| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 31.0 | 34.8 | 43.9 | 56.1 | 69.3 | 77.8 | 82.4 | 80.5 | 72.3 | 61.3 | 47.0 | 34.4 | 57.6 |
| Highest Mean Max. Temperature (F) | 39.7 | 43.6 | 50.4 | 60.8 | 75.1 | 82.2 | 85.8 | 83.8 | 81.6 | 70.6 | 52.4 | 41.8 | 60.0 |
| Year Highest Occurred | 1990 | 1981 | 1977 | 1968 | 1977 | 1976 | 1979 | 1973 | 1961 | 1963 | 1975 | 1990 | 1990 |
| Lowest Mean Max. Temperature (F) | 25.0 | 28.9 | 37.9 | 51.8 | 62.0 | 72.3 | 77.2 | 75.8 | 68.8 | 55.4 | 41.7 | 24.2 | 55.8 |
| Year Lowest Occurred | 1982 | 1963 | 1972 | 1972 | 1967 | 1968 | 1962 | 1964 | 1981 | 1980 | 1968 | 1989 | 1972 |
| Mean Temperature (F) | 19.3 | 22.3 | 32.5 | 43.8 | 55.6 | 64.6 | 69.7 | 68.0 | 59.8 | 49.3 | 37.8 | 24.4 | 45.6 |
| Highest Mean Temperature (F) | 28.4 | 31.3 | 39.4 | 48.1 | 60.0 | 68.6 | 72.7 | 72.4 | 68.2 | 54.9 | 42.0 | 32.0 | 47.9 |
| Year Highest Occurred | 1990 | 1981 | 1977 | 1987 | 1975 | 1976 | 1988 | 1973 | 1961 | 1963 | 1975 | 1990 | 1990 |
| Lowest Mean Temperature (F) | 11.3 | 15.0 | 26.5 | 40.1 | 49.9 | 61.1 | 65.6 | 63.5 | 56.8 | 43.8 | 33.9 | 10.1 | 43.7 |
| Year Lowest Occurred | 1981 | 1963 | 1984 | 1972 | 1967 | 1982 | 1962 | 1964 | 1978 | 1980 | 1986 | 1989 | 1980 |
| Mean Min. Temperature (F) | 7.5 | 9.8 | 21.1 | 31.5 | 41.9 | 51.4 | 57.0 | 55.5 | 47.3 | 37.4 | 28.5 | 14.4 | 33.6 |
| Highest Mean Min. Temperature (F) | 17.0 | 19.8 | 28.4 | 36.4 | 46.0 | 54.9 | 61.4 | 60.9 | 54.7 | 42.4 | 33.6 | 22.5 | 35.7 |
| Year Highest Occurred | 1990 | 1984 | 1977 | 1987 | 1975 | 1976 | 1967 | 1973 | 1961 | 1971 | 1963 | 1973 | 1990 |
| Lowest Mean Min. Temperature (F) | -3.6 | 1.1 | 14.9 | 26.0 | 37.7 | 47.7 | 53.3 | 51.1 | 42.1 | 32.2 | 23.7 | -4.0 | 30.8 |
| Year Lowest Occurred | 1981 | 1963 | 1984 | 1982 | 1967 | 1980 | 1965 | 1964 | 1978 | 1980 | 1986 | 1989 | 1980 |
| Mean Precipitation (in.) | 2.68 | 2.44 | 3.15 | 3.45 | 3.69 | 3.55 | 3.52 | 3.73 | 3.25 | 3.85 | 4.17 | 3.57 | 41.05 |
| Highest Precipitation (in.) | 9.17 | 5.56 | 7.38 | 9.34 | 9.88 | 8.00 | 8.95 | 7.83 | 5.88 | 8.06 | 8.57 | 10.73 | 59.86 |
| Year Highest Occurred | 1979 | 1970 | 1972 | 1983 | 1984 | 1984 | 1976 | 1967 | 1987 | 1981 | 1963 | 1973 | 1990 |
| Lowest Precipitation (in.) | 0.00 | 0.21 | 0.09 | 0.64 | 0.90 | 0.64 | 0.52 | 0.71 | 0.83 | 1.03 | 1.82 | 0.28 | 26.16 |
| Year Lowest Occurred | 1988 | 1990 | 1988 | 1985 | 1988 | 1979 | 1989 | 1961 | 1988 | 1986 | 1978 | 1989 | 1988 |
| Heating Degree Days (F) | 1417. | 1196. | 1008. | 636. | 295. | 61. | 7. | 26. | 174. | 487. | 816. | 1259. | 7382. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 49. | 153. | 119. | 18. | 0. | 0. | 0. | 339. |