| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 31.9 | 35.7 | 40.5 | 49.6 | 61.6 | 72.2 | 79.4 | 77.2 | 69.3 | 58.5 | 42.8 | 33.7 | 54.4 |
| Highest Mean Max. Temperature (F) | 39.9 | 40.1 | 47.7 | 56.3 | 67.3 | 78.7 | 83.7 | 82.9 | 74.8 | 65.5 | 48.9 | 43.9 | 56.6 |
| Year Highest Occurred | 1981 | 1970 | 1986 | 1966 | 1963 | 1977 | 1964 | 1969 | 1990 | 1987 | 1981 | 1980 | 1987 |
| Lowest Mean Max. Temperature (F) | 24.2 | 28.7 | 32.5 | 40.8 | 53.7 | 66.5 | 75.6 | 70.6 | 61.0 | 47.5 | 35.7 | 28.6 | 52.0 |
| Year Lowest Occurred | 1979 | 1964 | 1965 | 1983 | 1983 | 1983 | 1986 | 1968 | 1965 | 1969 | 1979 | 1967 | 1975 |
| Mean Temperature (F) | 16.1 | 19.2 | 26.2 | 35.2 | 45.4 | 53.4 | 60.0 | 58.4 | 50.7 | 41.1 | 28.1 | 19.1 | 37.7 |
| Highest Mean Temperature (F) | 23.3 | 23.7 | 33.1 | 40.4 | 50.6 | 56.9 | 62.8 | 63.3 | 56.0 | 46.2 | 34.4 | 28.7 | 40.7 |
| Year Highest Occurred | 1981 | 1980 | 1986 | 1990 | 1969 | 1990 | 1966 | 1969 | 1990 | 1963 | 1981 | 1980 | 1981 |
| Lowest Mean Temperature (F) | 9.4 | 11.9 | 19.0 | 27.0 | 40.7 | 49.4 | 57.2 | 54.5 | 45.3 | 34.5 | 21.1 | 15.1 | 35.1 |
| Year Lowest Occurred | 1979 | 1964 | 1964 | 1975 | 1983 | 1975 | 1973 | 1974 | 1961 | 1976 | 1979 | 1972 | 1975 |
| Mean Min. Temperature (F) | 0.2 | 2.6 | 12.0 | 20.6 | 29.1 | 34.6 | 40.6 | 39.4 | 32.0 | 23.7 | 13.4 | 4.5 | 21.1 |
| Highest Mean Min. Temperature (F) | 8.0 | 9.0 | 18.5 | 26.3 | 33.9 | 37.9 | 44.5 | 43.8 | 37.1 | 28.8 | 20.7 | 13.8 | 25.1 |
| Year Highest Occurred | 1965 | 1983 | 1986 | 1990 | 1969 | 1986 | 1984 | 1982 | 1990 | 1981 | 1983 | 1983 | 1981 |
| Lowest Mean Min. Temperature (F) | -7.4 | -5.2 | 2.9 | 11.7 | 24.6 | 32.0 | 37.5 | 34.5 | 27.4 | 15.9 | 6.5 | -1.4 | 17.5 |
| Year Lowest Occurred | 1962 | 1975 | 1977 | 1975 | 1988 | 1966 | 1988 | 1985 | 1985 | 1976 | 1979 | 1972 | 1976 |
| Mean Precipitation (in.) | 1.35 | 1.02 | 1.28 | 1.19 | 1.39 | 1.39 | 1.67 | 1.71 | 1.64 | 1.38 | 1.23 | 1.44 | 16.69 |
| Highest Precipitation (in.) | 3.51 | 2.56 | 3.73 | 2.65 | 4.35 | 3.68 | 2.94 | 3.58 | 5.12 | 3.94 | 4.20 | 4.98 | 25.91 |
| Year Highest Occurred | 1979 | 1962 | 1965 | 1990 | 1981 | 1969 | 1977 | 1983 | 1961 | 1969 | 1965 | 1983 | 1983 |
| Lowest Precipitation (in.) | 0.21 | 0.17 | 0.14 | 0.28 | 0.20 | 0.00 | 0.17 | 0.44 | 0.00 | 0.18 | 0.37 | 0.10 | 11.37 |
| Year Lowest Occurred | 1981 | 1981 | 1969 | 1982 | 1970 | 1980 | 1972 | 1985 | 1966 | 1988 | 1980 | 1976 | 1988 |
| Heating Degree Days (F) | 1516. | 1282. | 1203. | 894. | 608. | 348. | 160. | 211. | 429. | 741. | 1107. | 1423. | 9922. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 6. | 0. | 0. | 0. | 0. | 6. |