| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 21.0 | 27.3 | 39.9 | 57.6 | 70.3 | 79.7 | 86.8 | 85.0 | 73.5 | 60.7 | 41.3 | 25.7 | 55.7 |
| Highest Mean Max. Temperature (F) | 36.3 | 42.2 | 53.1 | 67.0 | 78.5 | 90.7 | 92.9 | 92.3 | 81.5 | 70.9 | 49.2 | 37.9 | 61.2 |
| Year Highest Occurred | 1990 | 1987 | 1981 | 1987 | 1977 | 1988 | 1975 | 1976 | 1978 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 7.1 | 13.5 | 27.7 | 45.5 | 64.6 | 72.2 | 79.5 | 78.3 | 60.0 | 52.6 | 28.4 | 8.6 | 51.9 |
| Year Lowest Occurred | 1978 | 1979 | 1969 | 1975 | 1979 | 1969 | 1962 | 1985 | 1965 | 1969 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 9.1 | 15.6 | 28.8 | 44.5 | 56.7 | 66.5 | 72.6 | 70.2 | 58.8 | 46.3 | 29.7 | 14.5 | 42.8 |
| Highest Mean Temperature (F) | 25.3 | 30.8 | 37.0 | 51.0 | 64.3 | 75.3 | 77.8 | 76.8 | 63.2 | 55.6 | 35.8 | 25.5 | 47.9 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1974 | 1983 | 1990 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Temperature (F) | -4.5 | 1.6 | 17.0 | 38.5 | 51.3 | 60.6 | 68.0 | 64.6 | 49.8 | 40.8 | 17.9 | -1.3 | 39.4 |
| Year Lowest Occurred | 1978 | 1979 | 1969 | 1975 | 1983 | 1969 | 1962 | 1977 | 1965 | 1969 | 1985 | 1983 | 1978 |
| Mean Min. Temperature (F) | -2.8 | 3.8 | 17.5 | 31.4 | 43.1 | 53.2 | 58.3 | 55.4 | 44.0 | 31.8 | 18.0 | 3.1 | 29.7 |
| Highest Mean Min. Temperature (F) | 14.2 | 20.1 | 27.6 | 36.5 | 50.0 | 59.8 | 62.8 | 61.6 | 48.8 | 40.3 | 23.7 | 15.8 | 34.6 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1977 | 1977 | 1988 | 1974 | 1983 | 1963 | 1963 | 1987 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -16.5 | -10.4 | 6.3 | 25.7 | 36.6 | 46.7 | 52.4 | 49.1 | 37.9 | 25.4 | 7.3 | -11.1 | 25.6 |
| Year Lowest Occurred | 1982 | 1979 | 1969 | 1988 | 1983 | 1982 | 1967 | 1977 | 1984 | 1976 | 1985 | 1983 | 1978 |
| Mean Precipitation (in.) | 0.39 | 0.56 | 1.29 | 2.24 | 2.87 | 3.50 | 2.62 | 2.62 | 1.89 | 1.24 | 0.64 | 0.44 | 20.30 |
| Highest Precipitation (in.) | 1.49 | 2.21 | 5.10 | 7.66 | 6.19 | 8.20 | 6.77 | 7.06 | 4.81 | 4.50 | 3.06 | 1.41 | 31.14 |
| Year Highest Occurred | 1979 | 1969 | 1977 | 1986 | 1965 | 1984 | 1990 | 1984 | 1988 | 1982 | 1977 | 1977 | 1977 |
| Lowest Precipitation (in.) | 0.00 | 0.03 | 0.02 | 0.40 | 0.63 | 0.88 | 0.23 | 0.58 | 0.01 | 0.06 | 0.00 | 0.00 | 11.04 |
| Year Lowest Occurred | 1961 | 1985 | 1971 | 1987 | 1976 | 1974 | 1975 | 1976 | 1979 | 1964 | 1979 | 1986 | 1976 |
| Heating Degree Days (F) | 1733. | 1383. | 1122. | 615. | 278. | 74. | 14. | 34. | 208. | 580. | 1059. | 1566. | 8666. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 20. | 119. | 250. | 195. | 22. | 0. | 0. | 0. | 606. |