Marshalltown Weather Records (USC00135198)
Record envelope, standing records and threshold days for Marshalltown (USC00135198), Iowa, United States, with 134 years of record.
Key Facts for Marshalltown
- Marshalltown (USC00135198) is a weather station in Iowa, United States at 42.06 latitude and -92.92 longitude, 265 m (870 ft) above sea level.
- The station reports from 1893 to 2026, 134 years of record.
- 1,464 records set at Marshalltown still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Marshalltown set a daily record high minimum temperature of 25.0 C (77.0 F) on 2 July 2026.
About the Station
- Location: Iowa, United States, 42.06 latitude, -92.92 longitude.
- Elevation: 265 m (870 ft).
- Period of record: 1893 to 2026, 134 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
4 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 18.3 C (64.9 F) | -36.7 C (-34.1 F) | 12.2 C (54.0 F) | -26.7 C (-16.1 F) |
| Feb | 24.4 C (75.9 F) | -37.2 C (-35.0 F) | 20.0 C (68.0 F) | -17.8 C (0.0 F) |
| Mar | 32.2 C (90.0 F) | -35.6 C (-32.1 F) | 31.1 C (88.0 F) | -15.0 C (5.0 F) |
| Apr | 34.4 C (93.9 F) | -15.6 C (3.9 F) | 30.6 C (87.1 F) | -2.2 C (28.0 F) |
| May | 40.0 C (104.0 F) | -6.7 C (19.9 F) | 32.8 C (91.0 F) | -1.1 C (30.0 F) |
| Jun | 40.6 C (105.1 F) | 1.7 C (35.1 F) | 33.3 C (91.9 F) | 10.6 C (51.1 F) |
| Jul | 44.4 C (111.9 F) | 5.0 C (41.0 F) | 35.0 C (95.0 F) | 12.2 C (54.0 F) |
| Aug | 42.8 C (109.0 F) | 1.7 C (35.1 F) | 32.8 C (91.0 F) | 15.0 C (59.0 F) |
| Sep | 39.4 C (102.9 F) | -6.7 C (19.9 F) | n/a | n/a |
| Oct | 34.4 C (93.9 F) | -19.4 C (-2.9 F) | n/a | n/a |
| Nov | 27.2 C (81.0 F) | -23.9 C (-11.0 F) | n/a | n/a |
| Dec | 22.8 C (73.0 F) | -33.3 C (-27.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1893 | 7 |
| 1894 | 5 |
| 1895 | 15 |
| 1896 | 9 |
| 1897 | 20 |
| 1898 | 15 |
| 1899 | 25 |
| 1900 | 10 |
| 1901 | 13 |
| 1902 | 15 |
| 1903 | 7 |
| 1904 | 6 |
| 1905 | 9 |
| 1906 | 5 |
| 1907 | 13 |
| 1908 | 7 |
| 1909 | 13 |
| 1910 | 15 |
| 1911 | 20 |
| 1912 | 17 |
| 1913 | 26 |
| 1914 | 12 |
| 1915 | 11 |
| 1916 | 14 |
| 1917 | 16 |
| 1918 | 12 |
| 1919 | 11 |
| 1920 | 8 |
| 1921 | 14 |
| 1922 | 6 |
| 1923 | 13 |
| 1924 | 7 |
| 1925 | 21 |
| 1926 | 7 |
| 1927 | 9 |
| 1928 | 9 |
| 1929 | 7 |
| 1930 | 28 |
| 1931 | 35 |
| 1932 | 10 |
| 1933 | 8 |
| 1934 | 36 |
| 1935 | 6 |
| 1936 | 40 |
| 1937 | 16 |
| 1938 | 9 |
| 1939 | 13 |
| 1940 | 13 |
| 1941 | 10 |
| 1942 | 18 |
| 1943 | 9 |
| 1944 | 11 |
| 1945 | 12 |
| 1946 | 15 |
| 1947 | 18 |
| 1948 | 6 |
| 1949 | 3 |
| 1950 | 22 |
| 1951 | 11 |
| 1952 | 11 |
| 1953 | 10 |
| 1954 | 7 |
| 1955 | 10 |
| 1956 | 4 |
| 1957 | 3 |
| 1958 | 5 |
| 1959 | 8 |
| 1960 | 7 |
| 1961 | 4 |
| 1962 | 10 |
| 1963 | 8 |
| 1964 | 8 |
| 1965 | 15 |
| 1966 | 13 |
| 1967 | 8 |
| 1968 | 6 |
| 1969 | 3 |
| 1970 | 12 |
| 1971 | 4 |
| 1972 | 6 |
| 1973 | 9 |
| 1974 | 5 |
| 1975 | 10 |
| 1976 | 14 |
| 1977 | 12 |
| 1978 | 3 |
| 1979 | 4 |
| 1980 | 6 |
| 1981 | 7 |
| 1982 | 10 |
| 1983 | 19 |
| 1984 | 7 |
| 1985 | 18 |
| 1986 | 8 |
| 1987 | 8 |
| 1988 | 11 |
| 1989 | 14 |
| 1990 | 15 |
| 1991 | 19 |
| 1992 | 8 |
| 1993 | 10 |
| 1994 | 8 |
| 1995 | 4 |
| 1996 | 13 |
| 1997 | 4 |
| 1998 | 13 |
| 1999 | 7 |
| 2000 | 12 |
| 2001 | 9 |
| 2002 | 7 |
| 2003 | 8 |
| 2004 | 12 |
| 2005 | 10 |
| 2006 | 9 |
| 2007 | 12 |
| 2008 | 5 |
| 2009 | 9 |
| 2010 | 8 |
| 2011 | 4 |
| 2012 | 20 |
| 2013 | 6 |
| 2014 | 11 |
| 2015 | 8 |
| 2016 | 1 |
| 2017 | 8 |
| 2018 | 13 |
| 2019 | 11 |
| 2020 | 8 |
| 2021 | 12 |
| 2022 | 6 |
| 2023 | 7 |
| 2024 | 8 |
| 2025 | 7 |
| 2026 | 7 |
All-Time Record Progression
18 new records| Date | Kind | Detail |
|---|---|---|
| 1924-01-05 | Record low maximum temperature | Record low maximum temperature -24.4 C (-11.9 F) |
| 1924-06-08 | Record daily precipitation | Record daily precipitation 124.5 mm (4.9 in) |
| 1926-09-19 | Record daily precipitation | Record daily precipitation 128.8 mm (5.1 in) |
| 1929-02-09 | Record snow depth | Record snow depth 408.9 cm (161.0 in) |
| 1930-01-22 | Record snow depth | Record snow depth 439.4 cm (173.0 in) |
| 1930-07-19 | Record high minimum temperature | Record high minimum temperature 26.7 C (80.1 F) |
| 1930-08-03 | Record high minimum temperature | Record high minimum temperature 27.8 C (82.0 F) |
| 1934-08-08 | Record high maximum temperature | Record high maximum temperature 42.8 C (109.0 F) |
| 1934-11-30 | Record daily snowfall | Record daily snowfall 35.6 cm (14.0 in) |
| 1936-02-05 | Record low minimum temperature | Record low minimum temperature -35.6 C (-32.1 F) |
| 1936-07-13 | Record high maximum temperature | Record high maximum temperature 43.3 C (109.9 F) |
| 1936-07-14 | Record high maximum temperature | Record high maximum temperature 44.4 C (111.9 F) |
| 1942-01-03 | Record snow depth | Record snow depth 457.2 cm (180.0 in) |
| 1959-03-06 | Record daily snowfall | Record daily snowfall 45.2 cm (17.8 in) |
| 1962-07-14 | Record daily precipitation | Record daily precipitation 167.1 mm (6.6 in) |
| 1994-01-18 | Record low maximum temperature | Record low maximum temperature -25.0 C (-13.0 F) |
| 1996-02-02 | Record low maximum temperature | Record low maximum temperature -26.1 C (-15.0 F) |
| 1996-02-03 | Record low minimum temperature | Record low minimum temperature -37.2 C (-35.0 F) |
Wettest Day of Each Month
Jul: 167.1 mm (6.6 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 38.6 mm (1.5 in) | 22 January 2018 |
| Feb | 51.1 mm (2.0 in) | 28 February 1948 |
| Mar | 58.7 mm (2.3 in) | 13 March 1990 |
| Apr | 71.1 mm (2.8 in) | 21 April 1928 |
| May | 105.4 mm (4.1 in) | 23 May 2004 |
| Jun | 124.5 mm (4.9 in) | 8 June 1924 |
| Jul | 167.1 mm (6.6 in) | 14 July 1962 |
| Aug | 140.7 mm (5.5 in) | 16 August 1977 |
| Sep | 128.8 mm (5.1 in) | 19 September 1926 |
| Oct | 104.1 mm (4.1 in) | 1 October 1911 |
| Nov | 96.0 mm (3.8 in) | 4 November 2003 |
| Dec | 66.0 mm (2.6 in) | 14 December 2015 |
Period of Record Coverage
1893 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1893 | 304 | 83% | No |
| 1894 | 90 | 25% | No |
| 1895 | 326 | 89% | No |
| 1896 | 351 | 96% | Yes |
| 1897 | 361 | 99% | Yes |
| 1898 | 330 | 90% | Yes |
| 1899 | 325 | 89% | No |
| 1900 | 364 | 100% | Yes |
| 1901 | 363 | 99% | Yes |
| 1902 | 362 | 99% | Yes |
| 1903 | 361 | 99% | Yes |
| 1904 | 358 | 98% | Yes |
| 1905 | 356 | 98% | Yes |
| 1906 | 349 | 96% | Yes |
| 1907 | 354 | 97% | Yes |
| 1908 | 356 | 97% | Yes |
| 1909 | 319 | 87% | No |
| 1910 | 353 | 97% | Yes |
| 1911 | 353 | 97% | Yes |
| 1912 | 356 | 97% | Yes |
| 1913 | 356 | 98% | Yes |
| 1914 | 331 | 91% | Yes |
| 1915 | 333 | 91% | Yes |
| 1916 | 337 | 92% | Yes |
| 1917 | 337 | 92% | Yes |
| 1918 | 339 | 93% | Yes |
| 1919 | 365 | 100% | Yes |
| 1920 | 344 | 94% | Yes |
| 1921 | 365 | 100% | Yes |
| 1922 | 364 | 100% | Yes |
| 1923 | 364 | 100% | Yes |
| 1924 | 366 | 100% | Yes |
| 1925 | 365 | 100% | Yes |
| 1926 | 365 | 100% | Yes |
| 1927 | 365 | 100% | Yes |
| 1928 | 366 | 100% | Yes |
| 1929 | 365 | 100% | Yes |
| 1930 | 363 | 99% | Yes |
| 1931 | 365 | 100% | Yes |
| 1932 | 366 | 100% | Yes |
| 1933 | 365 | 100% | Yes |
| 1934 | 365 | 100% | Yes |
| 1935 | 365 | 100% | Yes |
| 1936 | 366 | 100% | Yes |
| 1937 | 365 | 100% | Yes |
| 1938 | 365 | 100% | Yes |
| 1939 | 365 | 100% | Yes |
| 1940 | 366 | 100% | Yes |
| 1941 | 365 | 100% | Yes |
| 1942 | 365 | 100% | Yes |
| 1943 | 364 | 100% | Yes |
| 1944 | 365 | 100% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 364 | 100% | Yes |
| 1948 | 182 | 50% | No |
| 1949 | 212 | 58% | No |
| 1950 | 347 | 95% | Yes |
| 1951 | 363 | 99% | Yes |
| 1952 | 360 | 98% | Yes |
| 1953 | 364 | 100% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 360 | 99% | Yes |
| 1956 | 362 | 99% | Yes |
| 1957 | 359 | 98% | Yes |
| 1958 | 362 | 99% | Yes |
| 1959 | 362 | 99% | Yes |
| 1960 | 358 | 98% | Yes |
| 1961 | 363 | 99% | Yes |
| 1962 | 359 | 98% | Yes |
| 1963 | 364 | 100% | Yes |
| 1964 | 365 | 100% | Yes |
| 1965 | 363 | 99% | Yes |
| 1966 | 363 | 99% | Yes |
| 1967 | 360 | 99% | Yes |
| 1968 | 333 | 91% | Yes |
| 1969 | 363 | 99% | Yes |
| 1970 | 354 | 97% | Yes |
| 1971 | 364 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 364 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 364 | 100% | Yes |
| 1978 | 340 | 93% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 365 | 100% | Yes |
| 1983 | 364 | 100% | Yes |
| 1984 | 366 | 100% | Yes |
| 1985 | 364 | 100% | Yes |
| 1986 | 365 | 100% | Yes |
| 1987 | 363 | 99% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 362 | 99% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 364 | 100% | Yes |
| 1994 | 364 | 100% | Yes |
| 1995 | 362 | 99% | Yes |
| 1996 | 365 | 100% | Yes |
| 1997 | 361 | 99% | Yes |
| 1998 | 363 | 99% | Yes |
| 1999 | 364 | 100% | Yes |
| 2000 | 366 | 100% | Yes |
| 2001 | 363 | 99% | Yes |
| 2002 | 365 | 100% | Yes |
| 2003 | 364 | 100% | Yes |
| 2004 | 365 | 100% | Yes |
| 2005 | 364 | 100% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 364 | 100% | Yes |
| 2008 | 365 | 100% | Yes |
| 2009 | 364 | 100% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 364 | 100% | Yes |
| 2012 | 362 | 99% | Yes |
| 2013 | 360 | 99% | Yes |
| 2014 | 354 | 97% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 363 | 99% | Yes |
| 2017 | 359 | 98% | Yes |
| 2018 | 361 | 99% | Yes |
| 2019 | 359 | 98% | Yes |
| 2020 | 360 | 98% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 340 | 93% | Yes |
| 2024 | 350 | 96% | Yes |
| 2025 | 355 | 97% | Yes |
| 2026 | 220 | 60% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 2 July 2026 | Marshalltown, US | daily high min | 25.0 C (77.0 F) | 0.6 C (1.1 F) | 56 years | 27 of 100 (Routine) |
| 1 July 2026 | Marshalltown, US | daily high min | 25.6 C (78.1 F) | 1.2 C (2.2 F) | 56 years | 29 of 100 (Routine) |
| 22 June 2026 | Marshalltown, US | daily low max (Tie) | 17.8 C (64.0 F) | tie | 75 years | 8 of 100 (Routine) |
| 5 June 2026 | Marshalltown, US | daily rain | 59.9 mm (2.4 in) | 10.9 mm (0.4 in) | 79 years | 40 of 100 (Notable) |
| 15 April 2026 | Marshalltown, US | daily high max (Tie) | 30.6 C (87.1 F) | tie | 23 years | 4 of 100 (Routine) |
| 3 April 2026 | Marshalltown, US | daily rain | 19.8 mm (0.8 in) | 3.3 mm (0.13 in) | 61 years | 20 of 100 (Routine) |
| 2 April 2026 | Marshalltown, US | daily rain | 22.1 mm (0.9 in) | 2.3 mm (0.09 in) | 69 years | 20 of 100 (Routine) |
| 31 March 2026 | Marshalltown, US | daily high max | 29.4 C (84.9 F) | 3.8 C (6.8 F) | 105 years | 45 of 100 (Notable) |
| 22 March 2026 | Marshalltown, US | daily high max | 31.1 C (88.0 F) | 5.5 C (9.9 F) | 116 years | 47 of 100 (Notable) |
| 18 March 2026 | Marshalltown, US | daily low max | -4.4 C (24.1 F) | 0.5 C (0.9 F) | 36 years | 21 of 100 (Routine) |
| 7 March 2026 | Marshalltown, US | daily rain | 36.3 mm (1.4 in) | 19.8 mm (0.8 in) | 51 years | 48 of 100 (Notable) |
| 18 February 2026 | Marshalltown, US | daily high min (Tie) | 3.9 C (39.0 F) | tie | 44 years | 5 of 100 (Routine) |
| 17 February 2026 | Marshalltown, US | daily high max | 20.0 C (68.0 F) | 1.7 C (3.1 F) | 112 years | 42 of 100 (Notable) |
| 24 January 2026 | Marshalltown, US | daily low max | -21.7 C (-7.1 F) | 1.1 C (2.0 F) | 90 years | 38 of 100 (Notable) |
| 9 January 2026 | Marshalltown, US | daily rain | 20.6 mm (0.8 in) | 8.4 mm (0.33 in) | 96 years | 20 of 100 (Routine) |
| 28 December 2025 | Marshalltown, US | daily high min (Tie) | 2.2 C (36.0 F) | tie | 22 years | 4 of 100 (Routine) |
| 15 December 2025 | Marshalltown, US | daily low min (Tie) | -26.7 C (-16.1 F) | tie | 36 years | 5 of 100 (Routine) |
| 5 December 2025 | Marshalltown, US | daily low min | -23.9 C (-11.0 F) | 1.7 C (3.1 F) | 129 years | 42 of 100 (Notable) |
| 4 December 2025 | Marshalltown, US | daily low min | -24.4 C (-11.9 F) | 2.2 C (4.0 F) | 129 years | 43 of 100 (Notable) |
| 25 November 2025 | Marshalltown, US | daily high min | 6.1 C (43.0 F) | 1.7 C (3.1 F) | 24 years | 19 of 100 (Routine) |
Climate Trend
120 complete years, 1896 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1896 | 8.9 C | -0.17 C |
| 1897 | 8.8 C | -0.22 C |
| 1900 | 10.0 C | +1.00 C |
| 1901 | 9.8 C | +0.79 C |
| 1902 | 9.2 C | +0.16 C |
| 1903 | 8.7 C | -0.30 C |
| 1904 | 7.6 C | -1.43 C |
| 1905 | 8.4 C | -0.65 C |
| 1906 | 8.7 C | -0.34 C |
| 1907 | 8.1 C | -0.89 C |
| 1908 | 9.1 C | +0.09 C |
| 1910 | 8.9 C | -0.13 C |
| 1911 | 9.5 C | +0.48 C |
| 1912 | 8.0 C | -1.01 C |
| 1913 | 9.8 C | +0.77 C |
| 1914 | 10.0 C | +0.98 C |
| 1915 | 9.1 C | +0.06 C |
| 1916 | 8.6 C | -0.47 C |
| 1917 | 7.2 C | -1.80 C |
| 1918 | 9.4 C | +0.35 C |
| 1919 | 9.8 C | +0.73 C |
| 1921 | 11.7 C | +2.68 C |
| 1922 | 10.5 C | +1.52 C |
| 1923 | 10.0 C | +0.93 C |
| 1924 | 8.5 C | -0.56 C |
| 1925 | 9.8 C | +0.76 C |
| 1926 | 9.2 C | +0.15 C |
| 1927 | 9.6 C | +0.54 C |
| 1928 | 9.8 C | +0.76 C |
| 1929 | 8.2 C | -0.83 C |
| 1930 | 10.5 C | +1.45 C |
| 1931 | 12.2 C | +3.20 C |
| 1932 | 9.3 C | +0.31 C |
| 1933 | 10.7 C | +1.69 C |
| 1934 | 10.9 C | +1.92 C |
| 1935 | 8.7 C | -0.31 C |
| 1936 | 8.6 C | -0.47 C |
| 1937 | 8.1 C | -0.89 C |
| 1938 | 10.2 C | +1.14 C |
| 1939 | 10.4 C | +1.33 C |
| 1940 | 8.7 C | -0.28 C |
| 1941 | 10.6 C | +1.57 C |
| 1942 | 9.3 C | +0.25 C |
| 1943 | 8.5 C | -0.52 C |
| 1944 | 9.3 C | +0.24 C |
| 1945 | 8.4 C | -0.59 C |
| 1946 | 10.1 C | +1.11 C |
| 1947 | 9.3 C | +0.30 C |
| 1951 | 7.6 C | -1.40 C |
| 1952 | 9.4 C | +0.40 C |
| 1953 | 10.1 C | +1.03 C |
| 1954 | 10.1 C | +1.09 C |
| 1955 | 9.3 C | +0.31 C |
| 1956 | 9.4 C | +0.36 C |
| 1957 | 9.2 C | +0.19 C |
| 1958 | 8.6 C | -0.39 C |
| 1959 | 8.9 C | -0.17 C |
| 1960 | 8.2 C | -0.80 C |
| 1961 | 8.7 C | -0.35 C |
| 1962 | 8.2 C | -0.85 C |
| 1963 | 9.0 C | +0.01 C |
| 1964 | 9.5 C | +0.48 C |
| 1965 | 8.5 C | -0.53 C |
| 1966 | 8.4 C | -0.61 C |
| 1967 | 8.6 C | -0.44 C |
| 1969 | 8.5 C | -0.55 C |
| 1970 | 9.0 C | +0.02 C |
| 1971 | 9.1 C | +0.03 C |
| 1972 | 7.8 C | -1.23 C |
| 1973 | 9.6 C | +0.58 C |
| 1974 | 8.7 C | -0.30 C |
| 1975 | 8.4 C | -0.63 C |
| 1976 | 8.2 C | -0.80 C |
| 1977 | 8.9 C | -0.12 C |
| 1979 | 7.1 C | -1.95 C |
| 1980 | 8.5 C | -0.56 C |
| 1981 | 8.9 C | -0.15 C |
| 1982 | 7.6 C | -1.43 C |
| 1983 | 8.7 C | -0.37 C |
| 1984 | 8.8 C | -0.27 C |
| 1985 | 7.3 C | -1.71 C |
| 1986 | 8.7 C | -0.36 C |
| 1987 | 10.2 C | +1.19 C |
| 1988 | 9.0 C | +0.00 C |
| 1989 | 7.9 C | -1.15 C |
| 1990 | 9.8 C | +0.76 C |
| 1991 | 9.4 C | +0.42 C |
| 1992 | 8.7 C | -0.29 C |
| 1993 | 7.8 C | -1.20 C |
| 1994 | 8.5 C | -0.55 C |
| 1995 | 8.5 C | -0.52 C |
| 1996 | 7.5 C | -1.52 C |
| 1997 | 8.8 C | -0.27 C |
| 1998 | 10.7 C | +1.70 C |
| 1999 | 9.5 C | +0.52 C |
| 2000 | 8.9 C | -0.16 C |
| 2001 | 9.0 C | +0.01 C |
| 2002 | 9.2 C | +0.14 C |
| 2003 | 8.3 C | -0.76 C |
| 2004 | 8.7 C | -0.35 C |
| 2005 | 9.3 C | +0.25 C |
| 2006 | 9.9 C | +0.84 C |
| 2007 | 9.2 C | +0.13 C |
| 2008 | 7.3 C | -1.68 C |
| 2009 | 7.8 C | -1.19 C |
| 2010 | 8.5 C | -0.52 C |
| 2011 | 8.8 C | -0.26 C |
| 2012 | 10.7 C | +1.63 C |
| 2013 | 7.7 C | -1.34 C |
| 2014 | 7.2 C | -1.82 C |
| 2015 | 9.3 C | +0.26 C |
| 2016 | 10.2 C | +1.17 C |
| 2017 | 9.8 C | +0.80 C |
| 2018 | 8.4 C | -0.65 C |
| 2019 | 8.0 C | -1.07 C |
| 2020 | 9.2 C | +0.18 C |
| 2021 | 9.6 C | +0.58 C |
| 2022 | 8.1 C | -0.92 C |
| 2024 | 10.3 C | +1.26 C |
| 2025 | 9.2 C | +0.18 C |
The annual mean temperature here has fallen by 0.05 C (0.00 to 0.09) per decade over 1896 to 2025. In Fahrenheit: 0.09 F (0.01 to 0.17) per decade. The slope is a straight line fitted to 120 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.05 C (-0.09 to 0.00) per decade | -0.09 F (-0.17 to -0.01) per decade | 1896 to 2025 | 120 | Fall |
| Mean daily maximum | -0.09 C (-0.14 to -0.04) per decade | -0.2 F (-0.3 to -0.1) per decade | 1896 to 2025 | 120 | Fall |
| Mean daily minimum | 0.00 C (-0.05 to 0.05) per decade | -0.01 F (-0.10 to 0.09) per decade | 1896 to 2025 | 120 | Not clearly different from zero |
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1893 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 44.4 C (111.9 F) | 1936 | 36.1 C (97.0 F) | 134 |
| Coldest night (TNn) | -37.2 C (-35.0 F) | 1996 | -27.8 C (-18.0 F) | 134 |
| Wettest day (Rx1day) | 167.1 mm (6.6 in) | 1962 | 61.0 mm (2.4 in) | 134 |
| Wettest five days (Rx5day) | 250.5 mm (9.9 in) | 2013 | 95.6 mm (3.8 in) | 134 |
| Longest dry spell (CDD) | 63 days | 1952 | 23 days | 134 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1893 | 33.3 C (91.9 F) |
| 1894 | 38.9 C (102.0 F) |
| 1895 | 35.6 C (96.1 F) |
| 1896 | 37.2 C (99.0 F) |
| 1897 | 37.2 C (99.0 F) |
| 1898 | 37.2 C (99.0 F) |
| 1899 | 37.8 C (100.0 F) |
| 1900 | 35.0 C (95.0 F) |
| 1901 | 42.2 C (108.0 F) |
| 1902 | 35.6 C (96.1 F) |
| 1903 | 35.6 C (96.1 F) |
| 1904 | 37.8 C (100.0 F) |
| 1905 | 39.4 C (102.9 F) |
| 1906 | 35.6 C (96.1 F) |
| 1907 | 33.9 C (93.0 F) |
| 1908 | 35.0 C (95.0 F) |
| 1909 | 36.7 C (98.1 F) |
| 1910 | 37.8 C (100.0 F) |
| 1911 | 40.6 C (105.1 F) |
| 1912 | 38.9 C (102.0 F) |
| 1913 | 40.0 C (104.0 F) |
| 1914 | 38.3 C (100.9 F) |
| 1915 | 32.2 C (90.0 F) |
| 1916 | 38.9 C (102.0 F) |
| 1917 | 38.9 C (102.0 F) |
| 1918 | 40.0 C (104.0 F) |
| 1919 | 37.8 C (100.0 F) |
| 1920 | 35.6 C (96.1 F) |
| 1921 | 37.8 C (100.0 F) |
| 1922 | 37.2 C (99.0 F) |
| 1923 | 36.7 C (98.1 F) |
| 1924 | 36.7 C (98.1 F) |
| 1925 | 40.6 C (105.1 F) |
| 1926 | 37.8 C (100.0 F) |
| 1927 | 37.2 C (99.0 F) |
| 1928 | 36.1 C (97.0 F) |
| 1929 | 34.4 C (93.9 F) |
| 1930 | 41.7 C (107.1 F) |
| 1931 | 39.4 C (102.9 F) |
| 1932 | 37.2 C (99.0 F) |
| 1933 | 39.4 C (102.9 F) |
| 1934 | 42.8 C (109.0 F) |
| 1935 | 36.7 C (98.1 F) |
| 1936 | 44.4 C (111.9 F) |
| 1937 | 38.9 C (102.0 F) |
| 1938 | 36.7 C (98.1 F) |
| 1939 | 39.4 C (102.9 F) |
| 1940 | 41.1 C (106.0 F) |
| 1941 | 38.3 C (100.9 F) |
| 1942 | 36.1 C (97.0 F) |
| 1943 | 35.6 C (96.1 F) |
| 1944 | 36.7 C (98.1 F) |
| 1945 | 37.2 C (99.0 F) |
| 1946 | 35.6 C (96.1 F) |
| 1947 | 40.0 C (104.0 F) |
| 1948 | 33.3 C (91.9 F) |
| 1949 | 36.1 C (97.0 F) |
| 1950 | 34.4 C (93.9 F) |
| 1951 | 35.0 C (95.0 F) |
| 1952 | 36.7 C (98.1 F) |
| 1953 | 36.1 C (97.0 F) |
| 1954 | 37.8 C (100.0 F) |
| 1955 | 40.0 C (104.0 F) |
| 1956 | 37.8 C (100.0 F) |
| 1957 | 37.8 C (100.0 F) |
| 1958 | 33.9 C (93.0 F) |
| 1959 | 35.0 C (95.0 F) |
| 1960 | 35.0 C (95.0 F) |
| 1961 | 34.4 C (93.9 F) |
| 1962 | 33.9 C (93.0 F) |
| 1963 | 36.1 C (97.0 F) |
| 1964 | 36.1 C (97.0 F) |
| 1965 | 36.7 C (98.1 F) |
| 1966 | 37.2 C (99.0 F) |
| 1967 | 34.4 C (93.9 F) |
| 1968 | 35.6 C (96.1 F) |
| 1969 | 33.9 C (93.0 F) |
| 1970 | 37.2 C (99.0 F) |
| 1971 | 36.1 C (97.0 F) |
| 1972 | 35.0 C (95.0 F) |
| 1973 | 34.4 C (93.9 F) |
| 1974 | 36.1 C (97.0 F) |
| 1975 | 34.4 C (93.9 F) |
| 1976 | 35.6 C (96.1 F) |
| 1977 | 39.4 C (102.9 F) |
| 1978 | 33.9 C (93.0 F) |
| 1979 | 34.4 C (93.9 F) |
| 1980 | 38.3 C (100.9 F) |
| 1981 | 35.6 C (96.1 F) |
| 1982 | 35.6 C (96.1 F) |
| 1983 | 37.8 C (100.0 F) |
| 1984 | 36.7 C (98.1 F) |
| 1985 | 37.2 C (99.0 F) |
| 1986 | 35.0 C (95.0 F) |
| 1987 | 37.8 C (100.0 F) |
| 1988 | 38.9 C (102.0 F) |
| 1989 | 37.2 C (99.0 F) |
| 1990 | 36.1 C (97.0 F) |
| 1991 | 35.6 C (96.1 F) |
| 1992 | 31.7 C (89.1 F) |
| 1993 | 32.2 C (90.0 F) |
| 1994 | 32.8 C (91.0 F) |
| 1995 | 37.2 C (99.0 F) |
| 1996 | 34.4 C (93.9 F) |
| 1997 | 35.6 C (96.1 F) |
| 1998 | 35.6 C (96.1 F) |
| 1999 | 36.7 C (98.1 F) |
| 2000 | 36.1 C (97.0 F) |
| 2001 | 35.0 C (95.0 F) |
| 2002 | 34.4 C (93.9 F) |
| 2003 | 35.0 C (95.0 F) |
| 2004 | 32.2 C (90.0 F) |
| 2005 | 35.0 C (95.0 F) |
| 2006 | 36.7 C (98.1 F) |
| 2007 | 34.4 C (93.9 F) |
| 2008 | 33.3 C (91.9 F) |
| 2009 | 33.9 C (93.0 F) |
| 2010 | 34.4 C (93.9 F) |
| 2011 | 35.6 C (96.1 F) |
| 2012 | 38.9 C (102.0 F) |
| 2013 | 36.7 C (98.1 F) |
| 2014 | 32.2 C (90.0 F) |
| 2015 | 33.9 C (93.0 F) |
| 2016 | 33.9 C (93.0 F) |
| 2017 | 35.6 C (96.1 F) |
| 2018 | 36.7 C (98.1 F) |
| 2019 | 34.4 C (93.9 F) |
| 2020 | 33.9 C (93.0 F) |
| 2021 | 36.7 C (98.1 F) |
| 2022 | 35.0 C (95.0 F) |
| 2023 | 36.1 C (97.0 F) |
| 2024 | 34.4 C (93.9 F) |
| 2025 | 33.9 C (93.0 F) |
| 2026 | 35.0 C (95.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1893 | -27.2 C (-17.0 F) |
| 1894 | -4.4 C (24.1 F) |
| 1895 | -30.0 C (-22.0 F) |
| 1896 | -25.0 C (-13.0 F) |
| 1897 | -28.9 C (-20.0 F) |
| 1898 | -23.3 C (-9.9 F) |
| 1899 | -33.3 C (-27.9 F) |
| 1900 | -25.6 C (-14.1 F) |
| 1901 | -28.9 C (-20.0 F) |
| 1902 | -30.6 C (-23.1 F) |
| 1903 | -25.6 C (-14.1 F) |
| 1904 | -30.0 C (-22.0 F) |
| 1905 | -34.4 C (-29.9 F) |
| 1906 | -26.1 C (-15.0 F) |
| 1907 | -27.8 C (-18.0 F) |
| 1908 | -25.0 C (-13.0 F) |
| 1909 | -29.4 C (-20.9 F) |
| 1910 | -30.0 C (-22.0 F) |
| 1911 | -30.0 C (-22.0 F) |
| 1912 | -35.0 C (-31.0 F) |
| 1913 | -25.6 C (-14.1 F) |
| 1914 | -31.1 C (-24.0 F) |
| 1915 | -29.4 C (-20.9 F) |
| 1916 | -31.1 C (-24.0 F) |
| 1917 | -30.6 C (-23.1 F) |
| 1918 | -31.7 C (-25.1 F) |
| 1919 | -32.2 C (-26.0 F) |
| 1920 | -24.4 C (-11.9 F) |
| 1921 | -24.4 C (-11.9 F) |
| 1922 | -25.0 C (-13.0 F) |
| 1923 | -25.6 C (-14.1 F) |
| 1924 | -31.1 C (-24.0 F) |
| 1925 | -24.4 C (-11.9 F) |
| 1926 | -22.8 C (-9.0 F) |
| 1927 | -23.3 C (-9.9 F) |
| 1928 | -25.6 C (-14.1 F) |
| 1929 | -27.2 C (-17.0 F) |
| 1930 | -30.6 C (-23.1 F) |
| 1931 | -18.3 C (-0.9 F) |
| 1932 | -26.1 C (-15.0 F) |
| 1933 | -30.6 C (-23.1 F) |
| 1934 | -25.0 C (-13.0 F) |
| 1935 | -27.2 C (-17.0 F) |
| 1936 | -35.6 C (-32.1 F) |
| 1937 | -27.2 C (-17.0 F) |
| 1938 | -31.7 C (-25.1 F) |
| 1939 | -24.4 C (-11.9 F) |
| 1940 | -28.9 C (-20.0 F) |
| 1941 | -22.2 C (-8.0 F) |
| 1942 | -33.9 C (-29.0 F) |
| 1943 | -29.4 C (-20.9 F) |
| 1944 | -31.7 C (-25.1 F) |
| 1945 | -27.8 C (-18.0 F) |
| 1946 | -28.3 C (-18.9 F) |
| 1947 | -32.8 C (-27.0 F) |
| 1948 | -28.9 C (-20.0 F) |
| 1949 | -24.4 C (-11.9 F) |
| 1950 | -30.0 C (-22.0 F) |
| 1951 | -29.4 C (-20.9 F) |
| 1952 | -24.4 C (-11.9 F) |
| 1953 | -26.1 C (-15.0 F) |
| 1954 | -26.7 C (-16.1 F) |
| 1955 | -28.3 C (-18.9 F) |
| 1956 | -31.1 C (-24.0 F) |
| 1957 | -31.1 C (-24.0 F) |
| 1958 | -29.4 C (-20.9 F) |
| 1959 | -27.8 C (-18.0 F) |
| 1960 | -26.1 C (-15.0 F) |
| 1961 | -27.2 C (-17.0 F) |
| 1962 | -35.6 C (-32.1 F) |
| 1963 | -30.0 C (-22.0 F) |
| 1964 | -24.4 C (-11.9 F) |
| 1965 | -25.0 C (-13.0 F) |
| 1966 | -30.6 C (-23.1 F) |
| 1967 | -30.0 C (-22.0 F) |
| 1968 | -26.7 C (-16.1 F) |
| 1969 | -25.0 C (-13.0 F) |
| 1970 | -32.2 C (-26.0 F) |
| 1971 | -28.3 C (-18.9 F) |
| 1972 | -33.3 C (-27.9 F) |
| 1973 | -23.9 C (-11.0 F) |
| 1974 | -33.3 C (-27.9 F) |
| 1975 | -26.1 C (-15.0 F) |
| 1976 | -26.7 C (-16.1 F) |
| 1977 | -29.4 C (-20.9 F) |
| 1978 | -27.2 C (-17.0 F) |
| 1979 | -33.9 C (-29.0 F) |
| 1980 | -25.0 C (-13.0 F) |
| 1981 | -27.8 C (-18.0 F) |
| 1982 | -32.8 C (-27.0 F) |
| 1983 | -30.6 C (-23.1 F) |
| 1984 | -27.8 C (-18.0 F) |
| 1985 | -33.3 C (-27.9 F) |
| 1986 | -28.3 C (-18.9 F) |
| 1987 | -22.2 C (-8.0 F) |
| 1988 | -30.0 C (-22.0 F) |
| 1989 | -32.2 C (-26.0 F) |
| 1990 | -25.6 C (-14.1 F) |
| 1991 | -28.9 C (-20.0 F) |
| 1992 | -22.8 C (-9.0 F) |
| 1993 | -27.8 C (-18.0 F) |
| 1994 | -33.3 C (-27.9 F) |
| 1995 | -22.2 C (-8.0 F) |
| 1996 | -37.2 C (-35.0 F) |
| 1997 | -26.7 C (-16.1 F) |
| 1998 | -25.6 C (-14.1 F) |
| 1999 | -32.2 C (-26.0 F) |
| 2000 | -32.2 C (-26.0 F) |
| 2001 | -23.3 C (-9.9 F) |
| 2002 | -21.1 C (-6.0 F) |
| 2003 | -25.0 C (-13.0 F) |
| 2004 | -25.0 C (-13.0 F) |
| 2005 | -27.8 C (-18.0 F) |
| 2006 | -26.7 C (-16.1 F) |
| 2007 | -26.1 C (-15.0 F) |
| 2008 | -30.0 C (-22.0 F) |
| 2009 | -36.7 C (-34.1 F) |
| 2010 | -27.8 C (-18.0 F) |
| 2011 | -26.1 C (-15.0 F) |
| 2012 | -21.7 C (-7.1 F) |
| 2013 | -29.4 C (-20.9 F) |
| 2014 | -32.2 C (-26.0 F) |
| 2015 | -29.4 C (-20.9 F) |
| 2016 | -26.1 C (-15.0 F) |
| 2017 | -25.0 C (-13.0 F) |
| 2018 | -31.7 C (-25.1 F) |
| 2019 | -33.3 C (-27.9 F) |
| 2020 | -23.9 C (-11.0 F) |
| 2021 | -31.1 C (-24.0 F) |
| 2022 | -30.0 C (-22.0 F) |
| 2023 | -27.2 C (-17.0 F) |
| 2024 | -27.8 C (-18.0 F) |
| 2025 | -26.7 C (-16.1 F) |
| 2026 | -26.7 C (-16.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1893 | 45.5 mm (1.8 in) |
| 1894 | 21.6 mm (0.9 in) |
| 1895 | 56.6 mm (2.2 in) |
| 1896 | 53.8 mm (2.1 in) |
| 1897 | 35.3 mm (1.4 in) |
| 1898 | 51.6 mm (2.0 in) |
| 1899 | 55.9 mm (2.2 in) |
| 1900 | 84.3 mm (3.3 in) |
| 1901 | 39.4 mm (1.6 in) |
| 1902 | 69.1 mm (2.7 in) |
| 1903 | 49.8 mm (2.0 in) |
| 1904 | 53.8 mm (2.1 in) |
| 1905 | 54.4 mm (2.1 in) |
| 1906 | 53.3 mm (2.1 in) |
| 1907 | 71.4 mm (2.8 in) |
| 1908 | 31.5 mm (1.2 in) |
| 1909 | 52.1 mm (2.1 in) |
| 1910 | 39.6 mm (1.6 in) |
| 1911 | 104.1 mm (4.1 in) |
| 1912 | 61.0 mm (2.4 in) |
| 1913 | 53.3 mm (2.1 in) |
| 1914 | 104.1 mm (4.1 in) |
| 1915 | 104.1 mm (4.1 in) |
| 1916 | 45.0 mm (1.8 in) |
| 1917 | 44.5 mm (1.8 in) |
| 1918 | 56.6 mm (2.2 in) |
| 1919 | 55.4 mm (2.2 in) |
| 1920 | 47.5 mm (1.9 in) |
| 1921 | 71.6 mm (2.8 in) |
| 1922 | 63.2 mm (2.5 in) |
| 1923 | 40.9 mm (1.6 in) |
| 1924 | 124.5 mm (4.9 in) |
| 1925 | 63.8 mm (2.5 in) |
| 1926 | 128.8 mm (5.1 in) |
| 1927 | 51.6 mm (2.0 in) |
| 1928 | 73.2 mm (2.9 in) |
| 1929 | 126.2 mm (5.0 in) |
| 1930 | 43.7 mm (1.7 in) |
| 1931 | 63.2 mm (2.5 in) |
| 1932 | 76.2 mm (3.0 in) |
| 1933 | 76.2 mm (3.0 in) |
| 1934 | 50.8 mm (2.0 in) |
| 1935 | 61.5 mm (2.4 in) |
| 1936 | 69.3 mm (2.7 in) |
| 1937 | 41.1 mm (1.6 in) |
| 1938 | 56.4 mm (2.2 in) |
| 1939 | 42.4 mm (1.7 in) |
| 1940 | 54.6 mm (2.1 in) |
| 1941 | 80.5 mm (3.2 in) |
| 1942 | 48.8 mm (1.9 in) |
| 1943 | 41.1 mm (1.6 in) |
| 1944 | 85.1 mm (3.4 in) |
| 1945 | 57.2 mm (2.3 in) |
| 1946 | 69.3 mm (2.7 in) |
| 1947 | 114.3 mm (4.5 in) |
| 1948 | 51.1 mm (2.0 in) |
| 1949 | 33.5 mm (1.3 in) |
| 1950 | 58.9 mm (2.3 in) |
| 1951 | 66.0 mm (2.6 in) |
| 1952 | 50.3 mm (2.0 in) |
| 1953 | 61.0 mm (2.4 in) |
| 1954 | 52.8 mm (2.1 in) |
| 1955 | 44.2 mm (1.7 in) |
| 1956 | 49.0 mm (1.9 in) |
| 1957 | 111.8 mm (4.4 in) |
| 1958 | 76.2 mm (3.0 in) |
| 1959 | 46.7 mm (1.8 in) |
| 1960 | 95.5 mm (3.8 in) |
| 1961 | 56.9 mm (2.2 in) |
| 1962 | 167.1 mm (6.6 in) |
| 1963 | 66.0 mm (2.6 in) |
| 1964 | 49.5 mm (1.9 in) |
| 1965 | 63.5 mm (2.5 in) |
| 1966 | 55.9 mm (2.2 in) |
| 1967 | 31.8 mm (1.3 in) |
| 1968 | 62.2 mm (2.4 in) |
| 1969 | 57.2 mm (2.3 in) |
| 1970 | 95.3 mm (3.8 in) |
| 1971 | 48.5 mm (1.9 in) |
| 1972 | 85.6 mm (3.4 in) |
| 1973 | 42.4 mm (1.7 in) |
| 1974 | 97.0 mm (3.8 in) |
| 1975 | 38.9 mm (1.5 in) |
| 1976 | 65.0 mm (2.6 in) |
| 1977 | 140.7 mm (5.5 in) |
| 1978 | 61.7 mm (2.4 in) |
| 1979 | 87.6 mm (3.4 in) |
| 1980 | 106.7 mm (4.2 in) |
| 1981 | 61.7 mm (2.4 in) |
| 1982 | 103.4 mm (4.1 in) |
| 1983 | 74.4 mm (2.9 in) |
| 1984 | 65.8 mm (2.6 in) |
| 1985 | 45.2 mm (1.8 in) |
| 1986 | 71.1 mm (2.8 in) |
| 1987 | 97.0 mm (3.8 in) |
| 1988 | 50.3 mm (2.0 in) |
| 1989 | 46.0 mm (1.8 in) |
| 1990 | 72.4 mm (2.9 in) |
| 1991 | 66.0 mm (2.6 in) |
| 1992 | 56.1 mm (2.2 in) |
| 1993 | 112.5 mm (4.4 in) |
| 1994 | 64.5 mm (2.5 in) |
| 1995 | 48.3 mm (1.9 in) |
| 1996 | 92.7 mm (3.6 in) |
| 1997 | 88.9 mm (3.5 in) |
| 1998 | 59.9 mm (2.4 in) |
| 1999 | 68.3 mm (2.7 in) |
| 2000 | 96.5 mm (3.8 in) |
| 2001 | 54.6 mm (2.1 in) |
| 2002 | 47.2 mm (1.9 in) |
| 2003 | 96.0 mm (3.8 in) |
| 2004 | 105.4 mm (4.1 in) |
| 2005 | 55.9 mm (2.2 in) |
| 2006 | 62.2 mm (2.4 in) |
| 2007 | 61.2 mm (2.4 in) |
| 2008 | 91.7 mm (3.6 in) |
| 2009 | 55.4 mm (2.2 in) |
| 2010 | 55.4 mm (2.2 in) |
| 2011 | 53.3 mm (2.1 in) |
| 2012 | 53.3 mm (2.1 in) |
| 2013 | 99.6 mm (3.9 in) |
| 2014 | 85.9 mm (3.4 in) |
| 2015 | 66.0 mm (2.6 in) |
| 2016 | 64.0 mm (2.5 in) |
| 2017 | 32.0 mm (1.3 in) |
| 2018 | 73.7 mm (2.9 in) |
| 2019 | 46.7 mm (1.8 in) |
| 2020 | 50.5 mm (2.0 in) |
| 2021 | 71.6 mm (2.8 in) |
| 2022 | 71.6 mm (2.8 in) |
| 2023 | 29.7 mm (1.2 in) |
| 2024 | 51.6 mm (2.0 in) |
| 2025 | 64.8 mm (2.6 in) |
| 2026 | 87.1 mm (3.4 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1893 | 52.0 mm (2.0 in) |
| 1894 | 28.2 mm (1.1 in) |
| 1895 | 66.5 mm (2.6 in) |
| 1896 | 113.0 mm (4.4 in) |
| 1897 | 76.5 mm (3.0 in) |
| 1898 | 96.8 mm (3.8 in) |
| 1899 | 109.5 mm (4.3 in) |
| 1900 | 124.9 mm (4.9 in) |
| 1901 | 58.0 mm (2.3 in) |
| 1902 | 132.1 mm (5.2 in) |
| 1903 | 117.9 mm (4.6 in) |
| 1904 | 106.9 mm (4.2 in) |
| 1905 | 79.3 mm (3.1 in) |
| 1906 | 79.3 mm (3.1 in) |
| 1907 | 87.1 mm (3.4 in) |
| 1908 | 76.4 mm (3.0 in) |
| 1909 | 90.6 mm (3.6 in) |
| 1910 | 61.8 mm (2.4 in) |
| 1911 | 132.1 mm (5.2 in) |
| 1912 | 98.9 mm (3.9 in) |
| 1913 | 74.7 mm (2.9 in) |
| 1914 | 183.9 mm (7.2 in) |
| 1915 | 131.6 mm (5.2 in) |
| 1916 | 47.3 mm (1.9 in) |
| 1917 | 113.8 mm (4.5 in) |
| 1918 | 133.7 mm (5.3 in) |
| 1919 | 116.8 mm (4.6 in) |
| 1920 | 69.1 mm (2.7 in) |
| 1921 | 110.4 mm (4.3 in) |
| 1922 | 98.8 mm (3.9 in) |
| 1923 | 55.4 mm (2.2 in) |
| 1924 | 134.7 mm (5.3 in) |
| 1925 | 101.7 mm (4.0 in) |
| 1926 | 148.6 mm (5.9 in) |
| 1927 | 66.1 mm (2.6 in) |
| 1928 | 86.4 mm (3.4 in) |
| 1929 | 132.8 mm (5.2 in) |
| 1930 | 50.1 mm (2.0 in) |
| 1931 | 98.9 mm (3.9 in) |
| 1932 | 88.1 mm (3.5 in) |
| 1933 | 142.9 mm (5.6 in) |
| 1934 | 69.7 mm (2.7 in) |
| 1935 | 93.6 mm (3.7 in) |
| 1936 | 98.3 mm (3.9 in) |
| 1937 | 56.2 mm (2.2 in) |
| 1938 | 79.5 mm (3.1 in) |
| 1939 | 50.6 mm (2.0 in) |
| 1940 | 70.1 mm (2.8 in) |
| 1941 | 105.7 mm (4.2 in) |
| 1942 | 84.9 mm (3.3 in) |
| 1943 | 84.9 mm (3.3 in) |
| 1944 | 184.1 mm (7.2 in) |
| 1945 | 84.4 mm (3.3 in) |
| 1946 | 88.1 mm (3.5 in) |
| 1947 | 62.6 mm (2.5 in) |
| 1948 | 67.6 mm (2.7 in) |
| 1949 | 66.0 mm (2.6 in) |
| 1950 | 95.5 mm (3.8 in) |
| 1951 | 125.5 mm (4.9 in) |
| 1952 | 86.8 mm (3.4 in) |
| 1953 | 69.9 mm (2.8 in) |
| 1954 | 98.0 mm (3.9 in) |
| 1955 | 69.9 mm (2.8 in) |
| 1956 | 63.5 mm (2.5 in) |
| 1957 | 122.5 mm (4.8 in) |
| 1958 | 102.6 mm (4.0 in) |
| 1959 | 81.6 mm (3.2 in) |
| 1960 | 128.5 mm (5.1 in) |
| 1961 | 117.1 mm (4.6 in) |
| 1962 | 169.9 mm (6.7 in) |
| 1963 | 91.9 mm (3.6 in) |
| 1964 | 82.5 mm (3.2 in) |
| 1965 | 88.2 mm (3.5 in) |
| 1966 | 100.3 mm (3.9 in) |
| 1967 | 84.6 mm (3.3 in) |
| 1968 | 63.0 mm (2.5 in) |
| 1969 | 92.0 mm (3.6 in) |
| 1970 | 145.7 mm (5.7 in) |
| 1971 | 74.5 mm (2.9 in) |
| 1972 | 117.9 mm (4.6 in) |
| 1973 | 74.2 mm (2.9 in) |
| 1974 | 165.9 mm (6.5 in) |
| 1975 | 75.8 mm (3.0 in) |
| 1976 | 104.1 mm (4.1 in) |
| 1977 | 145.8 mm (5.7 in) |
| 1978 | 84.3 mm (3.3 in) |
| 1979 | 152.3 mm (6.0 in) |
| 1980 | 123.9 mm (4.9 in) |
| 1981 | 111.3 mm (4.4 in) |
| 1982 | 112.1 mm (4.4 in) |
| 1983 | 122.1 mm (4.8 in) |
| 1984 | 95.3 mm (3.8 in) |
| 1985 | 88.1 mm (3.5 in) |
| 1986 | 92.7 mm (3.6 in) |
| 1987 | 134.6 mm (5.3 in) |
| 1988 | 71.4 mm (2.8 in) |
| 1989 | 71.2 mm (2.8 in) |
| 1990 | 122.9 mm (4.8 in) |
| 1991 | 84.0 mm (3.3 in) |
| 1992 | 137.7 mm (5.4 in) |
| 1993 | 162.0 mm (6.4 in) |
| 1994 | 126.8 mm (5.0 in) |
| 1995 | 74.4 mm (2.9 in) |
| 1996 | 103.9 mm (4.1 in) |
| 1997 | 93.7 mm (3.7 in) |
| 1998 | 121.7 mm (4.8 in) |
| 1999 | 83.8 mm (3.3 in) |
| 2000 | 190.3 mm (7.5 in) |
| 2001 | 72.3 mm (2.8 in) |
| 2002 | 75.1 mm (3.0 in) |
| 2003 | 134.3 mm (5.3 in) |
| 2004 | 153.4 mm (6.0 in) |
| 2005 | 80.3 mm (3.2 in) |
| 2006 | 97.2 mm (3.8 in) |
| 2007 | 121.4 mm (4.8 in) |
| 2008 | 133.1 mm (5.2 in) |
| 2009 | 121.3 mm (4.8 in) |
| 2010 | 113.3 mm (4.5 in) |
| 2011 | 46.5 mm (1.8 in) |
| 2012 | 65.2 mm (2.6 in) |
| 2013 | 250.5 mm (9.9 in) |
| 2014 | 130.8 mm (5.1 in) |
| 2015 | 107.6 mm (4.2 in) |
| 2016 | 77.3 mm (3.0 in) |
| 2017 | 70.6 mm (2.8 in) |
| 2018 | 137.2 mm (5.4 in) |
| 2019 | 95.7 mm (3.8 in) |
| 2020 | 92.8 mm (3.7 in) |
| 2021 | 103.9 mm (4.1 in) |
| 2022 | 73.6 mm (2.9 in) |
| 2023 | 48.0 mm (1.9 in) |
| 2024 | 130.3 mm (5.1 in) |
| 2025 | 100.3 mm (3.9 in) |
| 2026 | 104.9 mm (4.1 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1893 | 28 days |
| 1894 | 13 days |
| 1895 | 40 days |
| 1896 | 23 days |
| 1897 | 23 days |
| 1898 | 18 days |
| 1899 | 25 days |
| 1900 | 19 days |
| 1901 | 20 days |
| 1902 | 21 days |
| 1903 | 36 days |
| 1904 | 30 days |
| 1905 | 22 days |
| 1906 | 26 days |
| 1907 | 20 days |
| 1908 | 27 days |
| 1909 | 21 days |
| 1910 | 22 days |
| 1911 | 19 days |
| 1912 | 25 days |
| 1913 | 28 days |
| 1914 | 23 days |
| 1915 | 17 days |
| 1916 | 30 days |
| 1917 | 18 days |
| 1918 | 19 days |
| 1919 | 31 days |
| 1920 | 20 days |
| 1921 | 19 days |
| 1922 | 22 days |
| 1923 | 25 days |
| 1924 | 21 days |
| 1925 | 22 days |
| 1926 | 29 days |
| 1927 | 30 days |
| 1928 | 27 days |
| 1929 | 15 days |
| 1930 | 27 days |
| 1931 | 44 days |
| 1932 | 23 days |
| 1933 | 26 days |
| 1934 | 34 days |
| 1935 | 18 days |
| 1936 | 23 days |
| 1937 | 20 days |
| 1938 | 19 days |
| 1939 | 21 days |
| 1940 | 21 days |
| 1941 | 17 days |
| 1942 | 37 days |
| 1943 | 25 days |
| 1944 | 19 days |
| 1945 | 22 days |
| 1946 | 28 days |
| 1947 | 36 days |
| 1948 | 33 days |
| 1949 | 21 days |
| 1950 | 29 days |
| 1951 | 17 days |
| 1952 | 63 days |
| 1953 | 45 days |
| 1954 | 34 days |
| 1955 | 42 days |
| 1956 | 30 days |
| 1957 | 28 days |
| 1958 | 38 days |
| 1959 | 25 days |
| 1960 | 24 days |
| 1961 | 17 days |
| 1962 | 35 days |
| 1963 | 21 days |
| 1964 | 30 days |
| 1965 | 21 days |
| 1966 | 23 days |
| 1967 | 20 days |
| 1968 | 13 days |
| 1969 | 34 days |
| 1970 | 20 days |
| 1971 | 31 days |
| 1972 | 14 days |
| 1973 | 19 days |
| 1974 | 20 days |
| 1975 | 23 days |
| 1976 | 30 days |
| 1977 | 20 days |
| 1978 | 24 days |
| 1979 | 30 days |
| 1980 | 31 days |
| 1981 | 25 days |
| 1982 | 19 days |
| 1983 | 23 days |
| 1984 | 27 days |
| 1985 | 17 days |
| 1986 | 23 days |
| 1987 | 34 days |
| 1988 | 43 days |
| 1989 | 26 days |
| 1990 | 19 days |
| 1991 | 36 days |
| 1992 | 16 days |
| 1993 | 22 days |
| 1994 | 37 days |
| 1995 | 25 days |
| 1996 | 30 days |
| 1997 | 15 days |
| 1998 | 50 days |
| 1999 | 34 days |
| 2000 | 17 days |
| 2001 | 14 days |
| 2002 | 36 days |
| 2003 | 20 days |
| 2004 | 19 days |
| 2005 | 15 days |
| 2006 | 18 days |
| 2007 | 30 days |
| 2008 | 24 days |
| 2009 | 30 days |
| 2010 | 17 days |
| 2011 | 3 days |
| 2012 | 19 days |
| 2013 | 16 days |
| 2014 | 22 days |
| 2015 | 26 days |
| 2016 | 20 days |
| 2017 | 35 days |
| 2018 | 24 days |
| 2019 | 13 days |
| 2020 | 19 days |
| 2021 | 23 days |
| 2022 | 26 days |
| 2023 | 24 days |
| 2024 | 24 days |
| 2025 | 39 days |
| 2026 | 22 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
120 years with a frostAcross 120 years with a frost, the median last spring frost at Marshalltown falls on 29 April and the median first autumn frost on 3 October, which leaves a median of 158 days between them.
In 1995 to 2025 the median growing season was 159 days. That is 4 days more than in 1896 to 1929.
Fitted over all years, the growing season changes by +0.7 days per decade at this station.
| Measure | Median, all years | Earliest period (1896 to 1929) | Recent period (1995 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 29 April | 2 May | 28 April | 4 days earlier | -0.4 days per decade |
| First autumn frost | 3 October | 3 October | 9 October | 6 days later | +0.3 days per decade |
| Growing days | 158 days | 155 days | 159 days | 4 days more | +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
127 years, 1895 to 2025A day with at least 61.1 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 154.1 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 | 61.1 mm (2.4 in) | |
| 5 years | 82.0 mm (3.2 in) | |
| 10 years | 97.2 mm (3.8 in) | |
| 25 years | 118.5 mm (4.7 in) | |
| 50 years | 135.7 mm (5.3 in) | |
| 100 years | 154.1 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, 127 years of values from 1895 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: 167.1 mm (6.6 in) in 1962; 140.7 mm (5.5 in) in 1977; 128.8 mm (5.1 in) in 1926.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2010 to 2025 against 1961 to 1990Over 2010 to 2025, Marshalltown had a mean temperature of 9.0 C (48.2 F) and 960.3 mm (37.8 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Tipton (United States, 152 km away), Rockford Gtr Rockford AP (United States, 316 km away) and Dixon Wwtp (United States, 283 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Tipton | United States | 152 km (94 mi) | 9.1 C (48.4 F) | 957.0 mm (37.7 in) | 0.67 |
| Rockford Gtr Rockford AP | United States | 316 km (196 mi) | 8.7 C (47.7 F) | 942.7 mm (37.1 in) | 0.69 |
| Dixon Wwtp | United States | 283 km (176 mi) | 9.2 C (48.6 F) | 888.0 mm (35.0 in) | 0.74 |
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).