| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 21.0 | 27.3 | 39.7 | 56.7 | 70.0 | 79.2 | 85.2 | 82.5 | 72.3 | 59.9 | 40.8 | 25.1 | 55.0 |
| Highest Mean Max. Temperature (F) | 35.8 | 40.1 | 53.6 | 66.5 | 78.5 | 87.6 | 92.4 | 91.4 | 78.4 | 70.3 | 48.0 | 36.6 | 58.5 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1976 | 1983 | 1979 | 1963 | 1980 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 9.5 | 15.4 | 27.3 | 44.8 | 64.9 | 72.4 | 79.2 | 75.4 | 57.6 | 51.7 | 28.4 | 7.2 | 51.8 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1975 | 1990 | 1969 | 1962 | 1985 | 1965 | 1969 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 8.9 | 15.6 | 28.5 | 43.9 | 56.6 | 66.2 | 71.8 | 69.0 | 58.7 | 46.1 | 29.9 | 14.1 | 42.4 |
| Highest Mean Temperature (F) | 23.9 | 29.2 | 37.4 | 51.3 | 64.8 | 73.0 | 76.6 | 77.0 | 64.1 | 55.2 | 35.7 | 23.9 | 46.8 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1974 | 1983 | 1978 | 1963 | 1987 | 1965 | 1987 |
| Lowest Mean Temperature (F) | -2.1 | 3.9 | 16.2 | 37.5 | 51.7 | 59.7 | 67.5 | 64.4 | 48.3 | 41.2 | 18.8 | -1.6 | 40.0 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1975 | 1967 | 1969 | 1971 | 1985 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -3.2 | 3.8 | 17.2 | 31.0 | 43.1 | 53.1 | 58.3 | 55.4 | 45.0 | 32.1 | 18.9 | 3.1 | 29.8 |
| Highest Mean Min. Temperature (F) | 12.0 | 18.2 | 26.1 | 36.2 | 51.1 | 58.4 | 62.0 | 62.5 | 49.7 | 40.0 | 25.4 | 14.6 | 35.0 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1988 | 1983 | 1983 | 1978 | 1963 | 1987 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -13.9 | -10.0 | 3.5 | 24.8 | 36.9 | 46.9 | 52.5 | 51.3 | 39.0 | 26.8 | 9.1 | -10.3 | 27.3 |
| Year Lowest Occurred | 1978 | 1979 | 1969 | 1961 | 1967 | 1969 | 1961 | 1967 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.60 | 0.62 | 1.38 | 2.03 | 3.06 | 3.92 | 3.30 | 2.68 | 2.34 | 1.78 | 0.86 | 0.57 | 23.14 |
| Highest Precipitation (in.) | 2.45 | 2.38 | 4.23 | 6.42 | 8.97 | 11.71 | 9.23 | 6.37 | 8.03 | 6.93 | 3.32 | 2.37 | 34.02 |
| Year Highest Occurred | 1979 | 1977 | 1977 | 1986 | 1962 | 1980 | 1963 | 1978 | 1985 | 1984 | 1983 | 1968 | 1977 |
| Lowest Precipitation (in.) | 0.00 | 0.06 | 0.07 | 0.25 | 0.36 | 0.49 | 0.54 | 0.53 | 0.40 | 0.00 | 0.04 | 0.00 | 9.86 |
| Year Lowest Occurred | 1974 | 1983 | 1971 | 1980 | 1976 | 1988 | 1971 | 1976 | 1979 | 1989 | 1984 | 1989 | 1976 |
| Heating Degree Days (F) | 1739. | 1383. | 1132. | 633. | 281. | 64. | 15. | 40. | 211. | 586. | 1053. | 1578. | 8715. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 20. | 100. | 226. | 164. | 22. | 0. | 0. | 0. | 532. |