| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 26.6 | 32.5 | 45.0 | 61.7 | 73.1 | 82.4 | 87.9 | 85.6 | 76.0 | 63.7 | 45.2 | 30.2 | 59.2 |
| Highest Mean Max. Temperature (F) | 41.4 | 46.0 | 58.8 | 71.1 | 79.4 | 91.0 | 94.0 | 91.5 | 83.3 | 73.3 | 52.6 | 40.7 | 63.0 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1981 | 1987 | 1988 | 1964 | 1983 | 1990 | 1963 | 1963 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 11.7 | 17.9 | 31.0 | 51.3 | 68.7 | 76.2 | 83.4 | 79.5 | 66.4 | 54.4 | 30.3 | 10.7 | 55.8 |
| Year Lowest Occurred | 1978 | 1978 | 1969 | 1975 | 1961 | 1969 | 1972 | 1985 | 1965 | 1969 | 1985 | 1983 | 1978 |
| Mean Temperature (F) | 16.4 | 22.6 | 34.6 | 49.2 | 60.6 | 70.1 | 75.6 | 73.2 | 63.4 | 51.4 | 35.3 | 20.8 | 47.8 |
| Highest Mean Temperature (F) | 30.8 | 35.5 | 43.3 | 56.9 | 67.5 | 77.5 | 79.8 | 79.4 | 68.8 | 59.9 | 41.9 | 30.4 | 51.8 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1981 | 1977 | 1988 | 1974 | 1983 | 1990 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Temperature (F) | 2.7 | 10.0 | 22.2 | 43.2 | 55.7 | 64.2 | 71.0 | 68.7 | 55.7 | 45.1 | 22.6 | 2.6 | 45.1 |
| Year Lowest Occurred | 1978 | 1979 | 1969 | 1983 | 1968 | 1969 | 1971 | 1985 | 1965 | 1969 | 1985 | 1983 | 1978 |
| Mean Min. Temperature (F) | 6.3 | 12.7 | 24.2 | 36.7 | 48.1 | 57.8 | 63.3 | 60.7 | 50.8 | 39.1 | 25.3 | 11.4 | 36.4 |
| Highest Mean Min. Temperature (F) | 20.1 | 24.9 | 32.8 | 42.6 | 56.1 | 63.9 | 67.1 | 67.3 | 56.2 | 46.4 | 32.0 | 21.6 | 40.6 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1981 | 1977 | 1988 | 1966 | 1983 | 1978 | 1963 | 1981 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -6.3 | -0.5 | 13.3 | 30.5 | 42.3 | 52.2 | 58.5 | 56.4 | 44.9 | 33.5 | 14.9 | -5.5 | 34.4 |
| Year Lowest Occurred | 1978 | 1979 | 1969 | 1961 | 1968 | 1969 | 1971 | 1974 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.37 | 0.48 | 1.41 | 2.33 | 2.90 | 3.60 | 2.85 | 2.58 | 2.34 | 1.61 | 0.82 | 0.49 | 21.78 |
| Highest Precipitation (in.) | 1.20 | 2.42 | 5.38 | 6.34 | 8.58 | 9.18 | 8.82 | 7.36 | 7.27 | 5.56 | 2.49 | 1.54 | 34.77 |
| Year Highest Occurred | 1975 | 1962 | 1987 | 1986 | 1972 | 1984 | 1962 | 1978 | 1986 | 1982 | 1983 | 1968 | 1962 |
| Lowest Precipitation (in.) | 0.01 | 0.00 | 0.18 | 0.31 | 0.49 | 0.48 | 0.45 | 0.37 | 0.27 | 0.00 | 0.00 | 0.00 | 11.01 |
| Year Lowest Occurred | 1972 | 1968 | 1967 | 1987 | 1975 | 1988 | 1975 | 1976 | 1980 | 1964 | 1967 | 1986 | 1980 |
| Heating Degree Days (F) | 1507. | 1187. | 942. | 474. | 181. | 25. | 0. | 9. | 115. | 422. | 891. | 1370. | 7123. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 45. | 178. | 332. | 263. | 67. | 0. | 0. | 0. | 885. |