| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 28.1 | 31.6 | 37.9 | 49.1 | 59.8 | 70.8 | 77.8 | 75.4 | 66.7 | 55.3 | 39.7 | 30.4 | 51.9 |
| Highest Mean Max. Temperature (F) | 42.3 | 38.6 | 46.0 | 57.2 | 65.9 | 78.4 | 82.1 | 79.6 | 74.2 | 61.9 | 46.4 | 44.0 | 55.7 |
| Year Highest Occurred | 1981 | 1987 | 1986 | 1981 | 1969 | 1977 | 1989 | 1983 | 1979 | 1963 | 1981 | 1980 | 1981 |
| Lowest Mean Max. Temperature (F) | 19.5 | 23.9 | 25.3 | 41.1 | 54.6 | 63.6 | 73.7 | 69.4 | 57.1 | 43.6 | 32.3 | 24.1 | 49.0 |
| Year Lowest Occurred | 1962 | 1964 | 1965 | 1973 | 1968 | 1969 | 1973 | 1968 | 1961 | 1969 | 1968 | 1967 | 1968 |
| Mean Temperature (F) | 15.7 | 18.7 | 25.1 | 34.7 | 43.8 | 53.4 | 58.9 | 56.3 | 48.4 | 38.4 | 26.3 | 18.0 | 36.5 |
| Highest Mean Temperature (F) | 23.4 | 26.4 | 32.9 | 40.6 | 47.2 | 59.3 | 61.1 | 61.2 | 53.8 | 43.3 | 31.3 | 30.2 | 39.9 |
| Year Highest Occurred | 1981 | 1976 | 1986 | 1981 | 1969 | 1977 | 1964 | 1983 | 1990 | 1988 | 1981 | 1980 | 1981 |
| Lowest Mean Temperature (F) | 5.4 | 9.4 | 12.0 | 28.5 | 39.6 | 49.6 | 56.2 | 53.1 | 43.1 | 31.9 | 18.4 | 11.9 | 33.6 |
| Year Lowest Occurred | 1962 | 1973 | 1965 | 1984 | 1968 | 1969 | 1962 | 1974 | 1961 | 1969 | 1979 | 1966 | 1968 |
| Mean Min. Temperature (F) | 3.3 | 5.8 | 12.2 | 20.3 | 27.7 | 35.9 | 39.9 | 37.1 | 30.0 | 21.5 | 12.8 | 5.5 | 21.0 |
| Highest Mean Min. Temperature (F) | 12.2 | 15.7 | 20.5 | 24.0 | 30.9 | 40.2 | 43.1 | 42.7 | 34.8 | 26.0 | 19.1 | 16.3 | 24.0 |
| Year Highest Occurred | 1969 | 1976 | 1974 | 1981 | 1987 | 1977 | 1984 | 1983 | 1972 | 1972 | 1970 | 1980 | 1981 |
| Lowest Mean Min. Temperature (F) | -8.8 | -5.9 | -1.4 | 15.3 | 24.6 | 32.8 | 36.7 | 31.7 | 24.3 | 16.5 | 3.2 | -1.9 | 18.1 |
| Year Lowest Occurred | 1962 | 1973 | 1965 | 1984 | 1968 | 1982 | 1972 | 1974 | 1974 | 1970 | 1979 | 1966 | 1968 |
| Mean Precipitation (in.) | 0.53 | 0.54 | 0.76 | 0.91 | 1.24 | 1.04 | 1.23 | 1.12 | 1.19 | 0.92 | 0.73 | 0.62 | 10.83 |
| Highest Precipitation (in.) | 2.26 | 1.76 | 1.47 | 2.35 | 3.16 | 3.04 | 2.80 | 2.99 | 3.75 | 2.44 | 2.68 | 1.64 | 16.60 |
| Year Highest Occurred | 1980 | 1986 | 1985 | 1985 | 1978 | 1969 | 1985 | 1963 | 1961 | 1985 | 1985 | 1978 | 1985 |
| Lowest Precipitation (in.) | 0.05 | 0.03 | 0.12 | 0.34 | 0.05 | 0.04 | 0.12 | 0.28 | 0.19 | 0.05 | 0.09 | 0.10 | 5.92 |
| Year Lowest Occurred | 1986 | 1973 | 1962 | 1981 | 1974 | 1980 | 1962 | 1974 | 1979 | 1964 | 1974 | 1963 | 1964 |
| Heating Degree Days (F) | 1528. | 1296. | 1237. | 909. | 657. | 348. | 189. | 273. | 498. | 825. | 1161. | 1457. | 10378. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |