| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 31.6 | 33.9 | 35.4 | 40.1 | 46.7 | 53.5 | 60.5 | 61.4 | 55.6 | 47.3 | 35.8 | 31.9 | 44.5 |
| Highest Mean Max. Temperature (F) | 40.7 | 41.1 | 41.7 | 46.9 | 52.3 | 61.2 | 68.9 | 70.8 | 63.9 | 57.7 | 44.8 | 40.3 | 48.3 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1987 | 1969 | 1986 | 1985 | 1986 | 1967 | 1988 | 1976 | 1985 | 1987 |
| Lowest Mean Max. Temperature (F) | 21.6 | 25.9 | 30.4 | 31.3 | 40.1 | 45.3 | 54.2 | 51.0 | 49.1 | 40.0 | 26.5 | 23.7 | 41.9 |
| Year Lowest Occurred | 1969 | 1989 | 1971 | 1970 | 1962 | 1980 | 1983 | 1980 | 1972 | 1975 | 1985 | 1964 | 1964 |
| Mean Temperature (F) | 25.6 | 27.6 | 28.7 | 32.5 | 38.6 | 45.2 | 51.4 | 52.6 | 47.3 | 40.1 | 30.0 | 26.1 | 37.1 |
| Highest Mean Temperature (F) | 34.8 | 34.7 | 33.6 | 38.5 | 44.2 | 52.0 | 58.6 | 61.3 | 54.3 | 48.9 | 37.6 | 33.7 | 40.0 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1989 | 1969 | 1961 | 1985 | 1967 | 1963 | 1988 | 1976 | 1985 | 1987 |
| Lowest Mean Temperature (F) | 15.9 | 19.7 | 24.1 | 26.1 | 33.3 | 39.7 | 46.2 | 45.7 | 42.1 | 33.5 | 19.7 | 17.2 | 35.1 |
| Year Lowest Occurred | 1969 | 1989 | 1971 | 1970 | 1962 | 1980 | 1986 | 1980 | 1977 | 1990 | 1985 | 1983 | 1964 |
| Mean Min. Temperature (F) | 19.6 | 21.3 | 22.0 | 24.9 | 30.4 | 36.8 | 42.3 | 43.8 | 39.0 | 32.9 | 24.2 | 20.2 | 29.8 |
| Highest Mean Min. Temperature (F) | 28.8 | 28.3 | 26.2 | 31.0 | 36.0 | 43.3 | 48.3 | 52.0 | 45.9 | 40.0 | 30.4 | 27.1 | 31.7 |
| Year Highest Occurred | 1981 | 1963 | 1978 | 1989 | 1969 | 1961 | 1985 | 1967 | 1974 | 1988 | 1976 | 1985 | 1987 |
| Lowest Mean Min. Temperature (F) | 10.2 | 13.4 | 17.4 | 20.2 | 26.5 | 30.9 | 36.8 | 38.7 | 33.5 | 25.5 | 12.8 | 9.9 | 27.9 |
| Year Lowest Occurred | 1969 | 1989 | 1975 | 1972 | 1962 | 1976 | 1986 | 1975 | 1961 | 1990 | 1985 | 1983 | 1982 |
| Mean Precipitation (in.) | 18.32 | 13.71 | 11.97 | 8.42 | 5.18 | 3.76 | 1.95 | 2.79 | 4.96 | 8.94 | 17.20 | 18.10 | 115.30 |
| Highest Precipitation (in.) | 31.82 | 30.68 | 21.14 | 17.15 | 11.79 | 10.44 | 7.13 | 8.02 | 10.29 | 23.41 | 32.36 | 30.50 | 151.93 |
| Year Highest Occurred | 1972 | 1961 | 1977 | 1972 | 1984 | 1981 | 1983 | 1977 | 1977 | 1967 | 1990 | 1975 | 1975 |
| Lowest Precipitation (in.) | 1.21 | 3.71 | 2.22 | 4.21 | 1.80 | 0.27 | 0.00 | 0.13 | 0.11 | 0.25 | 3.12 | 5.47 | 70.53 |
| Year Lowest Occurred | 1985 | 1973 | 1965 | 1983 | 1982 | 1977 | 1984 | 1973 | 1975 | 1987 | 1969 | 1985 | 1969 |
| Heating Degree Days (F) | 1221. | 1047. | 1125. | 975. | 818. | 594. | 422. | 401. | 538. | 772. | 1050. | 1206. | 10169. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 17. | 7. | 0. | 0. | 0. | 24. |