| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 32.7 | 40.1 | 50.0 | 59.9 | 68.9 | 77.1 | 85.0 | 85.5 | 75.2 | 60.9 | 42.8 | 33.4 | 59.3 |
| Highest Mean Max. Temperature (F) | 40.9 | 45.8 | 57.8 | 67.8 | 74.8 | 85.5 | 94.6 | 94.9 | 88.4 | 69.1 | 47.4 | 39.2 | 63.6 |
| Year Highest Occurred | 1990 | 1968 | 1981 | 1987 | 1987 | 1986 | 1985 | 1986 | 1990 | 1987 | 1990 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 20.7 | 34.6 | 42.2 | 54.0 | 62.9 | 69.9 | 78.2 | 76.6 | 67.4 | 56.1 | 30.4 | 25.6 | 56.5 |
| Year Lowest Occurred | 1979 | 1975 | 1975 | 1975 | 1974 | 1971 | 1983 | 1976 | 1985 | 1969 | 1985 | 1983 | 1975 |
| Mean Temperature (F) | 24.8 | 30.8 | 38.5 | 46.3 | 54.0 | 61.2 | 66.3 | 66.0 | 56.8 | 45.6 | 34.8 | 26.5 | 46.0 |
| Highest Mean Temperature (F) | 33.7 | 36.6 | 43.5 | 51.4 | 57.6 | 67.0 | 72.3 | 72.2 | 64.3 | 51.3 | 39.0 | 33.9 | 48.8 |
| Year Highest Occurred | 1981 | 1983 | 1986 | 1987 | 1987 | 1986 | 1985 | 1986 | 1990 | 1988 | 1983 | 1979 | 1987 |
| Lowest Mean Temperature (F) | 9.4 | 22.9 | 31.7 | 42.4 | 50.5 | 56.8 | 62.8 | 60.1 | 51.7 | 42.7 | 21.7 | 17.4 | 43.2 |
| Year Lowest Occurred | 1979 | 1964 | 1965 | 1972 | 1974 | 1976 | 1969 | 1964 | 1965 | 1969 | 1985 | 1983 | 1964 |
| Mean Min. Temperature (F) | 16.8 | 21.5 | 26.9 | 32.6 | 39.1 | 45.4 | 47.7 | 46.5 | 38.4 | 30.2 | 26.7 | 19.6 | 32.6 |
| Highest Mean Min. Temperature (F) | 26.9 | 29.4 | 32.8 | 36.5 | 44.7 | 48.7 | 53.5 | 50.1 | 42.5 | 35.4 | 33.1 | 28.9 | 34.7 |
| Year Highest Occurred | 1981 | 1983 | 1983 | 1969 | 1980 | 1982 | 1975 | 1983 | 1982 | 1962 | 1983 | 1966 | 1981 |
| Lowest Mean Min. Temperature (F) | -2.0 | 9.2 | 18.5 | 28.1 | 35.5 | 41.4 | 42.8 | 41.9 | 33.8 | 24.3 | 12.9 | 6.9 | 29.4 |
| Year Lowest Occurred | 1979 | 1964 | 1965 | 1982 | 1968 | 1966 | 1962 | 1967 | 1961 | 1974 | 1985 | 1978 | 1985 |
| Mean Precipitation (in.) | 2.38 | 1.86 | 1.89 | 1.51 | 1.96 | 1.51 | 0.87 | 1.10 | 1.13 | 1.25 | 2.67 | 3.09 | 21.22 |
| Highest Precipitation (in.) | 5.81 | 3.58 | 3.97 | 3.02 | 6.42 | 4.01 | 3.17 | 3.79 | 2.76 | 3.44 | 8.32 | 5.64 | 32.77 |
| Year Highest Occurred | 1983 | 1961 | 1987 | 1983 | 1990 | 1984 | 1983 | 1976 | 1982 | 1968 | 1973 | 1973 | 1983 |
| Lowest Precipitation (in.) | 0.31 | 0.42 | 0.31 | 0.13 | 0.41 | 0.30 | 0.00 | 0.00 | 0.00 | 0.00 | 0.29 | 0.50 | 11.23 |
| Year Lowest Occurred | 1963 | 1966 | 1965 | 1977 | 1970 | 1974 | 1985 | 1986 | 1990 | 1978 | 1976 | 1985 | 1985 |
| Heating Degree Days (F) | 1246. | 958. | 822. | 561. | 341. | 156. | 58. | 81. | 268. | 601. | 906. | 1194. | 7192. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 42. | 98. | 112. | 22. | 0. | 0. | 0. | 274. |