| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 31.0 | 32.2 | 35.2 | 42.5 | 52.8 | 63.9 | 72.7 | 71.0 | 61.9 | 51.6 | 38.2 | 31.7 | 48.7 |
| Highest Mean Max. Temperature (F) | 41.3 | 38.2 | 44.2 | 51.1 | 62.6 | 71.2 | 76.6 | 74.2 | 71.2 | 58.7 | 46.0 | 43.1 | 51.5 |
| Year Highest Occurred | 1981 | 1976 | 1972 | 1977 | 1969 | 1961 | 1976 | 1969 | 1979 | 1963 | 1976 | 1980 | 1976 |
| Lowest Mean Max. Temperature (F) | 22.6 | 24.2 | 25.3 | 35.4 | 42.6 | 57.9 | 67.5 | 63.5 | 53.8 | 42.0 | 30.5 | 25.1 | 45.7 |
| Year Lowest Occurred | 1979 | 1985 | 1964 | 1963 | 1983 | 1964 | 1987 | 1968 | 1965 | 1984 | 1985 | 1990 | 1982 |
| Mean Temperature (F) | 22.5 | 23.7 | 26.4 | 33.3 | 42.3 | 52.3 | 60.5 | 59.5 | 50.9 | 41.6 | 29.5 | 23.3 | 38.8 |
| Highest Mean Temperature (F) | 31.6 | 29.5 | 34.6 | 40.7 | 50.9 | 57.9 | 62.8 | 63.9 | 57.7 | 48.5 | 35.7 | 33.4 | 41.3 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1987 | 1969 | 1988 | 1988 | 1967 | 1979 | 1963 | 1965 | 1980 | 1981 |
| Lowest Mean Temperature (F) | 15.7 | 16.0 | 17.3 | 27.4 | 35.6 | 47.4 | 56.7 | 53.4 | 44.5 | 33.7 | 24.1 | 15.6 | 36.0 |
| Year Lowest Occurred | 1979 | 1964 | 1964 | 1970 | 1983 | 1964 | 1987 | 1968 | 1965 | 1984 | 1985 | 1990 | 1964 |
| Mean Min. Temperature (F) | 13.8 | 15.2 | 17.6 | 24.0 | 31.7 | 40.6 | 48.2 | 48.0 | 39.9 | 31.6 | 20.8 | 14.9 | 28.9 |
| Highest Mean Min. Temperature (F) | 23.1 | 21.8 | 26.7 | 30.4 | 39.1 | 46.0 | 52.5 | 54.1 | 45.3 | 38.2 | 27.7 | 23.7 | 31.3 |
| Year Highest Occurred | 1986 | 1968 | 1986 | 1987 | 1969 | 1988 | 1985 | 1967 | 1967 | 1963 | 1965 | 1980 | 1981 |
| Lowest Mean Min. Temperature (F) | 8.7 | 5.7 | 9.3 | 18.8 | 26.9 | 36.9 | 45.3 | 42.9 | 33.5 | 25.3 | 15.6 | 6.1 | 25.4 |
| Year Lowest Occurred | 1979 | 1964 | 1964 | 1975 | 1979 | 1964 | 1962 | 1976 | 1971 | 1984 | 1964 | 1990 | 1964 |
| Mean Precipitation (in.) | 6.99 | 6.43 | 6.76 | 6.08 | 3.39 | 1.83 | 1.62 | 1.79 | 2.61 | 3.48 | 5.70 | 6.90 | 53.58 |
| Highest Precipitation (in.) | 16.70 | 13.73 | 15.09 | 13.39 | 10.15 | 7.02 | 4.49 | 6.36 | 13.47 | 9.99 | 13.79 | 25.45 | 108.54 |
| Year Highest Occurred | 1980 | 1980 | 1982 | 1963 | 1981 | 1984 | 1987 | 1983 | 1982 | 1981 | 1983 | 1983 | 1983 |
| Lowest Precipitation (in.) | 0.07 | 0.87 | 1.24 | 0.44 | 0.00 | 0.10 | 0.00 | 0.09 | 0.06 | 0.08 | 0.23 | 0.07 | 21.22 |
| Year Lowest Occurred | 1961 | 1964 | 1966 | 1987 | 1969 | 1961 | 1971 | 1985 | 1979 | 1978 | 1976 | 1976 | 1976 |
| Heating Degree Days (F) | 1318. | 1156. | 1197. | 951. | 704. | 386. | 146. | 185. | 428. | 725. | 1065. | 1293. | 9554. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 7. | 15. | 0. | 0. | 0. | 0. | 22. |