Rock Rapids Weather Records (USC00137147)
Record envelope, standing records and threshold days for Rock Rapids (USC00137147), Iowa, United States, with 134 years of record.
Key Facts for Rock Rapids
- Rock Rapids (USC00137147) is a weather station in Iowa, United States at 43.43 latitude and -96.17 longitude, 411 m (1,347 ft) above sea level.
- The station reports from 1893 to 2026, 134 years of record.
- 1,464 records set at Rock Rapids still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Rock Rapids set a daily record precipitation of 63.2 mm (2.5 in) on 28 June 2026.
About the Station
- Location: Iowa, United States, 43.43 latitude, -96.17 longitude.
- Elevation: 411 m (1,347 ft).
- Period of record: 1893 to 2026, 134 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
7 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 20.0 C (68.0 F) | -40.0 C (-40.0 F) | 12.2 C (54.0 F) | -27.2 C (-17.0 F) |
| Feb | 21.1 C (70.0 F) | -40.0 C (-40.0 F) | 18.3 C (64.9 F) | -21.7 C (-7.1 F) |
| Mar | 32.2 C (90.0 F) | -30.6 C (-23.1 F) | 32.2 C (90.0 F) | -16.7 C (1.9 F) |
| Apr | 35.0 C (95.0 F) | -16.1 C (3.0 F) | 30.0 C (86.0 F) | -7.2 C (19.0 F) |
| May | 41.1 C (106.0 F) | -6.7 C (19.9 F) | 33.9 C (93.0 F) | -1.7 C (28.9 F) |
| Jun | 41.7 C (107.1 F) | 0.0 C (32.0 F) | 34.4 C (93.9 F) | 8.9 C (48.0 F) |
| Jul | 43.9 C (111.0 F) | 0.0 C (32.0 F) | 36.1 C (97.0 F) | 11.7 C (53.1 F) |
| Aug | 42.8 C (109.0 F) | 1.1 C (34.0 F) | 34.4 C (93.9 F) | 10.0 C (50.0 F) |
| Sep | 40.0 C (104.0 F) | -7.8 C (18.0 F) | 36.7 C (98.1 F) | 8.9 C (48.0 F) |
| Oct | 34.4 C (93.9 F) | -23.3 C (-9.9 F) | 29.4 C (84.9 F) | 4.4 C (39.9 F) |
| Nov | 26.7 C (80.1 F) | -28.9 C (-20.0 F) | n/a | n/a |
| Dec | 21.1 C (70.0 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 | 13 |
| 1894 | 23 |
| 1895 | 26 |
| 1896 | 26 |
| 1897 | 28 |
| 1898 | 2 |
| 1899 | 14 |
| 1904 | 6 |
| 1905 | 14 |
| 1906 | 6 |
| 1907 | 6 |
| 1908 | 2 |
| 1909 | 13 |
| 1910 | 10 |
| 1911 | 24 |
| 1912 | 16 |
| 1913 | 20 |
| 1914 | 15 |
| 1915 | 14 |
| 1916 | 10 |
| 1917 | 14 |
| 1918 | 16 |
| 1919 | 7 |
| 1920 | 9 |
| 1921 | 11 |
| 1922 | 11 |
| 1923 | 14 |
| 1924 | 16 |
| 1925 | 19 |
| 1926 | 15 |
| 1927 | 12 |
| 1928 | 12 |
| 1929 | 8 |
| 1930 | 9 |
| 1931 | 24 |
| 1932 | 6 |
| 1933 | 8 |
| 1934 | 28 |
| 1935 | 14 |
| 1936 | 38 |
| 1937 | 10 |
| 1938 | 6 |
| 1939 | 18 |
| 1940 | 9 |
| 1941 | 12 |
| 1942 | 10 |
| 1943 | 7 |
| 1944 | 13 |
| 1945 | 11 |
| 1946 | 10 |
| 1947 | 16 |
| 1948 | 5 |
| 1949 | 9 |
| 1950 | 8 |
| 1951 | 10 |
| 1952 | 7 |
| 1953 | 5 |
| 1954 | 6 |
| 1955 | 20 |
| 1956 | 12 |
| 1957 | 8 |
| 1958 | 12 |
| 1959 | 16 |
| 1960 | 6 |
| 1961 | 1 |
| 1962 | 22 |
| 1963 | 14 |
| 1964 | 12 |
| 1965 | 10 |
| 1966 | 4 |
| 1967 | 12 |
| 1968 | 9 |
| 1969 | 5 |
| 1970 | 16 |
| 1971 | 6 |
| 1972 | 14 |
| 1973 | 5 |
| 1974 | 15 |
| 1975 | 4 |
| 1976 | 7 |
| 1977 | 14 |
| 1978 | 3 |
| 1979 | 6 |
| 1980 | 6 |
| 1981 | 12 |
| 1982 | 2 |
| 1983 | 17 |
| 1984 | 9 |
| 1985 | 11 |
| 1986 | 2 |
| 1987 | 11 |
| 1988 | 13 |
| 1989 | 15 |
| 1990 | 11 |
| 1991 | 22 |
| 1992 | 11 |
| 1993 | 6 |
| 1994 | 2 |
| 1995 | 9 |
| 1996 | 14 |
| 1997 | 8 |
| 1998 | 11 |
| 1999 | 8 |
| 2000 | 15 |
| 2001 | 9 |
| 2002 | 12 |
| 2003 | 4 |
| 2004 | 9 |
| 2005 | 9 |
| 2006 | 8 |
| 2007 | 4 |
| 2008 | 5 |
| 2009 | 13 |
| 2010 | 4 |
| 2011 | 4 |
| 2012 | 19 |
| 2013 | 9 |
| 2014 | 14 |
| 2015 | 6 |
| 2016 | 10 |
| 2017 | 9 |
| 2018 | 13 |
| 2019 | 8 |
| 2020 | 16 |
| 2021 | 10 |
| 2022 | 10 |
| 2023 | 16 |
| 2024 | 8 |
| 2025 | 9 |
| 2026 | 7 |
All-Time Record Progression
4 new records| Date | Kind | Detail |
|---|---|---|
| 1933-09-01 | Record daily precipitation | Record daily precipitation 162.8 mm (6.4 in) |
| 1936-07-04 | Record high maximum temperature | Record high maximum temperature 43.9 C (111.0 F) |
| 1951-02-28 | Record daily snowfall | Record daily snowfall 35.6 cm (14.0 in) |
| 1962-02-18 | Record daily snowfall | Record daily snowfall 45.7 cm (18.0 in) |
Wettest Day of Each Month
Jun: 162.8 mm (6.4 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 27.7 mm (1.1 in) | 11 January 1975 |
| Feb | 44.2 mm (1.7 in) | 28 February 1951 |
| Mar | 51.6 mm (2.0 in) | 31 March 2006 |
| Apr | 91.4 mm (3.6 in) | 23 April 2001 |
| May | 88.6 mm (3.5 in) | 22 May 1936 |
| Jun | 162.8 mm (6.4 in) | 22 June 2024 |
| Jul | 130.8 mm (5.1 in) | 22 July 2010 |
| Aug | 105.4 mm (4.1 in) | 16 August 1977 |
| Sep | 162.8 mm (6.4 in) | 1 September 1933 |
| Oct | 69.3 mm (2.7 in) | 16 October 1968 |
| Nov | 64.8 mm (2.6 in) | 20 November 1975 |
| Dec | 39.9 mm (1.6 in) | 30 December 1931 |
Period of Record Coverage
1893 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1893 | 251 | 69% | No |
| 1894 | 358 | 98% | Yes |
| 1895 | 359 | 98% | Yes |
| 1896 | 351 | 96% | Yes |
| 1897 | 351 | 96% | Yes |
| 1898 | 211 | 58% | No |
| 1899 | 55 | 15% | No |
| 1904 | 357 | 98% | Yes |
| 1905 | 357 | 98% | Yes |
| 1906 | 328 | 90% | No |
| 1907 | 360 | 99% | Yes |
| 1908 | 272 | 74% | No |
| 1909 | 360 | 99% | Yes |
| 1910 | 321 | 88% | No |
| 1911 | 364 | 100% | Yes |
| 1912 | 363 | 99% | Yes |
| 1913 | 270 | 74% | No |
| 1914 | 329 | 90% | Yes |
| 1915 | 333 | 91% | Yes |
| 1916 | 360 | 98% | Yes |
| 1917 | 364 | 100% | Yes |
| 1918 | 365 | 100% | Yes |
| 1919 | 363 | 99% | Yes |
| 1920 | 364 | 99% | Yes |
| 1921 | 363 | 99% | Yes |
| 1922 | 365 | 100% | Yes |
| 1923 | 365 | 100% | Yes |
| 1924 | 366 | 100% | Yes |
| 1925 | 365 | 100% | Yes |
| 1926 | 364 | 100% | Yes |
| 1927 | 365 | 100% | Yes |
| 1928 | 366 | 100% | Yes |
| 1929 | 364 | 100% | Yes |
| 1930 | 365 | 100% | Yes |
| 1931 | 365 | 100% | Yes |
| 1932 | 365 | 100% | Yes |
| 1933 | 365 | 100% | Yes |
| 1934 | 364 | 100% | Yes |
| 1935 | 365 | 100% | Yes |
| 1936 | 363 | 99% | 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 | 365 | 100% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 363 | 99% | Yes |
| 1948 | 366 | 100% | Yes |
| 1949 | 364 | 100% | Yes |
| 1950 | 363 | 99% | Yes |
| 1951 | 364 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 362 | 99% | Yes |
| 1954 | 364 | 100% | Yes |
| 1955 | 362 | 99% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 364 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 364 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 363 | 99% | Yes |
| 1966 | 363 | 99% | Yes |
| 1967 | 359 | 98% | Yes |
| 1968 | 363 | 99% | Yes |
| 1969 | 328 | 90% | No |
| 1970 | 364 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 335 | 92% | Yes |
| 1974 | 334 | 92% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 334 | 91% | Yes |
| 1977 | 362 | 99% | Yes |
| 1978 | 333 | 91% | Yes |
| 1979 | 363 | 99% | Yes |
| 1980 | 363 | 99% | Yes |
| 1981 | 361 | 99% | Yes |
| 1982 | 335 | 92% | Yes |
| 1983 | 362 | 99% | Yes |
| 1984 | 364 | 99% | Yes |
| 1985 | 354 | 97% | Yes |
| 1986 | 363 | 99% | Yes |
| 1987 | 349 | 96% | Yes |
| 1988 | 365 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 365 | 100% | Yes |
| 1993 | 361 | 99% | Yes |
| 1994 | 362 | 99% | Yes |
| 1995 | 365 | 100% | Yes |
| 1996 | 363 | 99% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 364 | 100% | Yes |
| 1999 | 364 | 100% | Yes |
| 2000 | 361 | 99% | Yes |
| 2001 | 361 | 99% | Yes |
| 2002 | 363 | 99% | Yes |
| 2003 | 361 | 99% | Yes |
| 2004 | 363 | 99% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 364 | 99% | Yes |
| 2009 | 364 | 100% | Yes |
| 2010 | 361 | 99% | Yes |
| 2011 | 361 | 99% | Yes |
| 2012 | 364 | 99% | Yes |
| 2013 | 365 | 100% | Yes |
| 2014 | 365 | 100% | Yes |
| 2015 | 364 | 100% | Yes |
| 2016 | 365 | 100% | Yes |
| 2017 | 358 | 98% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 363 | 99% | Yes |
| 2020 | 361 | 99% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 362 | 99% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 365 | 100% | Yes |
| 2026 | 282 | 77% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 28 June 2026 | Rock Rapids, US | daily rain | 63.2 mm (2.5 in) | 17.5 mm (0.7 in) | 36 years | 31 of 100 (Routine) |
| 27 April 2026 | Rock Rapids, US | daily rain | 33.0 mm (1.3 in) | 0.7 mm (0.03 in) | 40 years | 22 of 100 (Routine) |
| 26 March 2026 | Rock Rapids, US | daily high max | 26.1 C (79.0 F) | 0.5 C (0.9 F) | 116 years | 40 of 100 (Notable) |
| 22 March 2026 | Rock Rapids, US | monthly high max (Tie) | 32.2 C (90.0 F) | tie | 58 years | 9 of 100 (Routine) |
| 21 March 2026 | Rock Rapids, US | daily high max | 25.0 C (77.0 F) | 0.6 C (1.1 F) | 87 years | 36 of 100 (Notable) |
| 17 March 2026 | Rock Rapids, US | daily low max | -8.9 C (16.0 F) | 1.1 C (2.0 F) | 84 years | 36 of 100 (Notable) |
| 9 March 2026 | Rock Rapids, US | daily high max | 22.8 C (73.0 F) | 3.4 C (6.1 F) | 5 years | 15 of 100 (Routine) |
| 17 February 2026 | Rock Rapids, US | daily high max (Tie) | 18.3 C (64.9 F) | tie | 44 years | 5 of 100 (Routine) |
| 16 February 2026 | Rock Rapids, US | daily high max | 17.2 C (63.0 F) | 1.6 C (2.9 F) | 126 years | 42 of 100 (Notable) |
| 15 February 2026 | Rock Rapids, US | daily high max | 17.8 C (64.0 F) | 1.1 C (2.0 F) | 104 years | 41 of 100 (Notable) |
| 25 December 2025 | Rock Rapids, US | daily high min | 0.0 C (32.0 F) | 1.1 C (2.0 F) | 94 years | 39 of 100 (Notable) |
| 13 December 2025 | Rock Rapids, US | daily snowfall (Tie) | 5.1 cm (2.0 in) | tie | 56 years | 6 of 100 (Routine) |
| 4 December 2025 | Rock Rapids, US | daily low min | -23.3 C (-9.9 F) | 1.1 C (2.0 F) | 47 years | 25 of 100 (Routine) |
| 29 November 2025 | Rock Rapids, US | daily snowfall | 9.7 cm (3.8 in) | 4.6 cm (1.8 in) | 38 years | 28 of 100 (Routine) |
| 15 November 2025 | Rock Rapids, US | daily high max (Tie) | 23.3 C (73.9 F) | tie | 72 years | 7 of 100 (Routine) |
| 5 October 2025 | Rock Rapids, US | daily high min | 18.9 C (66.0 F) | 1.7 C (3.1 F) | 70 years | 34 of 100 (Routine) |
| 6 August 2025 | Rock Rapids, US | daily rain | 33.0 mm (1.3 in) | 5.8 mm (0.23 in) | 114 years | 44 of 100 (Notable) |
| 5 July 2025 | Rock Rapids, US | daily rain | 22.9 mm (0.9 in) | 3.6 mm (0.14 in) | 104 years | 20 of 100 (Routine) |
| 22 June 2025 | Rock Rapids, US | monthly high min | 25.6 C (78.1 F) | 0.6 C (1.1 F) | 36 years | 32 of 100 (Routine) |
| 22 May 2025 | Rock Rapids, US | daily low max | 10.0 C (50.0 F) | 0.6 C (1.1 F) | 6 years | 11 of 100 (Routine) |
Climate Trend
112 complete years, 1894 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1894 | 8.7 C | +0.92 C |
| 1895 | 6.7 C | -1.02 C |
| 1896 | 6.5 C | -1.31 C |
| 1897 | 6.3 C | -1.42 C |
| 1904 | 7.2 C | -0.59 C |
| 1905 | 7.7 C | -0.06 C |
| 1907 | 6.5 C | -1.31 C |
| 1909 | 7.1 C | -0.67 C |
| 1911 | 8.2 C | +0.41 C |
| 1912 | 6.2 C | -1.53 C |
| 1916 | 6.6 C | -1.12 C |
| 1917 | 5.6 C | -2.12 C |
| 1918 | 8.1 C | +0.33 C |
| 1919 | 7.6 C | -0.20 C |
| 1920 | 7.5 C | -0.23 C |
| 1921 | 9.6 C | +1.80 C |
| 1922 | 8.3 C | +0.54 C |
| 1923 | 8.2 C | +0.40 C |
| 1924 | 6.6 C | -1.21 C |
| 1925 | 8.0 C | +0.26 C |
| 1926 | 8.0 C | +0.23 C |
| 1927 | 7.3 C | -0.48 C |
| 1928 | 7.9 C | +0.16 C |
| 1929 | 6.2 C | -1.56 C |
| 1930 | 8.6 C | +0.79 C |
| 1931 | 10.7 C | +2.94 C |
| 1932 | 7.2 C | -0.55 C |
| 1933 | 8.6 C | +0.82 C |
| 1934 | 9.1 C | +1.29 C |
| 1935 | 8.1 C | +0.33 C |
| 1936 | 7.3 C | -0.42 C |
| 1937 | 7.1 C | -0.71 C |
| 1938 | 9.0 C | +1.22 C |
| 1939 | 9.2 C | +1.39 C |
| 1940 | 7.6 C | -0.16 C |
| 1941 | 9.2 C | +1.40 C |
| 1942 | 8.0 C | +0.22 C |
| 1943 | 7.6 C | -0.17 C |
| 1944 | 8.4 C | +0.65 C |
| 1945 | 7.5 C | -0.25 C |
| 1946 | 8.6 C | +0.82 C |
| 1947 | 8.2 C | +0.42 C |
| 1948 | 8.1 C | +0.34 C |
| 1949 | 8.2 C | +0.44 C |
| 1950 | 6.1 C | -1.63 C |
| 1951 | 6.0 C | -1.76 C |
| 1952 | 8.0 C | +0.21 C |
| 1953 | 8.6 C | +0.83 C |
| 1954 | 8.8 C | +0.99 C |
| 1955 | 8.2 C | +0.48 C |
| 1956 | 7.9 C | +0.18 C |
| 1957 | 8.1 C | +0.31 C |
| 1958 | 8.4 C | +0.62 C |
| 1959 | 7.8 C | +0.08 C |
| 1960 | 7.3 C | -0.48 C |
| 1961 | 7.6 C | -0.20 C |
| 1962 | 7.7 C | -0.06 C |
| 1963 | 8.9 C | +1.17 C |
| 1964 | 8.6 C | +0.83 C |
| 1966 | 7.5 C | -0.30 C |
| 1967 | 7.9 C | +0.16 C |
| 1968 | 8.6 C | +0.84 C |
| 1970 | 6.8 C | -0.97 C |
| 1971 | 7.4 C | -0.38 C |
| 1972 | 6.2 C | -1.54 C |
| 1975 | 7.1 C | -0.71 C |
| 1977 | 8.4 C | +0.66 C |
| 1979 | 6.0 C | -1.75 C |
| 1980 | 8.1 C | +0.34 C |
| 1981 | 8.7 C | +0.89 C |
| 1983 | 7.2 C | -0.52 C |
| 1984 | 7.4 C | -0.39 C |
| 1985 | 6.4 C | -1.36 C |
| 1986 | 8.0 C | +0.26 C |
| 1988 | 7.8 C | +0.01 C |
| 1989 | 6.8 C | -0.97 C |
| 1990 | 8.1 C | +0.33 C |
| 1991 | 7.8 C | -0.01 C |
| 1992 | 7.3 C | -0.51 C |
| 1993 | 5.6 C | -2.14 C |
| 1994 | 7.1 C | -0.67 C |
| 1995 | 7.1 C | -0.68 C |
| 1996 | 5.7 C | -2.05 C |
| 1997 | 7.0 C | -0.76 C |
| 1998 | 9.3 C | +1.51 C |
| 1999 | 8.6 C | +0.88 C |
| 2000 | 7.6 C | -0.15 C |
| 2001 | 8.1 C | +0.37 C |
| 2002 | 8.2 C | +0.43 C |
| 2003 | 7.7 C | -0.03 C |
| 2004 | 8.1 C | +0.31 C |
| 2005 | 8.8 C | +1.04 C |
| 2006 | 9.2 C | +1.39 C |
| 2007 | 8.3 C | +0.49 C |
| 2008 | 6.4 C | -1.37 C |
| 2009 | 7.0 C | -0.73 C |
| 2010 | 7.8 C | 0.00 C |
| 2011 | 7.6 C | -0.20 C |
| 2012 | 9.8 C | +2.06 C |
| 2013 | 6.6 C | -1.14 C |
| 2014 | 6.5 C | -1.31 C |
| 2015 | 8.6 C | +0.83 C |
| 2016 | 9.2 C | +1.41 C |
| 2017 | 8.6 C | +0.85 C |
| 2018 | 7.2 C | -0.53 C |
| 2019 | 6.6 C | -1.12 C |
| 2020 | 8.5 C | +0.70 C |
| 2021 | 9.0 C | +1.23 C |
| 2022 | 7.4 C | -0.39 C |
| 2023 | 8.5 C | +0.77 C |
| 2024 | 9.5 C | +1.74 C |
| 2025 | 8.8 C | +1.05 C |
The fitted trend in annual mean temperature here over 1894 to 2025 is 0.03 C (-0.02 to 0.08) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.05 F (-0.03 to 0.14) per decade. The slope is a straight line fitted to 112 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.03 C (-0.02 to 0.08) per decade | 0.05 F (-0.03 to 0.14) per decade | 1894 to 2025 | 112 | Not clearly different from zero |
| Mean daily maximum | 0.01 C (-0.05 to 0.06) per decade | 0.01 F (-0.09 to 0.12) per decade | 1894 to 2025 | 112 | Not clearly different from zero |
| Mean daily minimum | 0.05 C (0.00 to 0.11) per decade | 0.10 F (0.00 to 0.19) per decade | 1894 to 2025 | 112 | Rise |
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1893 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 43.9 C (111.0 F) | 1936 | 36.7 C (98.1 F) | 130 |
| Coldest night (TNn) | -40.0 C (-40.0 F) | 1899 | -30.0 C (-22.0 F) | 130 |
| Wettest day (Rx1day) | 162.8 mm (6.4 in) | 1933 | 54.5 mm (2.1 in) | 130 |
| Wettest five days (Rx5day) | 332.2 mm (13.1 in) | 2024 | 88.4 mm (3.5 in) | 130 |
| Longest dry spell (CDD) | 78 days | 1931 | 28 days | 130 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1893 | 37.2 C (99.0 F) |
| 1894 | 41.1 C (106.0 F) |
| 1895 | 39.4 C (102.9 F) |
| 1896 | 38.3 C (100.9 F) |
| 1897 | 37.8 C (100.0 F) |
| 1898 | 34.4 C (93.9 F) |
| 1899 | 15.6 C (60.1 F) |
| 1904 | 33.3 C (91.9 F) |
| 1905 | 35.6 C (96.1 F) |
| 1906 | 36.7 C (98.1 F) |
| 1907 | 36.7 C (98.1 F) |
| 1908 | 37.2 C (99.0 F) |
| 1909 | 36.1 C (97.0 F) |
| 1910 | 35.6 C (96.1 F) |
| 1911 | 41.7 C (107.1 F) |
| 1912 | 36.7 C (98.1 F) |
| 1913 | 38.3 C (100.9 F) |
| 1914 | 36.7 C (98.1 F) |
| 1915 | 32.2 C (90.0 F) |
| 1916 | 35.6 C (96.1 F) |
| 1917 | 38.3 C (100.9 F) |
| 1918 | 35.0 C (95.0 F) |
| 1919 | 36.1 C (97.0 F) |
| 1920 | 36.1 C (97.0 F) |
| 1921 | 36.7 C (98.1 F) |
| 1922 | 37.8 C (100.0 F) |
| 1923 | 35.0 C (95.0 F) |
| 1924 | 34.4 C (93.9 F) |
| 1925 | 38.9 C (102.0 F) |
| 1926 | 41.1 C (106.0 F) |
| 1927 | 36.7 C (98.1 F) |
| 1928 | 35.0 C (95.0 F) |
| 1929 | 36.1 C (97.0 F) |
| 1930 | 41.7 C (107.1 F) |
| 1931 | 40.0 C (104.0 F) |
| 1932 | 38.9 C (102.0 F) |
| 1933 | 40.0 C (104.0 F) |
| 1934 | 41.7 C (107.1 F) |
| 1935 | 40.6 C (105.1 F) |
| 1936 | 43.9 C (111.0 F) |
| 1937 | 40.0 C (104.0 F) |
| 1938 | 37.2 C (99.0 F) |
| 1939 | 38.9 C (102.0 F) |
| 1940 | 40.6 C (105.1 F) |
| 1941 | 38.3 C (100.9 F) |
| 1942 | 36.7 C (98.1 F) |
| 1943 | 35.0 C (95.0 F) |
| 1944 | 35.6 C (96.1 F) |
| 1945 | 36.7 C (98.1 F) |
| 1946 | 36.1 C (97.0 F) |
| 1947 | 42.2 C (108.0 F) |
| 1948 | 37.2 C (99.0 F) |
| 1949 | 36.7 C (98.1 F) |
| 1950 | 33.3 C (91.9 F) |
| 1951 | 33.3 C (91.9 F) |
| 1952 | 35.6 C (96.1 F) |
| 1953 | 37.8 C (100.0 F) |
| 1954 | 37.8 C (100.0 F) |
| 1955 | 38.3 C (100.9 F) |
| 1956 | 37.8 C (100.0 F) |
| 1957 | 36.7 C (98.1 F) |
| 1958 | 37.2 C (99.0 F) |
| 1959 | 37.8 C (100.0 F) |
| 1960 | 37.2 C (99.0 F) |
| 1961 | 35.6 C (96.1 F) |
| 1962 | 34.4 C (93.9 F) |
| 1963 | 35.6 C (96.1 F) |
| 1964 | 35.6 C (96.1 F) |
| 1965 | 38.3 C (100.9 F) |
| 1966 | 40.0 C (104.0 F) |
| 1967 | 38.3 C (100.9 F) |
| 1968 | 37.2 C (99.0 F) |
| 1969 | 33.9 C (93.0 F) |
| 1970 | 37.8 C (100.0 F) |
| 1971 | 36.7 C (98.1 F) |
| 1972 | 35.6 C (96.1 F) |
| 1973 | 36.7 C (98.1 F) |
| 1974 | 39.4 C (102.9 F) |
| 1975 | 36.7 C (98.1 F) |
| 1976 | 42.2 C (108.0 F) |
| 1977 | 36.7 C (98.1 F) |
| 1978 | 37.2 C (99.0 F) |
| 1979 | 37.8 C (100.0 F) |
| 1980 | 38.9 C (102.0 F) |
| 1981 | 37.8 C (100.0 F) |
| 1982 | 38.3 C (100.9 F) |
| 1983 | 38.9 C (102.0 F) |
| 1984 | 38.3 C (100.9 F) |
| 1985 | 36.7 C (98.1 F) |
| 1986 | 36.7 C (98.1 F) |
| 1987 | 37.2 C (99.0 F) |
| 1988 | 41.7 C (107.1 F) |
| 1989 | 39.4 C (102.9 F) |
| 1990 | 38.9 C (102.0 F) |
| 1991 | 35.6 C (96.1 F) |
| 1992 | 32.8 C (91.0 F) |
| 1993 | 33.9 C (93.0 F) |
| 1994 | 35.6 C (96.1 F) |
| 1995 | 38.9 C (102.0 F) |
| 1996 | 33.9 C (93.0 F) |
| 1997 | 36.7 C (98.1 F) |
| 1998 | 35.6 C (96.1 F) |
| 1999 | 35.6 C (96.1 F) |
| 2000 | 37.2 C (99.0 F) |
| 2001 | 35.6 C (96.1 F) |
| 2002 | 38.3 C (100.9 F) |
| 2003 | 37.8 C (100.0 F) |
| 2004 | 35.0 C (95.0 F) |
| 2005 | 36.7 C (98.1 F) |
| 2006 | 37.2 C (99.0 F) |
| 2007 | 36.7 C (98.1 F) |
| 2008 | 36.7 C (98.1 F) |
| 2009 | 35.0 C (95.0 F) |
| 2010 | 35.0 C (95.0 F) |
| 2011 | 37.8 C (100.0 F) |
| 2012 | 38.9 C (102.0 F) |
| 2013 | 36.1 C (97.0 F) |
| 2014 | 32.8 C (91.0 F) |
| 2015 | 35.6 C (96.1 F) |
| 2016 | 36.7 C (98.1 F) |
| 2017 | 35.0 C (95.0 F) |
| 2018 | 38.3 C (100.9 F) |
| 2019 | 36.7 C (98.1 F) |
| 2020 | 37.2 C (99.0 F) |
| 2021 | 37.2 C (99.0 F) |
| 2022 | 37.8 C (100.0 F) |
| 2023 | 37.2 C (99.0 F) |
| 2024 | 36.1 C (97.0 F) |
| 2025 | 37.2 C (99.0 F) |
| 2026 | 36.7 C (98.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1893 | -26.7 C (-16.1 F) |
| 1894 | -33.9 C (-29.0 F) |
| 1895 | -35.0 C (-31.0 F) |
| 1896 | -27.8 C (-18.0 F) |
| 1897 | -34.4 C (-29.9 F) |
| 1898 | -30.0 C (-22.0 F) |
| 1899 | -40.0 C (-40.0 F) |
| 1904 | -31.1 C (-24.0 F) |
| 1905 | -36.1 C (-33.0 F) |
| 1906 | -29.4 C (-20.9 F) |
| 1907 | -30.6 C (-23.1 F) |
| 1908 | -24.4 C (-11.9 F) |
| 1909 | -28.9 C (-20.0 F) |
| 1910 | -29.4 C (-20.9 F) |
| 1911 | -35.0 C (-31.0 F) |
| 1912 | -40.0 C (-40.0 F) |
| 1913 | -29.4 C (-20.9 F) |
| 1914 | -33.9 C (-29.0 F) |
| 1915 | -28.9 C (-20.0 F) |
| 1916 | -35.6 C (-32.1 F) |
| 1917 | -37.2 C (-35.0 F) |
| 1918 | -35.0 C (-31.0 F) |
| 1919 | -31.1 C (-24.0 F) |
| 1920 | -29.4 C (-20.9 F) |
| 1921 | -25.0 C (-13.0 F) |
| 1922 | -31.7 C (-25.1 F) |
| 1923 | -30.6 C (-23.1 F) |
| 1924 | -35.6 C (-32.1 F) |
| 1925 | -29.4 C (-20.9 F) |
| 1926 | -26.7 C (-16.1 F) |
| 1927 | -28.9 C (-20.0 F) |
| 1928 | -27.8 C (-18.0 F) |
| 1929 | -36.7 C (-34.1 F) |
| 1930 | -32.8 C (-27.0 F) |
| 1931 | -23.3 C (-9.9 F) |
| 1932 | -29.4 C (-20.9 F) |
| 1933 | -33.3 C (-27.9 F) |
| 1934 | -26.7 C (-16.1 F) |
| 1935 | -30.6 C (-23.1 F) |
| 1936 | -36.1 C (-33.0 F) |
| 1937 | -31.1 C (-24.0 F) |
| 1938 | -27.8 C (-18.0 F) |
| 1939 | -28.9 C (-20.0 F) |
| 1940 | -31.1 C (-24.0 F) |
| 1941 | -24.4 C (-11.9 F) |
| 1942 | -33.3 C (-27.9 F) |
| 1943 | -35.0 C (-31.0 F) |
| 1944 | -28.9 C (-20.0 F) |
| 1945 | -25.0 C (-13.0 F) |
| 1946 | -28.3 C (-18.9 F) |
| 1947 | -25.0 C (-13.0 F) |
| 1948 | -31.1 C (-24.0 F) |
| 1949 | -31.1 C (-24.0 F) |
| 1950 | -31.1 C (-24.0 F) |
| 1951 | -31.7 C (-25.1 F) |
| 1952 | -31.7 C (-25.1 F) |
| 1953 | -31.1 C (-24.0 F) |
| 1954 | -30.6 C (-23.1 F) |
| 1955 | -28.9 C (-20.0 F) |
| 1956 | -30.6 C (-23.1 F) |
| 1957 | -28.3 C (-18.9 F) |
| 1958 | -33.9 C (-29.0 F) |
| 1959 | -33.3 C (-27.9 F) |
| 1960 | -29.4 C (-20.9 F) |
| 1961 | -30.6 C (-23.1 F) |
| 1962 | -36.7 C (-34.1 F) |
| 1963 | -30.0 C (-22.0 F) |
| 1964 | -28.3 C (-18.9 F) |
| 1965 | -30.6 C (-23.1 F) |
| 1966 | -32.8 C (-27.0 F) |
| 1967 | -27.8 C (-18.0 F) |
| 1968 | -30.6 C (-23.1 F) |
| 1969 | -28.3 C (-18.9 F) |
| 1970 | -35.6 C (-32.1 F) |
| 1971 | -28.9 C (-20.0 F) |
| 1972 | -34.4 C (-29.9 F) |
| 1973 | -30.6 C (-23.1 F) |
| 1974 | -33.3 C (-27.9 F) |
| 1975 | -27.8 C (-18.0 F) |
| 1976 | -28.3 C (-18.9 F) |
| 1977 | -30.0 C (-22.0 F) |
| 1978 | -29.4 C (-20.9 F) |
| 1979 | -33.3 C (-27.9 F) |
| 1980 | -29.4 C (-20.9 F) |
| 1981 | -30.6 C (-23.1 F) |
| 1982 | -32.8 C (-27.0 F) |
| 1983 | -31.7 C (-25.1 F) |
| 1984 | -31.1 C (-24.0 F) |
| 1985 | -31.1 C (-24.0 F) |
| 1986 | -28.9 C (-20.0 F) |
| 1987 | -28.9 C (-20.0 F) |
| 1988 | -35.0 C (-31.0 F) |
| 1989 | -32.2 C (-26.0 F) |
| 1990 | -31.1 C (-24.0 F) |
| 1991 | -27.8 C (-18.0 F) |
| 1992 | -24.4 C (-11.9 F) |
| 1993 | -28.9 C (-20.0 F) |
| 1994 | -32.2 C (-26.0 F) |
| 1995 | -25.6 C (-14.1 F) |
| 1996 | -32.8 C (-27.0 F) |
| 1997 | -27.8 C (-18.0 F) |
| 1998 | -26.1 C (-15.0 F) |
| 1999 | -30.6 C (-23.1 F) |
| 2000 | -27.2 C (-17.0 F) |
| 2001 | -26.1 C (-15.0 F) |
| 2002 | -21.1 C (-6.0 F) |
| 2003 | -26.7 C (-16.1 F) |
| 2004 | -28.3 C (-18.9 F) |
| 2005 | -28.9 C (-20.0 F) |
| 2006 | -24.4 C (-11.9 F) |
| 2007 | -32.8 C (-27.0 F) |
| 2008 | -30.0 C (-22.0 F) |
| 2009 | -31.1 C (-24.0 F) |
| 2010 | -35.0 C (-31.0 F) |
| 2011 | -27.2 C (-17.0 F) |
| 2012 | -26.1 C (-15.0 F) |
| 2013 | -26.7 C (-16.1 F) |
| 2014 | -30.0 C (-22.0 F) |
| 2015 | -27.2 C (-17.0 F) |
| 2016 | -33.9 C (-29.0 F) |
| 2017 | -28.3 C (-18.9 F) |
| 2018 | -32.8 C (-27.0 F) |
| 2019 | -31.7 C (-25.1 F) |
| 2020 | -26.7 C (-16.1 F) |
| 2021 | -32.2 C (-26.0 F) |
| 2022 | -28.3 C (-18.9 F) |
| 2023 | -26.7 C (-16.1 F) |
| 2024 | -28.9 C (-20.0 F) |
| 2025 | -28.3 C (-18.9 F) |
| 2026 | -27.2 C (-17.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1893 | 54.4 mm (2.1 in) |
| 1894 | 38.1 mm (1.5 in) |
| 1895 | 55.9 mm (2.2 in) |
| 1896 | 55.9 mm (2.2 in) |
| 1897 | 43.2 mm (1.7 in) |
| 1898 | 48.3 mm (1.9 in) |
| 1899 | 7.6 mm (0.30 in) |
| 1904 | 55.9 mm (2.2 in) |
| 1905 | 105.4 mm (4.1 in) |
| 1906 | 39.4 mm (1.6 in) |
| 1907 | 73.7 mm (2.9 in) |
| 1908 | 45.7 mm (1.8 in) |
| 1909 | 53.3 mm (2.1 in) |
| 1910 | 45.5 mm (1.8 in) |
| 1911 | 59.7 mm (2.4 in) |
| 1912 | 34.3 mm (1.4 in) |
| 1913 | 36.6 mm (1.4 in) |
| 1914 | 44.5 mm (1.8 in) |
| 1915 | 52.6 mm (2.1 in) |
| 1916 | 62.2 mm (2.4 in) |
| 1917 | 71.9 mm (2.8 in) |
| 1918 | 46.0 mm (1.8 in) |
| 1919 | 43.2 mm (1.7 in) |
| 1920 | 47.8 mm (1.9 in) |
| 1921 | 53.3 mm (2.1 in) |
| 1922 | 47.0 mm (1.9 in) |
| 1923 | 47.0 mm (1.9 in) |
| 1924 | 39.4 mm (1.6 in) |
| 1925 | 34.8 mm (1.4 in) |
| 1926 | 72.4 mm (2.9 in) |
| 1927 | 48.3 mm (1.9 in) |
| 1928 | 61.5 mm (2.4 in) |
| 1929 | 84.3 mm (3.3 in) |
| 1930 | 57.2 mm (2.3 in) |
| 1931 | 76.2 mm (3.0 in) |
| 1932 | 76.2 mm (3.0 in) |
| 1933 | 162.8 mm (6.4 in) |
| 1934 | 72.6 mm (2.9 in) |
| 1935 | 40.4 mm (1.6 in) |
| 1936 | 88.6 mm (3.5 in) |
| 1937 | 38.9 mm (1.5 in) |
| 1938 | 54.4 mm (2.1 in) |
| 1939 | 54.1 mm (2.1 in) |
| 1940 | 46.5 mm (1.8 in) |
| 1941 | 32.3 mm (1.3 in) |
| 1942 | 69.3 mm (2.7 in) |
| 1943 | 87.9 mm (3.5 in) |
| 1944 | 51.6 mm (2.0 in) |
| 1945 | 64.8 mm (2.6 in) |
| 1946 | 80.0 mm (3.1 in) |
| 1947 | 21.3 mm (0.8 in) |
| 1948 | 39.4 mm (1.6 in) |
| 1949 | 47.0 mm (1.9 in) |
| 1950 | 54.9 mm (2.2 in) |
| 1951 | 44.2 mm (1.7 in) |
| 1952 | 37.3 mm (1.5 in) |
| 1953 | 54.6 mm (2.1 in) |
| 1954 | 40.9 mm (1.6 in) |
| 1955 | 30.7 mm (1.2 in) |
| 1956 | 46.5 mm (1.8 in) |
| 1957 | 53.3 mm (2.1 in) |
| 1958 | 35.8 mm (1.4 in) |
| 1959 | 101.9 mm (4.0 in) |
| 1960 | 49.8 mm (2.0 in) |
| 1961 | 34.0 mm (1.3 in) |
| 1962 | 67.8 mm (2.7 in) |
| 1963 | 45.0 mm (1.8 in) |
| 1964 | 70.9 mm (2.8 in) |
| 1965 | 55.6 mm (2.2 in) |
| 1966 | 43.2 mm (1.7 in) |
| 1967 | 74.4 mm (2.9 in) |
| 1968 | 69.3 mm (2.7 in) |
| 1969 | 79.2 mm (3.1 in) |
| 1970 | 61.7 mm (2.4 in) |
| 1971 | 88.6 mm (3.5 in) |
| 1972 | 43.2 mm (1.7 in) |
| 1973 | 39.4 mm (1.6 in) |
| 1974 | 21.1 mm (0.8 in) |
| 1975 | 81.8 mm (3.2 in) |
| 1976 | 32.5 mm (1.3 in) |
| 1977 | 105.4 mm (4.1 in) |
| 1978 | 83.3 mm (3.3 in) |
| 1979 | 80.5 mm (3.2 in) |
| 1980 | 39.9 mm (1.6 in) |
| 1981 | 48.5 mm (1.9 in) |
| 1982 | 97.8 mm (3.9 in) |
| 1983 | 81.3 mm (3.2 in) |
| 1984 | 55.9 mm (2.2 in) |
| 1985 | 69.9 mm (2.8 in) |
| 1986 | 55.9 mm (2.2 in) |
| 1987 | 44.5 mm (1.8 in) |
| 1988 | 72.9 mm (2.9 in) |
| 1989 | 88.9 mm (3.5 in) |
| 1990 | 91.4 mm (3.6 in) |
| 1991 | 31.0 mm (1.2 in) |
| 1992 | 52.1 mm (2.1 in) |
| 1993 | 87.4 mm (3.4 in) |
| 1994 | 47.2 mm (1.9 in) |
| 1995 | 53.3 mm (2.1 in) |
| 1996 | 66.8 mm (2.6 in) |
| 1997 | 48.0 mm (1.9 in) |
| 1998 | 54.4 mm (2.1 in) |
| 1999 | 62.7 mm (2.5 in) |
| 2000 | 45.2 mm (1.8 in) |
| 2001 | 91.4 mm (3.6 in) |
| 2002 | 39.9 mm (1.6 in) |
| 2003 | 76.5 mm (3.0 in) |
| 2004 | 95.0 mm (3.7 in) |
| 2005 | 89.9 mm (3.5 in) |
| 2006 | 102.9 mm (4.1 in) |
| 2007 | 48.3 mm (1.9 in) |
| 2008 | 61.5 mm (2.4 in) |
| 2009 | 39.4 mm (1.6 in) |
| 2010 | 130.8 mm (5.1 in) |
| 2011 | 43.2 mm (1.7 in) |
| 2012 | 63.5 mm (2.5 in) |
| 2013 | 59.4 mm (2.3 in) |
| 2014 | 119.4 mm (4.7 in) |
| 2015 | 38.1 mm (1.5 in) |
| 2016 | 94.7 mm (3.7 in) |
| 2017 | 56.4 mm (2.2 in) |
| 2018 | 110.5 mm (4.4 in) |
| 2019 | 59.7 mm (2.4 in) |
| 2020 | 54.6 mm (2.1 in) |
| 2021 | 65.5 mm (2.6 in) |
| 2022 | 50.8 mm (2.0 in) |
| 2023 | 39.9 mm (1.6 in) |
| 2024 | 162.8 mm (6.4 in) |
| 2025 | 34.5 mm (1.4 in) |
| 2026 | 63.2 mm (2.5 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1893 | 93.2 mm (3.7 in) |
| 1894 | 79.5 mm (3.1 in) |
| 1895 | 96.5 mm (3.8 in) |
| 1896 | 91.3 mm (3.6 in) |
| 1897 | 101.3 mm (4.0 in) |
| 1898 | 76.7 mm (3.0 in) |
| 1899 | 8.9 mm (0.35 in) |
| 1904 | 57.2 mm (2.3 in) |
| 1905 | 147.3 mm (5.8 in) |
| 1906 | 67.3 mm (2.6 in) |
| 1907 | 101.7 mm (4.0 in) |
| 1908 | 64.5 mm (2.5 in) |
| 1909 | 71.9 mm (2.8 in) |
| 1910 | 70.9 mm (2.8 in) |
| 1911 | 82.8 mm (3.3 in) |
| 1912 | 63.2 mm (2.5 in) |
| 1913 | 58.7 mm (2.3 in) |
| 1914 | 77.6 mm (3.1 in) |
| 1915 | 87.4 mm (3.4 in) |
| 1916 | 62.2 mm (2.4 in) |
| 1917 | 85.4 mm (3.4 in) |
| 1918 | 88.6 mm (3.5 in) |
| 1919 | 84.0 mm (3.3 in) |
| 1920 | 88.7 mm (3.5 in) |
| 1921 | 109.3 mm (4.3 in) |
| 1922 | 54.7 mm (2.2 in) |
| 1923 | 71.2 mm (2.8 in) |
| 1924 | 46.5 mm (1.8 in) |
| 1925 | 59.9 mm (2.4 in) |
| 1926 | 79.0 mm (3.1 in) |
| 1927 | 93.3 mm (3.7 in) |
| 1928 | 87.2 mm (3.4 in) |
| 1929 | 86.3 mm (3.4 in) |
| 1930 | 141.0 mm (5.6 in) |
| 1931 | 76.2 mm (3.0 in) |
| 1932 | 120.1 mm (4.7 in) |
| 1933 | 162.8 mm (6.4 in) |
| 1934 | 156.9 mm (6.2 in) |
| 1935 | 64.0 mm (2.5 in) |
| 1936 | 135.1 mm (5.3 in) |
| 1937 | 45.8 mm (1.8 in) |
| 1938 | 122.1 mm (4.8 in) |
| 1939 | 68.5 mm (2.7 in) |
| 1940 | 61.2 mm (2.4 in) |
| 1941 | 49.0 mm (1.9 in) |
| 1942 | 108.2 mm (4.3 in) |
| 1943 | 138.5 mm (5.5 in) |
| 1944 | 109.4 mm (4.3 in) |
| 1945 | 98.3 mm (3.9 in) |
| 1946 | 123.6 mm (4.9 in) |
| 1947 | 25.1 mm (1.0 in) |
| 1948 | 56.4 mm (2.2 in) |
| 1949 | 83.1 mm (3.3 in) |
| 1950 | 93.6 mm (3.7 in) |
| 1951 | 86.1 mm (3.4 in) |
| 1952 | 102.1 mm (4.0 in) |
| 1953 | 73.2 mm (2.9 in) |
| 1954 | 135.3 mm (5.3 in) |
| 1955 | 45.0 mm (1.8 in) |
| 1956 | 59.5 mm (2.3 in) |
| 1957 | 85.4 mm (3.4 in) |
| 1958 | 46.0 mm (1.8 in) |
| 1959 | 126.5 mm (5.0 in) |
| 1960 | 96.0 mm (3.8 in) |
| 1961 | 72.1 mm (2.8 in) |
| 1962 | 78.5 mm (3.1 in) |
| 1963 | 69.4 mm (2.7 in) |
| 1964 | 116.1 mm (4.6 in) |
| 1965 | 110.8 mm (4.4 in) |
| 1966 | 61.7 mm (2.4 in) |
| 1967 | 85.3 mm (3.4 in) |
| 1968 | 135.8 mm (5.3 in) |
| 1969 | 103.5 mm (4.1 in) |
| 1970 | 100.0 mm (3.9 in) |
| 1971 | 92.2 mm (3.6 in) |
| 1972 | 91.9 mm (3.6 in) |
| 1973 | 69.4 mm (2.7 in) |
| 1974 | 44.8 mm (1.8 in) |
| 1975 | 153.7 mm (6.1 in) |
| 1976 | 32.5 mm (1.3 in) |
| 1977 | 109.5 mm (4.3 in) |
| 1978 | 146.8 mm (5.8 in) |
| 1979 | 106.7 mm (4.2 in) |
| 1980 | 43.8 mm (1.7 in) |
| 1981 | 63.5 mm (2.5 in) |
| 1982 | 107.5 mm (4.2 in) |
| 1983 | 109.8 mm (4.3 in) |
| 1984 | 94.8 mm (3.7 in) |
| 1985 | 101.9 mm (4.0 in) |
| 1986 | 114.3 mm (4.5 in) |
| 1987 | 75.5 mm (3.0 in) |
| 1988 | 76.2 mm (3.0 in) |
| 1989 | 149.9 mm (5.9 in) |
| 1990 | 121.8 mm (4.8 in) |
| 1991 | 44.2 mm (1.7 in) |
| 1992 | 104.9 mm (4.1 in) |
| 1993 | 114.6 mm (4.5 in) |
| 1994 | 56.3 mm (2.2 in) |
| 1995 | 78.3 mm (3.1 in) |
| 1996 | 88.1 mm (3.5 in) |
| 1997 | 55.6 mm (2.2 in) |
| 1998 | 67.8 mm (2.7 in) |
| 1999 | 75.6 mm (3.0 in) |
| 2000 | 71.6 mm (2.8 in) |
| 2001 | 124.8 mm (4.9 in) |
| 2002 | 55.1 mm (2.2 in) |
| 2003 | 140.3 mm (5.5 in) |
| 2004 | 139.7 mm (5.5 in) |
| 2005 | 106.7 mm (4.2 in) |
| 2006 | 160.8 mm (6.3 in) |
| 2007 | 63.6 mm (2.5 in) |
| 2008 | 97.4 mm (3.8 in) |
| 2009 | 56.9 mm (2.2 in) |
| 2010 | 145.8 mm (5.7 in) |
| 2011 | 60.9 mm (2.4 in) |
| 2012 | 99.8 mm (3.9 in) |
| 2013 | 96.9 mm (3.8 in) |
| 2014 | 278.1 mm (10.9 in) |
| 2015 | 92.0 mm (3.6 in) |
| 2016 | 94.7 mm (3.7 in) |
| 2017 | 99.8 mm (3.9 in) |
| 2018 | 174.0 mm (6.9 in) |
| 2019 | 102.7 mm (4.0 in) |
| 2020 | 95.7 mm (3.8 in) |
| 2021 | 91.1 mm (3.6 in) |
| 2022 | 60.2 mm (2.4 in) |
| 2023 | 46.5 mm (1.8 in) |
| 2024 | 332.2 mm (13.1 in) |
| 2025 | 83.1 mm (3.3 in) |
| 2026 | 95.2 mm (3.7 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1893 | 37 days |
| 1894 | 52 days |
| 1895 | 49 days |
| 1896 | 34 days |
| 1897 | 30 days |
| 1898 | 17 days |
| 1899 | 23 days |
| 1904 | 46 days |
| 1905 | 33 days |
| 1906 | 25 days |
| 1907 | 32 days |
| 1908 | 43 days |
| 1909 | 26 days |
| 1910 | 51 days |
| 1911 | 37 days |
| 1912 | 54 days |
| 1913 | 40 days |
| 1914 | 44 days |
| 1915 | 25 days |
| 1916 | 28 days |
| 1917 | 29 days |
| 1918 | 21 days |
| 1919 | 27 days |
| 1920 | 21 days |
| 1921 | 27 days |
| 1922 | 18 days |
| 1923 | 28 days |
| 1924 | 28 days |
| 1925 | 25 days |
| 1926 | 19 days |
| 1927 | 17 days |
| 1928 | 18 days |
| 1929 | 17 days |
| 1930 | 41 days |
| 1931 | 78 days |
| 1932 | 29 days |
| 1933 | 37 days |
| 1934 | 35 days |
| 1935 | 25 days |
| 1936 | 26 days |
| 1937 | 29 days |
| 1938 | 22 days |
| 1939 | 66 days |
| 1940 | 33 days |
| 1941 | 21 days |
| 1942 | 38 days |
| 1943 | 36 days |
| 1944 | 35 days |
| 1945 | 37 days |
| 1946 | 28 days |
| 1947 | 24 days |
| 1948 | 23 days |
| 1949 | 26 days |
| 1950 | 25 days |
| 1951 | 31 days |
| 1952 | 71 days |
| 1953 | 24 days |
| 1954 | 31 days |
| 1955 | 24 days |
| 1956 | 19 days |
| 1957 | 27 days |
| 1958 | 38 days |
| 1959 | 20 days |
| 1960 | 48 days |
| 1961 | 30 days |
| 1962 | 52 days |
| 1963 | 21 days |
| 1964 | 52 days |
| 1965 | 20 days |
| 1966 | 26 days |
| 1967 | 40 days |
| 1968 | 26 days |
| 1969 | 19 days |
| 1970 | 33 days |
| 1971 | 22 days |
| 1972 | 24 days |
| 1973 | 17 days |
| 1974 | 45 days |
| 1975 | 19 days |
| 1976 | 32 days |
| 1977 | 25 days |
| 1978 | 28 days |
| 1979 | 35 days |
| 1980 | 25 days |
| 1981 | 31 days |
| 1982 | 20 days |
| 1983 | 22 days |
| 1984 | 19 days |
| 1985 | 32 days |
| 1986 | 49 days |
| 1987 | 54 days |
| 1988 | 43 days |
| 1989 | 25 days |
| 1990 | 45 days |
| 1991 | 23 days |
| 1992 | 22 days |
| 1993 | 28 days |
| 1994 | 35 days |
| 1995 | 32 days |
| 1996 | 18 days |
| 1997 | 21 days |
| 1998 | 23 days |
| 1999 | 26 days |
| 2000 | 28 days |
| 2001 | 33 days |
| 2002 | 28 days |
| 2003 | 18 days |
| 2004 | 16 days |
| 2005 | 30 days |
| 2006 | 26 days |
| 2007 | 42 days |
| 2008 | 20 days |
| 2009 | 23 days |
| 2010 | 27 days |
| 2011 | 3 days |
| 2012 | 30 days |
| 2013 | 28 days |
| 2014 | 22 days |
| 2015 | 23 days |
| 2016 | 21 days |
| 2017 | 35 days |
| 2018 | 24 days |
| 2019 | 19 days |
| 2020 | 38 days |
| 2021 | 29 days |
| 2022 | 40 days |
| 2023 | 55 days |
| 2024 | 38 days |
| 2025 | 38 days |
| 2026 | 40 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
112 years with a frostAcross 112 years with a frost, the median last spring frost at Rock Rapids falls on 4 May and the median first autumn frost on 29 September, which leaves a median of 149 days between them.
In 1996 to 2025 the median growing season was 156 days. That is 17 days more than in 1894 to 1935.
Fitted over all years, the growing season changes by +2.1 days per decade at this station.
| Measure | Median, all years | Earliest period (1894 to 1935) | Recent period (1996 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 4 May | 13 May | 30 April | 13 days earlier | -1.1 days per decade |
| First autumn frost | 29 September | 27 September | 4 October | 7 days later | +1.1 days per decade |
| Growing days | 149 days | 139 days | 156 days | 17 days more | +2.1 days per decade |
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
118 years, 1894 to 2025A day with at least 56.2 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 154.3 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 | 56.2 mm (2.2 in) | |
| 5 years | 77.5 mm (3.1 in) | |
| 10 years | 93.4 mm (3.7 in) | |
| 25 years | 115.8 mm (4.6 in) | |
| 50 years | 134.3 mm (5.3 in) | |
| 100 years | 154.3 mm (6.1 in) |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 118 years of values from 1894 to 2025.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 162.8 mm (6.4 in) in 1933; 162.8 mm (6.4 in) in 2024; 130.8 mm (5.1 in) in 2010.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2011 to 2025 against 1961 to 1990Over 2011 to 2025, Rock Rapids had a mean temperature of 8.2 C (46.7 F) and 743.3 mm (29.3 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Prairie du Sac 2 N (United States, 521 km away), Genoa Dam 8 (United States, 399 km away) and NE Nebraska Exp STN (United States, 133 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Prairie du Sac 2 N | United States | 521 km (324 mi) | 7.9 C (46.2 F) | 766.5 mm (30.2 in) | 0.89 |
| Genoa Dam 8 | United States | 399 km (248 mi) | 8.3 C (46.9 F) | 786.1 mm (30.9 in) | 0.91 |
| NE Nebraska Exp STN | United States | 133 km (83 mi) | 8.1 C (46.5 F) | 653.0 mm (25.7 in) | 0.93 |
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 (2026-10-12).