Every April in Hayward, WI from 1893 to 2026, ranked: the mean temperature, the mean high and the mean low from the warmest, the precipitation from the wettest; a year missing more than a tenth of its days is not ranked.
| Year | Mean, °F | Rank | High, °F | Rank | Low, °F | Rank | Precipitation, in | Rank | Days missing |
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| 2026 | 43.3 | 19 | 53.9 | 32 | 32.7 | 9 | | | 0 |
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| 2025 | 42.6 | 25 | 53.9 | 32 | 31.3 | 18 | | | 1 |
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| 2024 | 42.3 | 29 | 54.2 | 29 | 30.3 | 26 | 3.01 | 34 | 0 |
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| 2023 | 39 | 46 | 49.2 | 51 | 28.9 | 36 | 4.64 | 6 | 0 |
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| 2022 | 37 | 52 | 46.2 | 56 | 27.8 | 42 | 3.49 | 25 | 0 |
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| 2021 | | | | | | | | | 5 |
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| 2020 | 39.3 | 45 | 51.7 | 42 | 26.9 | 47 | 2.68 | 39 | 0 |
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| 2019 | 40.2 | 40 | 50.8 | 49 | 29.5 | 31 | 5.39 | 4 | 0 |
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| 2018 | 32.1 | 58 | 44.2 | 58 | 20 | 60 | 0.48 | 116 | 0 |
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| 2017 | 43.1 | 22 | 54.7 | 27 | 31.5 | 16 | 2.76 | 38 | 0 |
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| 2016 | 41.8 | 30 | 51.6 | 43 | 32 | 11 | 4.00 | 12 | 0 |
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| 2015 | 43.3 | 19 | 55.1 | 25 | 31.5 | 16 | 1.87 | 72 | 0 |
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| 2014 | 35.7 | 53 | 46.6 | 55 | 24.8 | 51 | 4.29 | 10 | 0 |
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| 2013 | 35.1 | 55 | 45.5 | 57 | 24.8 | 51 | 3.64 | 18 | 0 |
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| 2012 | 43.8 | 16 | 56.5 | 17 | 31.2 | 19 | 2.47 | 47 | 0 |
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| 2011 | 40.3 | 38 | 51.3 | 46 | 29.3 | 32 | 2.65 | 41 | 0 |
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| 2010 | 47.7 | 5 | 62.4 | 4 | 33 | 7 | 1.14 | 96 | 0 |
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| 2009 | 41.4 | 33 | 54.1 | 30 | 28.8 | 38 | 1.18 | 93 | 0 |
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| 2008 | 41.8 | 30 | 53.4 | 36 | 30.1 | 29 | 3.63 | 19 | 0 |
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| 2007 | 43.1 | 22 | 57.3 | 16 | 28.8 | 38 | 1.17 | 94 | 0 |
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| 2006 | 51.1 | 2 | 65.4 | 2 | 36.8 | 2 | 0.67 | 109 | 0 |
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| 2005 | 46.1 | 8 | 60.4 | 9 | 31.7 | 14 | 1.20 | 91 | 0 |
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| 2004 | 41.5 | 32 | 55.6 | 21 | 27.3 | 46 | 4.32 | 9 | 0 |
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| 2003 | 40.2 | 40 | 53 | 37 | 27.5 | 43 | 2.61 | 44 | 0 |
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| 2002 | 40 | 42 | 50.2 | 50 | 29.7 | 30 | 3.87 | 16 | 0 |
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| 2001 | 42.9 | 24 | 54 | 31 | 31.8 | 12 | 7.07 | 1 | 0 |
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| 2000 | 39.5 | 44 | 52.4 | 40 | 26.5 | 48 | 1.84 | 74 | 0 |
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| 1999 | 43.3 | 19 | 56.3 | 18 | 30.3 | 26 | 2.19 | 57 | 0 |
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| 1998 | 45 | 11 | 59.6 | 10 | 30.4 | 25 | 0.59 | 113 | 0 |
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| 1997 | | | | | | | 0.64 | 111 | 30 |
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| 1996 | | | | | | | 1.97 | 69 | 30 |
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| 1995 | | | | | | | 2.87 | 35 | 30 |
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| 1994 | | | | | | | 3.99 | 14 | 30 |
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| 1993 | | | | | | | 3.22 | 27 | 30 |
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| 1992 | | | | | | | 3.63 | 19 | 30 |
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| 1991 | | | | | | | 3.02 | 32 | 30 |
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| 1990 | | | | | | | 2.09 | 63 | 30 |
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| 1989 | | | | | | | 1.79 | 76 | 30 |
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| 1987 | | | | | | | 0.49 | 115 | 30 |
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| 1986 | | | | | | | 3.58 | 22 | 30 |
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| 1985 | | | | | | | 3.03 | 31 | 30 |
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| 1984 | | | | | | | 4.00 | 12 | 30 |
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| 1983 | | | | | | | 2.81 | 36 | 30 |
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| 1982 | | | | | | | 2.22 | 55 | 30 |
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| 1981 | | | | | | | 4.45 | 8 | 30 |
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| 1980 | | | | | | | 0.76 | 106 | 30 |
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| 1979 | | | | | | | 0.63 | 112 | 30 |
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| 1978 | | | | | | | 3.37 | 26 | 30 |
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| 1977 | | | | | | | 3.63 | 19 | 30 |
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| 1976 | | | | | | | 1.66 | 79 | 30 |
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| 1975 | | | | | | | 1.35 | 88 | 30 |
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| 1974 | | | | | | | 2.21 | 56 | 30 |
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| 1973 | | | | | | | 1.08 | 99 | 30 |
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| 1972 | | | | | | | 0.97 | 102 | 30 |
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| 1971 | | | | | | | 1.52 | 80 | 30 |
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| 1970 | | | | | | | 1.48 | 83 | 30 |
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| 1969 | | | | | | | 2.34 | 52 | 16 |
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| 1968 | | | | | | | 3.54 | 23 | 30 |
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| 1967 | | | | | | | 1.98 | 68 | 30 |
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| 1966 | | | | | | | 2.33 | 53 | 30 |
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| 1965 | | | | | | | 2.01 | 66 | 30 |
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| 1964 | | | | | | | 3.89 | 15 | 30 |
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| 1963 | | | | | | | 1.82 | 75 | 30 |
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| 1962 | | | | | | | 1.39 | 85 | 30 |
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| 1961 | | | | | | | 2.18 | 58 | 30 |
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| 1960 | | | | | | | 2.79 | 37 | 30 |
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| 1959 | | | | | | | 0.87 | 104 | 30 |
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| 1958 | | | | | | | 1.89 | 71 | 30 |
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| 1957 | | | | | | | 1.52 | 80 | 30 |
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| 1956 | | | | | | | 1.19 | 92 | 30 |
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| 1955 | | | | | | | 1.77 | 77 | 30 |
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| 1954 | | | | | | | 5.91 | 3 | 30 |
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| 1953 | | | | | | | 2.64 | 42 | 30 |
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| 1952 | | | | | | | 2.10 | 62 | 30 |
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| 1951 | | | | | | | 2.38 | 51 | 30 |
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| 1950 | | | | | | | 4.07 | 11 | 30 |
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| 1949 | | | | | | | 1.37 | 87 | 30 |
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| 1948 | | | | | | | 2.08 | 64 | 30 |
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| 1947 | | | | | | | 4.98 | 5 | 30 |
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| 1946 | | | | | | | 1.22 | 90 | 30 |
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| 1945 | | | | | | | 4.56 | 7 | 30 |
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| 1944 | | | | | | | 2.47 | 47 | 30 |
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| 1943 | | | | | | | 1.90 | 70 | 30 |
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| 1942 | | | | | | | 1.46 | 84 | 30 |
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| 1941 | | | | | | | | | 21 |
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| 1940 | 37.4 | 51 | 51.9 | 41 | 23.2 | 56 | 3.21 | 28 | 2 |
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| 1939 | | | 48.1 | 52 | | | 2.53 | 45 | 7 |
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| 1938 | | | 55.4 | 24 | | | 3.12 | 30 | 9 |
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| 1937 | | | | | | | 2.42 | 50 | 13 |
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| 1936 | | | | | 21 | 58 | 1.00 | 101 | 7 |
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| 1935 | | | | | | | 0.94 | 103 | 24 |
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| 1934 | 40.3 | 38 | 50.9 | 48 | 29.3 | 32 | 2.00 | 67 | 1 |
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| 1933 | | | | | | | 3.51 | 24 | 30 |
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| 1923 | 37.6 | 49 | 51.5 | 45 | 24.7 | 53 | 2.25 | 54 | 1 |
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| 1922 | 42.4 | 28 | 53.7 | 34 | 31 | 21 | | | 0 |
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| 1921 | 48.2 | 4 | 62.2 | 5 | 34.3 | 4 | 1.29 | 89 | 0 |
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| 1920 | | | | | | | 1.39 | 85 | 9 |
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| 1919 | | | | | | | 3.14 | 29 | 7 |
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| 1918 | 39 | 46 | 56.2 | 19 | 21.7 | 57 | 1.07 | 100 | 1 |
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| 1917 | 38.6 | 48 | 51.6 | 43 | 25.6 | 50 | | | 0 |
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| 1916 | 40.7 | 36 | 53.5 | 35 | 28.4 | 41 | 3.70 | 17 | 1 |
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| 1915 | 53.7 | 1 | 68.8 | 1 | 38.5 | 1 | 1.10 | 97 | 0 |
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| 1914 | 40.7 | 36 | 52.8 | 39 | 28.6 | 40 | 2.52 | 46 | 0 |
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| 1913 | 46.5 | 6 | 61.2 | 7 | 31.8 | 12 | 0.74 | 107 | 0 |
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| 1912 | 44.7 | 14 | 58.7 | 12 | 30.9 | 23 | 2.18 | 58 | 2 |
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| 1911 | 40.9 | 34 | 52.9 | 38 | 28.9 | 36 | 0.73 | 108 | 0 |
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| 1910 | | | | | 33.3 | 6 | 1.10 | 97 | 6 |
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| 1909 | 33.6 | 56 | 43.3 | 60 | 24 | 55 | 3.02 | 32 | 0 |
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| 1908 | 43.6 | 17 | 56.2 | 19 | 31.1 | 20 | 2.64 | 42 | 0 |
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| 1907 | 32.4 | 57 | 44.2 | 58 | 20.5 | 59 | 0.66 | 110 | 0 |
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| 1906 | 46.1 | 8 | 58.8 | 11 | 33.4 | 5 | 1.15 | 95 | 0 |
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| 1905 | 39.6 | 43 | 51.3 | 46 | 27.5 | 43 | 2.14 | 61 | 3 |
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| 1904 | 35.6 | 54 | 46.9 | 54 | 24.3 | 54 | 2.67 | 40 | 3 |
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| 1903 | 42.6 | 25 | 55.6 | 21 | 29.1 | 35 | 1.49 | 82 | 1 |
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| 1902 | 40.8 | 35 | 55.5 | 23 | 26.2 | 49 | 2.18 | 58 | 3 |
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| 1901 | 46.2 | 7 | 61.4 | 6 | 31 | 21 | 1.85 | 73 | 0 |
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| 1900 | 49 | 3 | 63.6 | 3 | 34.4 | 3 | 2.45 | 49 | 0 |
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| 1899 | 45.5 | 10 | 60.7 | 8 | 30.3 | 26 | | | 1 |
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| 1898 | 43.6 | 17 | 58.3 | 13 | 29.3 | 32 | 0.56 | 114 | 1 |
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| 1897 | 42.6 | 25 | 54.7 | 27 | 30.5 | 24 | 0.31 | 117 | 0 |
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| 1896 | 44 | 15 | 55.1 | 25 | 32.9 | 8 | 7.06 | 2 | 1 |
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| 1895 | 45 | 11 | 58.3 | 13 | 31.7 | 14 | 0.83 | 105 | 0 |
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| 1894 | 45 | 11 | 58.2 | 15 | 32.6 | 10 | 1.70 | 78 | 1 |
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| 1893 | 37.6 | 49 | 47.7 | 53 | 27.5 | 43 | 2.05 | 65 | 0 |
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