| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 36.3 | 39.8 | 49.7 | 59.1 | 68.8 | 75.8 | 79.5 | 78.2 | 72.4 | 62.8 | 51.6 | 41.4 | 59.6 |
| Highest Mean Max. Temperature (F) | 46.8 | 50.9 | 56.5 | 65.1 | 74.4 | 79.7 | 82.9 | 82.9 | 77.4 | 70.4 | 58.4 | 51.6 | 62.6 |
| Year Highest Occurred | 1974 | 1976 | 1976 | 1981 | 1965 | 1984 | 1983 | 1983 | 1970 | 1963 | 1964 | 1984 | 1990 |
| Lowest Mean Max. Temperature (F) | 24.6 | 31.6 | 43.2 | 52.2 | 62.1 | 70.4 | 75.7 | 74.8 | 69.0 | 55.6 | 43.3 | 30.8 | 58.2 |
| Year Lowest Occurred | 1977 | 1978 | 1969 | 1966 | 1967 | 1972 | 1962 | 1967 | 1967 | 1988 | 1976 | 1963 | 1969 |
| Mean Temperature (F) | 25.8 | 28.3 | 37.4 | 46.2 | 56.1 | 63.3 | 67.4 | 65.9 | 60.0 | 49.6 | 40.2 | 30.6 | 47.6 |
| Highest Mean Temperature (F) | 36.6 | 36.9 | 44.0 | 50.9 | 61.4 | 67.5 | 70.9 | 69.8 | 63.6 | 58.4 | 47.5 | 40.4 | 50.3 |
| Year Highest Occurred | 1974 | 1976 | 1973 | 1985 | 1965 | 1984 | 1986 | 1988 | 1980 | 1984 | 1985 | 1984 | 1990 |
| Lowest Mean Temperature (F) | 13.8 | 19.8 | 31.0 | 40.3 | 50.6 | 59.0 | 63.4 | 63.2 | 55.3 | 43.3 | 32.1 | 18.9 | 46.2 |
| Year Lowest Occurred | 1977 | 1978 | 1969 | 1975 | 1967 | 1974 | 1962 | 1967 | 1967 | 1988 | 1976 | 1989 | 1962 |
| Mean Min. Temperature (F) | 15.2 | 16.7 | 25.0 | 33.3 | 43.3 | 50.7 | 55.2 | 53.7 | 47.5 | 36.3 | 28.8 | 19.7 | 35.5 |
| Highest Mean Min. Temperature (F) | 26.3 | 23.8 | 32.2 | 37.0 | 48.4 | 55.2 | 59.3 | 57.3 | 52.2 | 47.5 | 38.0 | 29.2 | 38.0 |
| Year Highest Occurred | 1974 | 1984 | 1973 | 1985 | 1965 | 1984 | 1986 | 1988 | 1971 | 1984 | 1985 | 1984 | 1990 |
| Lowest Mean Min. Temperature (F) | 3.0 | 7.9 | 18.7 | 25.2 | 36.3 | 46.7 | 51.1 | 49.4 | 41.5 | 30.7 | 20.9 | 6.1 | 33.1 |
| Year Lowest Occurred | 1977 | 1978 | 1969 | 1975 | 1961 | 1974 | 1974 | 1962 | 1967 | 1974 | 1976 | 1989 | 1963 |
| Mean Precipitation (in.) | 2.79 | 2.91 | 3.64 | 3.64 | 3.87 | 3.51 | 3.91 | 3.24 | 3.33 | 3.72 | 3.34 | 3.29 | 41.19 |
| Highest Precipitation (in.) | 7.65 | 5.34 | 6.76 | 7.25 | 6.45 | 7.27 | 9.10 | 7.73 | 8.04 | 9.04 | 11.55 | 6.66 | 55.41 |
| Year Highest Occurred | 1979 | 1984 | 1963 | 1987 | 1967 | 1989 | 1969 | 1984 | 1987 | 1976 | 1985 | 1973 | 1979 |
| Lowest Precipitation (in.) | 0.57 | 0.25 | 1.31 | 0.80 | 0.52 | 0.41 | 2.00 | 1.26 | 0.00 | 0.34 | 0.89 | 0.27 | 29.89 |
| Year Lowest Occurred | 1981 | 1968 | 1988 | 1976 | 1964 | 1984 | 1973 | 1975 | 1985 | 1963 | 1965 | 1965 | 1963 |
| Heating Degree Days (F) | 1215. | 1028. | 856. | 564. | 287. | 89. | 28. | 49. | 165. | 477. | 744. | 1066. | 6568. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 11. | 38. | 102. | 77. | 15. | 0. | 0. | 0. | 243. |