0 C (95.0 F) |
| 1992 | 32.2 C (90.0 F) |
| 1993 | 32.2 C (90.0 F) |
| 1994 | 33.9 C (93.0 F) |
| 1995 | 37.2 C (99.0 F) |
| 1996 | 33.9 C (93.0 F) |
| 1997 | 35.0 C (95.0 F) |
| 1998 | 34.4 C (93.9 F) |
| 1999 | 37.2 C (99.0 F) |
| 2000 | 35.6 C (96.1 F) |
| 2001 | 35.6 C (96.1 F) |
| 2002 | 35.0 C (95.0 F) |
| 2003 | 36.1 C (97.0 F) |
| 2004 | 31.7 C (89.1 F) |
| 2005 | 35.0 C (95.0 F) |
| 2006 | 37.2 C (99.0 F) |
| 2007 | 33.3 C (91.9 F) |
| 2008 | 32.8 C (91.0 F) |
| 2009 | 33.3 C (91.9 F) |
| 2010 | 33.3 C (91.9 F) |
| 2011 | 35.6 C (96.1 F) |
| 2012 | 38.9 C (102.0 F) |
| 2013 | 37.2 C (99.0 F) |
| 2014 | 31.7 C (89.1 F) |
| 2015 | 32.8 C (91.0 F) |
| 2016 | 33.3 C (91.9 F) |
| 2017 | 33.9 C (93.0 F) |
| 2018 | 35.6 C (96.1 F) |
| 2019 | 36.1 C (97.0 F) |
| 2022 | 37.2 C (99.0 F) |
| 2023 | 36.7 C (98.1 F) |
| 2024 | 35.0 C (95.0 F) |
| 2025 | 35.6 C (96.1 F) |
| 2026 | 36.1 C (97.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1893 | -27.2 C (-17.0 F) |
| 1894 | -28.9 C (-20.0 F) |
| 1895 | -28.9 C (-20.0 F) |
| 1896 | -22.8 C (-9.0 F) |
| 1897 | -28.9 C (-20.0 F) |
| 1898 | -24.4 C (-11.9 F) |
| 1899 | -31.7 C (-25.1 F) |
| 1900 | -23.3 C (-9.9 F) |
| 1901 | -27.8 C (-18.0 F) |
| 1902 | -26.7 C (-16.1 F) |
| 1903 | -25.0 C (-13.0 F) |
| 1904 | -28.9 C (-20.0 F) |
| 1905 | -32.2 C (-26.0 F) |
| 1906 | -24.4 C (-11.9 F) |
| 1907 | -28.3 C (-18.9 F) |
| 1908 | -23.3 C (-9.9 F) |
| 1909 | -27.2 C (-17.0 F) |
| 1910 | -28.9 C (-20.0 F) |
| 1911 | -27.8 C (-18.0 F) |
| 1912 | -33.9 C (-29.0 F) |
| 1913 | -25.6 C (-14.1 F) |
| 1914 | -27.2 C (-17.0 F) |
| 1915 | -29.4 C (-20.9 F) |
| 1916 | -31.1 C (-24.0 F) |
| 1917 | -30.6 C (-23.1 F) |
| 1918 | -30.0 C (-22.0 F) |
| 1919 | -35.0 C (-31.0 F) |
| 1920 | -28.3 C (-18.9 F) |
| 1921 | -23.3 C (-9.9 F) |
| 1922 | -23.9 C (-11.0 F) |
| 1923 | -25.6 C (-14.1 F) |
| 1924 | -31.7 C (-25.1 F) |
| 1925 | -25.0 C (-13.0 F) |
| 1926 | -23.3 C (-9.9 F) |
| 1927 | -23.9 C (-11.0 F) |
| 1928 | -24.4 C (-11.9 F) |
| 1929 | -28.3 C (-18.9 F) |
| 1930 | -32.2 C (-26.0 F) |
| 1931 | -20.6 C (-5.1 F) |
| 1932 | -27.8 C (-18.0 F) |
| 1948 | -22.2 C (-8.0 F) |
| 1949 | -27.2 C (-17.0 F) |
| 1950 | -27.2 C (-17.0 F) |
| 1951 | -27.8 C (-18.0 F) |
| 1952 | -25.0 C (-13.0 F) |
| 1953 | -23.9 C (-11.0 F) |
| 1954 | -25.6 C (-14.1 F) |
| 1955 | -28.3 C (-18.9 F) |
| 1956 | -28.3 C (-18.9 F) |
| 1957 | -30.6 C (-23.1 F) |
| 1958 | -28.3 C (-18.9 F) |
| 1959 | -27.2 C (-17.0 F) |
| 1960 | -26.7 C (-16.1 F) |
| 1961 | -26.7 C (-16.1 F) |
| 1962 | -27.2 C (-17.0 F) |
| 1963 | -28.9 C (-20.0 F) |
| 1964 | -22.8 C (-9.0 F) |
| 1965 | -26.1 C (-15.0 F) |
| 1966 | -31.1 C (-24.0 F) |
| 1967 | -26.7 C (-16.1 F) |
| 1968 | -27.2 C (-17.0 F) |
| 1969 | -25.6 C (-14.1 F) |
| 1970 | -33.9 C (-29.0 F) |
| 1971 | -31.1 C (-24.0 F) |
| 1972 | -31.1 C (-24.0 F) |
| 1973 | -25.6 C (-14.1 F) |
| 1974 | -36.7 C (-34.1 F) |
| 1975 | -28.9 C (-20.0 F) |
| 1976 | -27.2 C (-17.0 F) |
| 1977 | -31.1 C (-24.0 F) |
| 1978 | -29.4 C (-20.9 F) |
| 1979 | -36.7 C (-34.1 F) |
| 1980 | -24.4 C (-11.9 F) |
| 1981 | -26.7 C (-16.1 F) |
| 1982 | -32.8 C (-27.0 F) |
| 1983 | -29.4 C (-20.9 F) |
| 1984 | -28.3 C (-18.9 F) |
| 1985 | -35.6 C (-32.1 F) |
| 1986 | -28.3 C (-18.9 F) |
| 1987 | -21.1 C (-6.0 F) |
| 1988 | -32.2 C (-26.0 F) |
| 1989 | -31.7 C (-25.1 F) |
| 1990 | -24.4 C (-11.9 F) |
| 1991 | -28.3 C (-18.9 F) |
| 1992 | -22.2 C (-8.0 F) |
| 1993 | -27.2 C (-17.0 F) |
| 1994 | -32.2 C (-26.0 F) |
| 1995 | -24.4 C (-11.9 F) |
| 1996 | -37.2 C (-35.0 F) |
| 1997 | -25.6 C (-14.1 F) |
| 1998 | -26.7 C (-16.1 F) |
| 1999 | -31.1 C (-24.0 F) |
| 2000 | -28.9 C (-20.0 F) |
| 2001 | -23.3 C (-9.9 F) |
| 2002 | -22.8 C (-9.0 F) |
| 2003 | -23.3 C (-9.9 F) |
| 2004 | -25.0 C (-13.0 F) |
| 2005 | -26.1 C (-15.0 F) |
| 2006 | -26.7 C (-16.1 F) |
| 2007 | -24.4 C (-11.9 F) |
| 2008 | -28.9 C (-20.0 F) |
| 2009 | -35.6 C (-32.1 F) |
| 2010 | -27.8 C (-18.0 F) |
| 2011 | -25.0 C (-13.0 F) |
| 2012 | -22.2 C (-8.0 F) |
| 2013 | -29.4 C (-20.9 F) |
| 2014 | -31.1 C (-24.0 F) |
| 2015 | -30.0 C (-22.0 F) |
| 2016 | -26.1 C (-15.0 F) |
| 2017 | -25.6 C (-14.1 F) |
| 2018 | -30.6 C (-23.1 F) |
| 2019 | -35.0 C (-31.0 F) |
| 2022 | -24.4 C (-11.9 F) |
| 2023 | -22.8 C (-9.0 F) |
| 2024 | -27.8 C (-18.0 F) |
| 2025 | -27.8 C (-18.0 F) |
| 2026 | -25.6 C (-14.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1893 | 30.5 mm (1.2 in) |
| 1894 | 24.1 mm (0.9 in) |
| 1895 | 43.2 mm (1.7 in) |
| 1896 | 36.1 mm (1.4 in) |
| 1897 | 15.5 mm (0.6 in) |
| 1898 | 54.4 mm (2.1 in) |
| 1899 | 72.4 mm (2.9 in) |
| 1900 | 61.0 mm (2.4 in) |
| 1901 | 30.0 mm (1.2 in) |
| 1902 | 30.7 mm (1.2 in) |
| 1903 | 31.8 mm (1.3 in) |
| 1904 | 38.1 mm (1.5 in) |
| 1905 | 57.9 mm (2.3 in) |
| 1906 | 70.1 mm (2.8 in) |
| 1907 | 68.8 mm (2.7 in) |
| 1908 | 106.2 mm (4.2 in) |
| 1909 | 48.3 mm (1.9 in) |
| 1910 | 40.4 mm (1.6 in) |
| 1911 | 38.4 mm (1.5 in) |
| 1912 | 39.6 mm (1.6 in) |
| 1913 | 49.3 mm (1.9 in) |
| 1914 | 79.8 mm (3.1 in) |
| 1915 | 59.2 mm (2.3 in) |
| 1916 | 50.8 mm (2.0 in) |
| 1917 | 34.5 mm (1.4 in) |
| 1918 | 101.6 mm (4.0 in) |
| 1919 | 140.2 mm (5.5 in) |
| 1920 | 49.3 mm (1.9 in) |
| 1921 | 77.2 mm (3.0 in) |
| 1922 | 50.3 mm (2.0 in) |
| 1923 | 50.8 mm (2.0 in) |
| 1924 | 32.3 mm (1.3 in) |
| 1925 | 59.2 mm (2.3 in) |
| 1926 | 57.4 mm (2.3 in) |
| 1927 | 30.2 mm (1.2 in) |
| 1928 | 33.0 mm (1.3 in) |
| 1929 | 29.7 mm (1.2 in) |
| 1930 | 36.8 mm (1.4 in) |
| 1931 | 57.9 mm (2.3 in) |
| 1932 | 43.9 mm (1.7 in) |
| 1948 | 74.9 mm (2.9 in) |
| 1949 | 65.0 mm (2.6 in) |
| 1950 | 87.6 mm (3.4 in) |
| 1951 | 58.4 mm (2.3 in) |
| 1952 | 63.2 mm (2.5 in) |
| 1953 | 33.3 mm (1.3 in) |
| 1954 | 58.4 mm (2.3 in) |
| 1955 | 33.8 mm (1.3 in) |
| 1956 | 71.4 mm (2.8 in) |
| 1957 | 76.5 mm (3.0 in) |
| 1958 | 85.1 mm (3.4 in) |
| 1959 | 86.1 mm (3.4 in) |
| 1960 | 51.1 mm (2.0 in) |
| 1961 | 102.9 mm (4.1 in) |
| 1962 | 62.7 mm (2.5 in) |
| 1963 | 50.8 mm (2.0 in) |
| 1964 | 66.0 mm (2.6 in) |
| 1965 | 95.8 mm (3.8 in) |
| 1966 | 75.4 mm (3.0 in) |
| 1967 | 99.8 mm (3.9 in) |
| 1968 | 39.4 mm (1.6 in) |
| 1969 | 91.2 mm (3.6 in) |
| 1970 | 175.8 mm (6.9 in) |
| 1971 | 66.3 mm (2.6 in) |
| 1972 | 61.2 mm (2.4 in) |
| 1973 | 63.0 mm (2.5 in) |
| 1974 | 81.0 mm (3.2 in) |
| 1975 | 68.6 mm (2.7 in) |
| 1976 | 62.5 mm (2.5 in) |
| 1977 | 72.4 mm (2.9 in) |
| 1978 | 91.7 mm (3.6 in) |
| 1979 | 75.4 mm (3.0 in) |
| 1980 | 50.5 mm (2.0 in) |
| 1981 | 84.8 mm (3.3 in) |
| 1982 | 56.6 mm (2.2 in) |
| 1983 | 58.7 mm (2.3 in) |
| 1984 | 54.4 mm (2.1 in) |
| 1985 | 38.6 mm (1.5 in) |
| 1986 | 54.1 mm (2.1 in) |
| 1987 | 55.4 mm (2.2 in) |
| 1988 | 62.5 mm (2.5 in) |
| 1989 | 54.1 mm (2.1 in) |
| 1990 | 89.4 mm (3.5 in) |
| 1991 | 105.9 mm (4.2 in) |
| 1992 | 62.5 mm (2.5 in) |
| 1993 | 72.4 mm (2.9 in) |
| 1994 | 42.7 mm (1.7 in) |
| 1995 | 37.1 mm (1.5 in) |
| 1996 | 81.0 mm (3.2 in) |
| 1997 | 82.6 mm (3.3 in) |
| 1998 | 47.5 mm (1.9 in) |
| 1999 | 59.4 mm (2.3 in) |
| 2000 | 34.8 mm (1.4 in) |
| 2001 | 48.3 mm (1.9 in) |
| 2002 | 75.2 mm (3.0 in) |
| 2003 | 60.2 mm (2.4 in) |
| 2004 | 50.8 mm (2.0 in) |
| 2005 | 52.1 mm (2.1 in) |
| 2006 | 41.7 mm (1.6 in) |
| 2007 | 73.7 mm (2.9 in) |
| 2008 | 63.5 mm (2.5 in) |
| 2009 | 106.2 mm (4.2 in) |
| 2010 | 71.1 mm (2.8 in) |
| 2011 | 76.2 mm (3.0 in) |
| 2012 | 54.4 mm (2.1 in) |
| 2013 | 171.2 mm (6.7 in) |
| 2014 | 97.0 mm (3.8 in) |
| 2015 | 91.4 mm (3.6 in) |
| 2016 | 72.4 mm (2.9 in) |
| 2017 | 63.0 mm (2.5 in) |
| 2018 | 115.3 mm (4.5 in) |
| 2019 | 114.3 mm (4.5 in) |
| 2022 | 59.9 mm (2.4 in) |
| 2023 | 40.1 mm (1.6 in) |
| 2024 | 84.8 mm (3.3 in) |
| 2025 | 54.6 mm (2.1 in) |
| 2026 | 62.2 mm (2.4 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1893 | 30.5 mm (1.2 in) |
| 1894 | 24.4 mm (1.0 in) |
| 1895 | 100.4 mm (4.0 in) |
| 1896 | 65.5 mm (2.6 in) |
| 1897 | 15.5 mm (0.6 in) |
| 1898 | 59.5 mm (2.3 in) |
| 1899 | 22.9 mm (0.9 in) |
| 1900 | 61.0 mm (2.4 in) |
| 1901 | 40.2 mm (1.6 in) |
| 1902 | 37.3 mm (1.5 in) |
| 1903 | 8.9 mm (0.35 in) |
| 1904 | 43.2 mm (1.7 in) |
| 1905 | 69.4 mm (2.7 in) |
| 1906 | 72.4 mm (2.9 in) |
| 1907 | 69.3 mm (2.7 in) |
| 1908 | 96.1 mm (3.8 in) |
| 1909 | 86.4 mm (3.4 in) |
| 1910 | 15.5 mm (0.6 in) |
| 1911 | 79.7 mm (3.1 in) |
| 1912 | 69.1 mm (2.7 in) |
| 1913 | 52.3 mm (2.1 in) |
| 1914 | 116.6 mm (4.6 in) |
| 1915 | 121.7 mm (4.8 in) |
| 1916 | 42.7 mm (1.7 in) |
| 1917 | 34.5 mm (1.4 in) |
| 1918 | 176.5 mm (6.9 in) |
| 1919 | 153.8 mm (6.1 in) |
| 1920 | 52.3 mm (2.1 in) |
| 1921 | 82.5 mm (3.2 in) |
| 1922 | 57.9 mm (2.3 in) |
| 1923 | 54.7 mm (2.2 in) |
| 1924 | 37.3 mm (1.5 in) |
| 1925 | 33.5 mm (1.3 in) |
| 1926 | 82.1 mm (3.2 in) |
| 1927 | 34.3 mm (1.4 in) |
| 1928 | 37.5 mm (1.5 in) |
| 1929 | 44.2 mm (1.7 in) |
| 1930 | 52.6 mm (2.1 in) |
| 1931 | 109.7 mm (4.3 in) |
| 1932 | 43.9 mm (1.7 in) |
| 1948 | 84.0 mm (3.3 in) |
| 1949 | 84.5 mm (3.3 in) |
| 1950 | 118.9 mm (4.7 in) |
| 1951 | 62.2 mm (2.4 in) |
| 1952 | 77.7 mm (3.1 in) |
| 1953 | 66.3 mm (2.6 in) |
| 1954 | 99.6 mm (3.9 in) |
| 1955 | 62.9 mm (2.5 in) |
| 1956 | 82.9 mm (3.3 in) |
| 1957 | 102.1 mm (4.0 in) |
| 1958 | 101.4 mm (4.0 in) |
| 1959 | 133.1 mm (5.2 in) |
| 1960 | 117.1 mm (4.6 in) |
| 1961 | 162.4 mm (6.4 in) |
| 1962 | 72.8 mm (2.9 in) |
| 1963 | 59.7 mm (2.4 in) |
| 1964 | 97.4 mm (3.8 in) |
| 1965 | 113.7 mm (4.5 in) |
| 1966 | 153.8 mm (6.1 in) |
| 1967 | 138.6 mm (5.5 in) |
| 1968 | 59.2 mm (2.3 in) |
| 1969 | 106.2 mm (4.2 in) |
| 1970 | 195.9 mm (7.7 in) |
| 1971 | 98.1 mm (3.9 in) |
| 1972 | 100.8 mm (4.0 in) |
| 1973 | 93.2 mm (3.7 in) |
| 1974 | 150.1 mm (5.9 in) |
| 1975 | 84.9 mm (3.3 in) |
| 1976 | 90.7 mm (3.6 in) |
| 1977 | 92.0 mm (3.6 in) |
| 1978 | 140.3 mm (5.5 in) |
| 1979 | 183.8 mm (7.2 in) |
| 1980 | 68.6 mm (2.7 in) |
| 1981 | 86.1 mm (3.4 in) |
| 1982 | 132.3 mm (5.2 in) |
| 1983 | 123.9 mm (4.9 in) |
| 1984 | 76.0 mm (3.0 in) |
| 1985 | 75.2 mm (3.0 in) |
| 1986 | 111.8 mm (4.4 in) |
| 1987 | 99.4 mm (3.9 in) |
| 1988 | 69.6 mm (2.7 in) |
| 1989 | 88.6 mm (3.5 in) |
| 1990 | 125.5 mm (4.9 in) |
| 1991 | 123.7 mm (4.9 in) |
| 1992 | 95.5 mm (3.8 in) |
| 1993 | 143.6 mm (5.7 in) |
| 1994 | 58.2 mm (2.3 in) |
| 1995 | 77.7 mm (3.1 in) |
| 1996 | 157.0 mm (6.2 in) |
| 1997 | 109.5 mm (4.3 in) |
| 1998 | 70.2 mm (2.8 in) |
| 1999 | 102.3 mm (4.0 in) |
| 2000 | 72.7 mm (2.9 in) |
| 2001 | 61.8 mm (2.4 in) |
| 2002 | 121.5 mm (4.8 in) |
| 2003 | 129.4 mm (5.1 in) |
| 2004 | 74.5 mm (2.9 in) |
| 2005 | 96.2 mm (3.8 in) |
| 2006 | 60.6 mm (2.4 in) |
| 2007 | 105.2 mm (4.1 in) |
| 2008 | 116.8 mm (4.6 in) |
| 2009 | 121.5 mm (4.8 in) |
| 2010 | 138.6 mm (5.5 in) |
| 2011 | 99.1 mm (3.9 in) |
| 2012 | 68.9 mm (2.7 in) |
| 2013 | 253.8 mm (10.0 in) |
| 2014 | 190.2 mm (7.5 in) |
| 2015 | 126.8 mm (5.0 in) |
| 2016 | 82.1 mm (3.2 in) |
| 2017 | 70.4 mm (2.8 in) |
| 2018 | 220.8 mm (8.7 in) |
| 2019 | 174.3 mm (6.9 in) |
| 2022 | 66.0 mm (2.6 in) |
| 2023 | 87.9 mm (3.5 in) |
| 2024 | 152.4 mm (6.0 in) |
| 2025 | 97.8 mm (3.9 in) |
| 2026 | 119.4 mm (4.7 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1893 | 24 days |
| 1894 | 20 days |
| 1895 | 23 days |
| 1896 | 25 days |
| 1897 | 22 days |
| 1898 | 28 days |
| 1899 | 17 days |
| 1900 | 20 days |
| 1901 | 19 days |
| 1902 | 18 days |
| 1903 | 21 days |
| 1904 | 30 days |
| 1905 | 17 days |
| 1906 | 26 days |
| 1907 | 24 days |
| 1908 | 24 days |
| 1909 | 16 days |
| 1910 | 32 days |
| 1911 | 14 days |
| 1912 | 16 days |
| 1913 | 27 days |
| 1914 | 22 days |
| 1915 | 20 days |
| 1916 | 16 days |
| 1917 | 29 days |
| 1918 | 31 days |
| 1919 | 28 days |
| 1920 | 14 days |
| 1921 | 18 days |
| 1922 | 18 days |
| 1923 | 18 days |
| 1924 | 16 days |
| 1925 | 23 days |
| 1926 | 19 days |
| 1927 | 21 days |
| 1928 | 26 days |
| 1929 | 18 days |
| 1930 | 18 days |
| 1931 | 25 days |
| 1932 | 20 days |
| 1948 | 22 days |
| 1949 | 23 days |
| 1950 | 29 days |
| 1951 | 17 days |
| 1952 | 56 days |
| 1953 | 28 days |
| 1954 | 27 days |
| 1955 | 16 days |
| 1956 | 23 days |
| 1957 | 27 days |
| 1958 | 29 days |
| 1959 | 26 days |
| 1960 | 18 days |
| 1961 | 23 days |
| 1962 | 26 days |
| 1963 | 33 days |
| 1964 | 25 days |
| 1965 | 20 days |
| 1966 | 25 days |
| 1967 | 20 days |
| 1968 | 18 days |
| 1969 | 32 days |
| 1970 | 20 days |
| 1971 | 23 days |
| 1972 | 13 days |
| 1973 | 18 days |
| 1974 | 24 days |
| 1975 | 29 days |
| 1976 | 33 days |
| 1977 | 17 days |
| 1978 | 19 days |
| 1979 | 18 days |
| 1980 | 28 days |
| 1981 | 25 days |
| 1982 | 17 days |
| 1983 | 20 days |
| 1984 | 20 days |
| 1985 | 20 days |
| 1986 | 22 days |
| 1987 | 41 days |
| 1988 | 43 days |
| 1989 | 23 days |
| 1990 | 19 days |
| 1991 | 32 days |
| 1992 | 21 days |
| 1993 | 24 days |
| 1994 | 23 days |
| 1995 | 23 days |
| 1996 | 19 days |
| 1997 | 18 days |
| 1998 | 23 days |
| 1999 | 37 days |
| 2000 | 20 days |
| 2001 | 14 days |
| 2002 | 50 days |
| 2003 | 19 days |
| 2004 | 18 days |
| 2005 | 24 days |
| 2006 | 21 days |
| 2007 | 27 days |
| 2008 | 14 days |
| 2009 | 24 days |
| 2010 | 26 days |
| 2011 | 22 days |
| 2012 | 21 days |
| 2013 | 18 days |
| 2014 | 17 days |
| 2015 | 23 days |
| 2016 | 20 days |
| 2017 | 25 days |
| 2018 | 23 days |
| 2019 | 16 days |
| 2022 | 22 days |
| 2023 | 26 days |
| 2024 | 21 days |
| 2025 | 19 days |
| 2026 | 33 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
96 years with a frostAcross 96 years with a frost, the median last spring frost at Grinnell 3 SW falls on 3 May and the median first autumn frost on 4 October, which leaves a median of 154 days between them.
In 1992 to 2025 the median growing season was 152 days. That is 4 days fewer than in 1905 to 1954.
Fitted over all years, the growing season changes by -0.7 days per decade at this station.
| Measure | Median, all years | Earliest period (1905 to 1954) | Recent period (1992 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 3 May | 1 May | 5 May | 4 days later | +0.3 days per decade |
| First autumn frost | 4 October | 5 October | 6 October | 1 day later | -0.4 days per decade |
| Growing days | 154 days | 156 days | 152 days | 4 days fewer | -0.7 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
72 years, 1949 to 2025A day with at least 65.8 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 153.8 mm (6.1 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 65.8 mm (2.6 in) | |
| 5 years | 87.3 mm (3.4 in) | |
| 10 years | 102.3 mm (4.0 in) | |
| 25 years | 122.3 mm (4.8 in) | |
| 50 years | 137.8 mm (5.4 in) | |
| 100 years | 153.8 mm (6.1 in) | Longer than the 72 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, 72 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: 175.8 mm (6.9 in) in 1970; 171.2 mm (6.7 in) in 2013; 115.3 mm (4.5 in) in 2018.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2007 to 2025 against 1961 to 1990Over 2007 to 2025, Grinnell 3 SW had a mean temperature of 8.9 C (48.1 F) and 1,046.8 mm (41.2 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Rockford Gtr Rockford AP (United States, 307 km away), Tipton (United States, 135 km away) and Lake Geneva Wwtp (United States, 370 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Rockford Gtr Rockford AP | United States | 307 km (191 mi) | 8.7 C (47.7 F) | 942.7 mm (37.1 in) | 0.66 |
| Tipton | United States | 135 km (84 mi) | 9.1 C (48.4 F) | 957.0 mm (37.7 in) | 0.66 |
| Lake Geneva Wwtp | United States | 370 km (230 mi) | 8.9 C (48.0 F) | 937.9 mm (36.9 in) | 0.69 |
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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-14).