| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 28.9 | 32.2 | 36.2 | 41.3 | 49.1 | 57.2 | 65.4 | 65.9 | 58.2 | 47.4 | 34.1 | 29.2 | 45.4 |
| Highest Mean Max. Temperature (F) | 34.4 | 39.8 | 41.6 | 47.1 | 56.8 | 66.9 | 74.0 | 75.3 | 67.5 | 54.1 | 39.9 | 36.2 | 47.7 |
| Year Highest Occurred | 1983 | 1963 | 1986 | 1987 | 1969 | 1961 | 1985 | 1967 | 1967 | 1987 | 1976 | 1976 | 1987 |
| Lowest Mean Max. Temperature (F) | 19.6 | 23.7 | 30.7 | 34.2 | 43.9 | 50.8 | 58.5 | 58.7 | 49.2 | 40.9 | 21.5 | 21.3 | 43.3 |
| Year Lowest Occurred | 1969 | 1989 | 1971 | 1970 | 1962 | 1971 | 1983 | 1975 | 1978 | 1990 | 1985 | 1983 | 1964 |
| Mean Temperature (F) | 24.0 | 27.0 | 29.8 | 34.3 | 41.2 | 48.4 | 55.1 | 55.8 | 49.0 | 40.3 | 29.5 | 24.4 | 38.2 |
| Highest Mean Temperature (F) | 29.8 | 34.0 | 35.1 | 40.0 | 46.3 | 58.2 | 60.8 | 63.1 | 55.8 | 47.0 | 34.5 | 31.0 | 40.3 |
| Year Highest Occurred | 1983 | 1963 | 1986 | 1990 | 1969 | 1969 | 1985 | 1969 | 1967 | 1988 | 1981 | 1976 | 1987 |
| Lowest Mean Temperature (F) | 13.6 | 18.2 | 23.9 | 29.0 | 36.9 | 42.5 | 50.2 | 49.9 | 43.9 | 35.5 | 16.9 | 16.4 | 36.1 |
| Year Lowest Occurred | 1969 | 1989 | 1971 | 1972 | 1974 | 1976 | 1986 | 1975 | 1978 | 1984 | 1985 | 1983 | 1975 |
| Mean Min. Temperature (F) | 19.0 | 21.7 | 23.4 | 27.1 | 33.1 | 39.5 | 44.8 | 45.6 | 39.8 | 33.1 | 24.9 | 19.5 | 31.0 |
| Highest Mean Min. Temperature (F) | 26.4 | 28.2 | 28.6 | 33.2 | 36.1 | 51.4 | 50.5 | 54.9 | 45.1 | 40.5 | 30.0 | 26.1 | 32.9 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1990 | 1983 | 1969 | 1969 | 1969 | 1969 | 1988 | 1981 | 1966 | 1969 |
| Lowest Mean Min. Temperature (F) | 7.5 | 12.6 | 17.1 | 21.1 | 29.7 | 33.8 | 41.0 | 41.1 | 36.1 | 28.8 | 12.3 | 11.4 | 28.7 |
| Year Lowest Occurred | 1969 | 1989 | 1971 | 1972 | 1974 | 1976 | 1986 | 1975 | 1964 | 1984 | 1985 | 1983 | 1985 |
| Mean Precipitation (in.) | 13.69 | 9.19 | 7.56 | 4.98 | 3.55 | 2.86 | 1.43 | 1.99 | 3.43 | 6.49 | 12.16 | 13.69 | 81.02 |
| Highest Precipitation (in.) | 25.90 | 22.82 | 13.03 | 8.99 | 9.32 | 8.04 | 5.33 | 5.88 | 8.94 | 20.49 | 30.31 | 28.07 | 119.27 |
| Year Highest Occurred | 1974 | 1972 | 1964 | 1981 | 1984 | 1981 | 1983 | 1976 | 1969 | 1967 | 1990 | 1975 | 1990 |
| Lowest Precipitation (in.) | 0.92 | 1.79 | 2.42 | 2.00 | 0.52 | 0.09 | 0.00 | 0.06 | 0.29 | 0.12 | 2.59 | 2.22 | 55.88 |
| Year Lowest Occurred | 1985 | 1973 | 1981 | 1971 | 1971 | 1970 | 1985 | 1970 | 1989 | 1987 | 1979 | 1985 | 1970 |
| Heating Degree Days (F) | 1271. | 1064. | 1091. | 921. | 738. | 498. | 314. | 303. | 480. | 766. | 1065. | 1259. | 9770. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 7. | 18. | 0. | 0. | 0. | 0. | 25. |