Every 1 September to 9 October in Wilmington, OH from 1915 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 | 68.6 | 10 | 79.8 | 21 | 57.4 | 4 | 6.05 | 18 | 0 |
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| 2025 | 66.5 | 30 | 79.7 | 22 | 53.3 | 38 | 3.85 | 50 | 0 |
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| 2024 | 68.2 | 14 | 80.8 | 12 | 55.6 | 16 | 3.26 | 65 | 0 |
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| 2023 | 67.3 | 21 | 78.7 | 34 | 55.8 | 15 | 1.38 | 100 | 0 |
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| 2022 | 63.3 | 68 | 74.6 | 85 | 52 | 54 | 2.64 | 76 | 0 |
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| 2021 | 67.8 | 15 | 78.6 | 37 | 57 | 6 | 3.58 | 57 | 0 |
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| 2020 | 63 | 75 | 75.1 | 77 | 50.9 | 73 | 1.53 | 98 | 0 |
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| 2019 | 70 | 3 | 82.2 | 7 | 57.5 | 3 | 2.00 | 90 | 1 |
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| 2018 | 70.9 | 2 | 80.3 | 19 | 61.5 | 1 | 5.09 | 32 | 0 |
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| 2017 | 65.5 | 42 | 76.5 | 59 | 54.4 | 24 | 4.89 | 35 | 0 |
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| 2016 | 67.7 | 18 | 79.2 | 27 | 56.2 | 11 | 3.49 | 60 | 0 |
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| 2015 | 66.3 | 31 | 77.8 | 46 | 54.8 | 23 | 2.70 | 73 | 0 |
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| 2014 | 61.9 | 88 | 73.7 | 90 | 50.1 | 79 | 2.36 | 80 | 0 |
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| 2013 | 65.7 | 38 | 77.8 | 46 | 53.6 | 34 | 6.34 | 15 | 0 |
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| 2012 | 61.9 | 88 | 72.9 | 95 | 50.8 | 76 | 5.26 | 27 | 0 |
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| 2011 | 62.5 | 81 | 72.4 | 97 | 52.5 | 42 | 4.59 | 40 | 0 |
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| 2010 | 64.7 | 50 | 78 | 44 | 51.4 | 62 | 1.28 | 103 | 0 |
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| 2009 | 62.4 | 82 | 72.5 | 96 | 52.4 | 43 | 5.30 | 26 | 0 |
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| 2008 | 66 | 34 | 78.1 | 43 | 53.9 | 30 | 2.46 | 79 | 0 |
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| 2007 | 69.8 | 5 | 83 | 4 | 56.7 | 8 | 2.01 | 89 | 0 |
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| 2006 | 61.4 | 97 | 71.1 | 107 | 51.7 | 59 | 9.69 | 3 | 1 |
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| 2005 | 67.2 | 23 | 79.1 | 29 | 55.4 | 19 | 2.15 | 85 | 0 |
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| 2004 | 63.4 | 66 | 75.8 | 69 | 51.1 | 70 | 2.78 | 71 | 0 |
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| 2003 | 60 | 105 | 71.3 | 105 | 48.7 | 96 | 6.65 | 11 | 1 |
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| 2002 | 66.7 | 28 | 78.4 | 40 | 54.9 | 22 | 6.50 | 13 | 0 |
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| 2001 | 60.8 | 100 | 72.4 | 97 | 49.2 | 89 | 1.94 | 92 | 0 |
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| 2000 | 61.7 | 93 | 72.2 | 101 | 51.1 | 70 | 6.23 | 17 | 1 |
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| 1999 | 63.3 | 68 | 77.7 | 48 | 48.9 | 93 | 2.22 | 84 | 0 |
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| 1998 | 65.9 | 37 | 78.7 | 34 | 53 | 40 | 3.61 | 56 | 0 |
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| 1997 | 63 | 75 | 75.9 | 67 | 50.1 | 79 | 1.08 | 106 | 0 |
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| 1996 | 61.9 | 88 | 73.2 | 94 | 50.6 | 78 | 4.59 | 40 | 0 |
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| 1995 | 62.3 | 84 | 73.7 | 90 | 50.9 | 73 | 6.49 | 14 | 0 |
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| 1994 | 62.9 | 78 | 74.1 | 87 | 51.6 | 60 | 1.10 | 105 | 0 |
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| 1993 | 63.3 | 68 | 75.1 | 77 | 51.4 | 62 | 2.67 | 74 | 1 |
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| 1992 | 64.4 | 54 | 76.5 | 59 | 52.3 | 46 | 2.08 | 88 | 0 |
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| 1991 | 63.2 | 71 | 74.9 | 81 | 51.4 | 62 | 2.78 | 71 | 0 |
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| 1990 | 63.2 | 71 | 74.3 | 86 | 52.2 | 49 | 5.53 | 23 | 1 |
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| 1989 | 60.1 | 104 | 71.2 | 106 | 49.1 | 91 | 3.69 | 53 | 0 |
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| 1988 | 60.5 | 101 | 72.3 | 99 | 48.7 | 96 | 5.00 | 34 | 0 |
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| 1987 | 61.7 | 93 | 73.9 | 89 | 49.4 | 86 | 2.29 | 82 | 0 |
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| 1986 | 66 | 34 | 76.9 | 57 | 55.2 | 20 | 5.38 | 25 | 0 |
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| 1985 | 62.2 | 87 | 75.6 | 73 | 48.7 | 96 | 0.97 | 108 | 0 |
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| 1984 | 60.5 | 101 | 71.9 | 103 | 49 | 92 | 4.24 | 46 | 0 |
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| 1983 | 65.6 | 41 | 78.8 | 32 | 52.3 | 46 | 3.06 | 70 | 0 |
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| 1982 | 64.1 | 58 | 76 | 65 | 52.2 | 49 | 1.35 | 101 | 0 |
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| 1981 | | | | | | | | | 30 |
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| 1980 | 62.7 | 80 | 76.3 | 62 | 49.2 | 89 | 1.35 | 101 | 0 |
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| 1979 | 61.3 | 98 | 73.4 | 93 | 49.3 | 87 | 7.59 | 7 | 0 |
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| 1978 | 63.9 | 60 | 76 | 65 | 51.8 | 58 | 3.22 | 67 | 0 |
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| 1977 | 63.6 | 64 | 74.9 | 81 | 52.3 | 46 | 6.04 | 19 | 0 |
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| 1976 | 55.6 | 108 | 69.2 | 108 | 42.1 | 108 | 2.24 | 83 | 0 |
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| 1975 | 57.8 | 107 | 71.4 | 104 | 44.2 | 107 | 4.26 | 45 | 0 |
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| 1973 | 66.1 | 33 | 79.7 | 22 | 52.4 | 43 | 5.45 | 24 | 0 |
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| 1972 | 65 | 44 | 75.7 | 72 | 53.7 | 33 | 7.79 | 6 | 1 |
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| 1971 | 67 | 24 | 77.4 | 53 | 56.6 | 9 | 6.03 | 20 | 0 |
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| 1970 | 68.4 | 12 | 80.7 | 13 | 56.1 | 12 | 4.03 | 49 | 0 |
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| 1969 | 64.6 | 52 | 77.2 | 56 | 51.9 | 55 | 2.00 | 90 | 0 |
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| 1968 | 64 | 59 | 75.6 | 73 | 52.4 | 43 | 3.63 | 55 | 0 |
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| 1967 | 62.9 | 78 | 76.3 | 62 | 49.5 | 85 | 3.38 | 63 | 0 |
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| 1966 | 61 | 99 | 72 | 102 | 49.9 | 82 | 4.32 | 43 | 0 |
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| 1965 | 64.2 | 57 | 75.1 | 77 | 53.3 | 38 | 10.19 | 2 | 0 |
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| 1964 | 63.7 | 62 | 77.4 | 53 | 50 | 81 | 2.66 | 75 | 0 |
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| 1963 | 63.2 | 71 | 77.7 | 48 | 48.7 | 96 | 1.55 | 97 | 0 |
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| 1962 | 62.3 | 84 | 73.6 | 92 | 51 | 72 | 6.64 | 12 | 0 |
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| 1961 | 66.7 | 28 | 79.4 | 26 | 54.1 | 27 | 3.41 | 62 | 0 |
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| 1960 | 66 | 34 | 78.7 | 34 | 53.4 | 36 | 1.76 | 95 | 0 |
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| 1959 | 68.5 | 11 | 80.9 | 11 | 56 | 13 | 5.12 | 29 | 0 |
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| 1958 | 64.4 | 54 | 75.8 | 69 | 52.9 | 41 | 3.67 | 54 | 0 |
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| 1957 | 63.8 | 61 | 75.4 | 76 | 52.2 | 49 | 5.12 | 29 | 0 |
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| 1956 | 62.3 | 84 | 75 | 80 | 49.6 | 84 | 3.37 | 64 | 0 |
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| 1955 | 67 | 24 | 79.5 | 25 | 54.3 | 25 | 7.34 | 8 | 1 |
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| 1954 | 67.8 | 15 | 80.6 | 16 | 55 | 21 | 2.12 | 86 | 0 |
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| 1953 | 65.7 | 38 | 80.4 | 17 | 50.9 | 73 | 1.26 | 104 | 0 |
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| 1952 | 61.6 | 96 | 75.8 | 69 | 47.4 | 103 | 3.51 | 58 | 0 |
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| 1951 | 65 | 44 | 78.6 | 37 | 51.4 | 62 | 5.90 | 21 | 0 |
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| 1950 | 63.4 | 66 | 74.8 | 84 | 51.9 | 55 | 8.84 | 4 | 0 |
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| 1949 | 63.1 | 74 | 76.9 | 57 | 49.3 | 87 | 3.46 | 61 | 0 |
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| 1948 | 65 | 44 | 78.6 | 37 | 51.3 | 66 | 2.55 | 78 | 0 |
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| 1947 | 65.7 | 38 | 79.2 | 27 | 52.2 | 49 | 3.85 | 50 | 0 |
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| 1946 | 65.4 | 43 | 81.9 | 8 | 48.9 | 93 | 0.67 | 109 | 0 |
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| 1945 | 66.3 | 31 | 78.9 | 30 | 53.6 | 34 | 5.26 | 27 | 0 |
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| 1944 | 65 | 44 | 77.9 | 45 | 52.1 | 53 | 2.64 | 76 | 0 |
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| 1943 | 61.7 | 93 | 76.4 | 61 | 47.1 | 104 | 1.88 | 93 | 0 |
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| 1942 | 65 | 44 | 78.8 | 32 | 51.3 | 66 | 3.77 | 52 | 0 |
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| 1941 | 69.4 | 6 | 82.8 | 6 | 56 | 13 | 4.27 | 44 | 0 |
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| 1940 | 63 | 75 | 77.7 | 48 | 48.4 | 100 | 2.11 | 87 | 1 |
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| 1939 | 71.6 | 1 | 87.7 | 1 | 55.5 | 18 | 1.43 | 99 | 0 |
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| 1938 | 64.8 | 49 | 77.7 | 48 | 51.9 | 55 | 4.85 | 36 | 0 |
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| 1937 | 64.7 | 50 | 78.2 | 41 | 51.2 | 68 | 6.75 | 10 | 0 |
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| 1936 | 69.3 | 7 | 81.7 | 9 | 56.8 | 7 | 6.27 | 16 | 0 |
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| 1935 | 61.9 | 88 | 75.9 | 67 | 48 | 102 | 4.67 | 39 | 0 |
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| 1934 | 67 | 24 | 80.7 | 13 | 53.4 | 36 | 5.01 | 33 | 0 |
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| 1933 | 67 | 24 | 79.7 | 22 | 54.1 | 27 | 5.80 | 22 | 1 |
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| 1932 | 64.5 | 53 | 78.2 | 41 | 50.8 | 76 | 3.50 | 59 | 0 |
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| 1931 | 70 | 3 | 82.9 | 5 | 57.1 | 5 | 4.69 | 38 | 2 |
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| 1930 | 67.3 | 21 | 80.7 | 13 | 53.9 | 30 | 1.58 | 96 | 0 |
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| 1929 | 63.5 | 65 | 75.5 | 75 | 51.5 | 61 | 4.78 | 37 | 0 |
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| 1928 | 62.4 | 82 | 76.3 | 62 | 48.1 | 101 | 1.82 | 94 | 1 |
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| 1927 | 67.8 | 15 | 81.5 | 10 | 54.1 | 27 | 4.17 | 47 | 0 |
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| 1926 | 67.5 | 20 | 78.9 | 30 | 56.4 | 10 | 10.55 | 1 | 1 |
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| 1925 | 69.1 | 9 | 80.4 | 17 | 57.8 | 2 | 7.87 | 5 | 0 |
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| 1924 | 61.9 | 88 | 74.9 | 81 | 48.9 | 93 | 4.11 | 48 | 0 |
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| 1923 | 63.7 | 62 | 77.3 | 55 | 49.9 | 82 | 3.15 | 68 | 2 |
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| 1922 | 69.3 | 7 | 84.5 | 2 | 54.2 | 26 | 2.34 | 81 | 0 |
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| 1921 | 67.7 | 18 | 79.9 | 20 | 55.6 | 16 | 5.12 | 29 | 0 |
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| 1920 | 64.3 | 56 | 77.7 | 48 | 51.2 | 68 | | | 2 |
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| 1919 | 68.4 | 12 | 83.1 | 3 | 53.9 | 30 | 3.26 | 65 | 2 |
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| 1918 | 59.1 | 106 | 72.3 | 99 | 46 | 106 | 4.41 | 42 | 0 |
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| 1917 | 60.4 | 103 | 74.1 | 87 | 46.8 | 105 | 1.07 | 107 | 0 |
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| 1916 | | | | | | | 3.13 | 69 | 39 |
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| 1915 | | | | | | | 7.13 | 9 | 39 |
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