| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 10.1 | 16.6 | 30.4 | 50.6 | 66.9 | 75.8 | 80.8 | 79.2 | 67.9 | 54.4 | 33.5 | 16.5 | 48.6 |
| Highest Mean Max. Temperature (F) | 23.0 | 29.5 | 41.5 | 62.7 | 79.1 | 86.9 | 85.7 | 86.9 | 74.0 | 67.6 | 43.5 | 26.3 | 53.5 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1980 | 1977 | 1988 | 1988 | 1961 | 1963 | 1963 | 1981 | 1974 | 1987 |
| Lowest Mean Max. Temperature (F) | -5.9 | 2.2 | 19.5 | 38.6 | 55.7 | 66.5 | 76.2 | 71.3 | 57.0 | 45.1 | 22.3 | 5.1 | 44.4 |
| Year Lowest Occurred | 1966 | 1979 | 1965 | 1979 | 1979 | 1969 | 1971 | 1968 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | -0.4 | 5.6 | 20.3 | 39.3 | 53.7 | 63.1 | 67.7 | 65.4 | 54.7 | 42.6 | 24.1 | 6.8 | 36.9 |
| Highest Mean Temperature (F) | 13.4 | 19.6 | 33.6 | 47.2 | 65.3 | 71.0 | 72.5 | 71.7 | 60.3 | 53.5 | 33.8 | 17.5 | 41.1 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1974 | 1969 | 1967 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Temperature (F) | -16.4 | -8.1 | 9.9 | 30.2 | 46.5 | 54.6 | 63.8 | 58.1 | 46.6 | 37.4 | 11.6 | -4.7 | 33.3 |
| Year Lowest Occurred | 1966 | 1979 | 1965 | 1979 | 1979 | 1969 | 1972 | 1977 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -10.9 | -5.5 | 10.2 | 28.0 | 40.4 | 50.3 | 54.6 | 51.5 | 41.5 | 30.8 | 14.7 | -3.0 | 25.2 |
| Highest Mean Min. Temperature (F) | 3.8 | 9.9 | 25.6 | 34.1 | 51.4 | 56.9 | 59.4 | 58.7 | 47.6 | 39.4 | 24.0 | 9.0 | 28.7 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1969 | 1977 | 1963 | 1974 | 1969 | 1967 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -26.8 | -19.0 | -0.3 | 20.8 | 32.0 | 41.6 | 50.7 | 43.5 | 34.0 | 21.8 | 0.8 | -14.5 | 22.3 |
| Year Lowest Occurred | 1966 | 1966 | 1970 | 1962 | 1983 | 1982 | 1972 | 1977 | 1984 | 1988 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.49 | 0.38 | 0.82 | 1.22 | 2.30 | 3.18 | 2.68 | 2.33 | 2.09 | 1.20 | 0.59 | 0.50 | 17.78 |
| Highest Precipitation (in.) | 1.24 | 1.43 | 2.48 | 3.31 | 5.71 | 8.80 | 6.92 | 6.18 | 5.43 | 4.24 | 2.78 | 1.20 | 25.79 |
| Year Highest Occurred | 1971 | 1962 | 1971 | 1970 | 1977 | 1964 | 1968 | 1978 | 1965 | 1984 | 1986 | 1977 | 1968 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.49 | 0.56 | 0.46 | 0.48 | 0.10 | 0.04 | 0.00 | 0.05 | 10.75 |
| Year Lowest Occurred | 1973 | 1982 | 1986 | 1988 | 1961 | 1961 | 1989 | 1961 | 1984 | 1990 | 1976 | 1981 | 1988 |
| Heating Degree Days (F) | 2027. | 1663. | 1386. | 771. | 376. | 139. | 40. | 105. | 319. | 694. | 1227. | 1804. | 10551. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 26. | 82. | 124. | 117. | 10. | 0. | 0. | 0. | 359. |