| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 23.9 | 28.6 | 39.7 | 54.9 | 68.4 | 77.2 | 82.1 | 78.9 | 69.9 | 58.7 | 42.6 | 28.0 | 54.4 |
| Highest Mean Max. Temperature (F) | 36.1 | 36.8 | 50.4 | 60.9 | 78.3 | 85.9 | 86.9 | 85.1 | 73.9 | 69.0 | 49.9 | 35.3 | 57.0 |
| Year Highest Occurred | 1990 | 1984 | 1968 | 1986 | 1977 | 1988 | 1988 | 1969 | 1971 | 1963 | 1975 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 14.3 | 20.9 | 32.6 | 47.7 | 60.7 | 68.8 | 77.9 | 73.6 | 64.3 | 52.4 | 36.9 | 18.0 | 51.3 |
| Year Lowest Occurred | 1963 | 1979 | 1965 | 1975 | 1983 | 1969 | 1978 | 1985 | 1984 | 1988 | 1985 | 1989 | 1985 |
| Mean Temperature (F) | 13.8 | 17.9 | 29.6 | 43.8 | 55.8 | 64.8 | 69.9 | 66.8 | 58.1 | 47.3 | 33.7 | 19.3 | 43.4 |
| Highest Mean Temperature (F) | 23.7 | 27.8 | 38.9 | 49.2 | 63.4 | 70.7 | 74.0 | 72.1 | 61.6 | 56.4 | 39.5 | 27.7 | 46.7 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1986 | 1977 | 1988 | 1988 | 1988 | 1971 | 1963 | 1975 | 1965 | 1987 |
| Lowest Mean Temperature (F) | 2.9 | 9.2 | 22.9 | 37.6 | 49.9 | 57.8 | 66.7 | 63.5 | 53.7 | 41.2 | 26.5 | 9.2 | 41.2 |
| Year Lowest Occurred | 1977 | 1979 | 1989 | 1975 | 1983 | 1969 | 1978 | 1967 | 1974 | 1987 | 1976 | 1989 | 1989 |
| Mean Min. Temperature (F) | 3.6 | 7.1 | 19.5 | 32.7 | 43.2 | 52.3 | 57.7 | 54.7 | 46.2 | 35.9 | 24.8 | 10.6 | 32.4 |
| Highest Mean Min. Temperature (F) | 13.3 | 18.8 | 29.6 | 37.5 | 49.2 | 57.1 | 61.5 | 60.8 | 50.1 | 45.5 | 29.2 | 21.0 | 36.2 |
| Year Highest Occurred | 1983 | 1983 | 1973 | 1986 | 1962 | 1971 | 1983 | 1988 | 1968 | 1971 | 1987 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -9.0 | -2.6 | 12.8 | 27.4 | 37.2 | 46.5 | 54.5 | 49.5 | 39.8 | 27.6 | 14.8 | -3.2 | 29.1 |
| Year Lowest Occurred | 1977 | 1979 | 1989 | 1975 | 1961 | 1982 | 1965 | 1976 | 1974 | 1976 | 1976 | 1976 | 1976 |
| Mean Precipitation (in.) | 1.20 | 1.03 | 2.22 | 2.59 | 3.54 | 3.43 | 3.54 | 3.73 | 3.77 | 2.42 | 2.16 | 1.61 | 31.24 |
| Highest Precipitation (in.) | 3.73 | 2.91 | 5.11 | 4.87 | 9.37 | 8.53 | 7.27 | 7.17 | 9.26 | 5.05 | 5.39 | 3.66 | 40.07 |
| Year Highest Occurred | 1967 | 1981 | 1977 | 1981 | 1970 | 1968 | 1978 | 1972 | 1965 | 1967 | 1985 | 1968 | 1984 |
| Lowest Precipitation (in.) | 0.10 | 0.05 | 0.27 | 0.59 | 0.92 | 0.88 | 1.09 | 0.57 | 0.39 | 0.47 | 0.00 | 0.47 | 19.93 |
| Year Lowest Occurred | 1981 | 1964 | 1978 | 1989 | 1988 | 1988 | 1981 | 1970 | 1976 | 1975 | 1976 | 1986 | 1976 |
| Heating Degree Days (F) | 1587. | 1319. | 1097. | 636. | 309. | 92. | 12. | 42. | 214. | 549. | 939. | 1417. | 8213. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 24. | 86. | 164. | 97. | 7. | 0. | 0. | 0. | 378. |