| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 33.0 | 39.8 | 48.3 | 58.8 | 67.7 | 76.2 | 84.3 | 83.6 | 71.2 | 58.2 | 42.8 | 34.1 | 58.2 |
| Highest Mean Max. Temperature (F) | 40.6 | 46.7 | 57.7 | 67.2 | 72.7 | 83.9 | 93.2 | 90.7 | 81.9 | 65.9 | 49.2 | 41.9 | 62.1 |
| Year Highest Occurred | 1990 | 1961 | 1986 | 1987 | 1976 | 1961 | 1985 | 1967 | 1967 | 1988 | 1990 | 1980 | 1988 |
| Lowest Mean Max. Temperature (F) | 13.3 | 25.1 | 41.3 | 51.3 | 61.8 | 68.7 | 77.3 | 77.6 | 61.1 | 52.5 | 28.8 | 21.6 | 55.7 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1970 | 1978 | 1981 | 1983 | 1980 | 1965 | 1969 | 1985 | 1983 | 1985 |
| Mean Temperature (F) | 25.5 | 31.1 | 37.4 | 45.7 | 53.4 | 61.1 | 66.6 | 65.9 | 56.0 | 45.5 | 34.5 | 26.7 | 45.8 |
| Highest Mean Temperature (F) | 34.1 | 39.2 | 45.4 | 51.7 | 57.8 | 66.5 | 73.0 | 71.1 | 63.6 | 51.7 | 40.1 | 34.1 | 48.9 |
| Year Highest Occurred | 1990 | 1961 | 1986 | 1987 | 1987 | 1986 | 1985 | 1961 | 1967 | 1988 | 1990 | 1980 | 1988 |
| Lowest Mean Temperature (F) | 3.6 | 15.7 | 29.3 | 40.5 | 49.8 | 56.3 | 61.8 | 60.2 | 48.7 | 42.0 | 22.1 | 14.8 | 43.4 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1975 | 1974 | 1981 | 1983 | 1980 | 1965 | 1969 | 1985 | 1983 | 1985 |
| Mean Min. Temperature (F) | 17.9 | 22.4 | 26.4 | 32.5 | 39.1 | 45.9 | 48.9 | 48.2 | 40.7 | 32.8 | 26.2 | 19.3 | 33.4 |
| Highest Mean Min. Temperature (F) | 28.6 | 31.7 | 33.1 | 36.2 | 43.0 | 50.0 | 54.2 | 52.5 | 45.7 | 37.4 | 32.0 | 28.1 | 35.6 |
| Year Highest Occurred | 1981 | 1961 | 1986 | 1987 | 1987 | 1970 | 1975 | 1961 | 1966 | 1988 | 1988 | 1973 | 1988 |
| Lowest Mean Min. Temperature (F) | -6.2 | 6.3 | 17.2 | 28.5 | 36.7 | 42.0 | 45.1 | 42.8 | 36.2 | 28.8 | 15.4 | 7.9 | 30.4 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1967 | 1974 | 1976 | 1986 | 1980 | 1965 | 1971 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 1.20 | 0.70 | 1.17 | 1.37 | 2.46 | 2.51 | 1.23 | 1.35 | 1.50 | 1.06 | 0.99 | 1.12 | 16.66 |
| Highest Precipitation (in.) | 3.24 | 1.99 | 2.47 | 3.11 | 8.19 | 5.21 | 3.84 | 3.84 | 4.44 | 3.32 | 2.34 | 2.55 | 24.69 |
| Year Highest Occurred | 1963 | 1986 | 1987 | 1984 | 1980 | 1980 | 1987 | 1985 | 1968 | 1975 | 1966 | 1964 | 1980 |
| Lowest Precipitation (in.) | 0.17 | 0.06 | 0.25 | 0.08 | 0.42 | 0.23 | 0.00 | 0.00 | 0.00 | 0.05 | 0.23 | 0.22 | 11.91 |
| Year Lowest Occurred | 1987 | 1967 | 1973 | 1977 | 1963 | 1979 | 1985 | 1967 | 1990 | 1978 | 1987 | 1976 | 1973 |
| Heating Degree Days (F) | 1225. | 949. | 856. | 579. | 360. | 153. | 60. | 76. | 289. | 605. | 915. | 1187. | 7254. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 36. | 110. | 104. | 19. | 0. | 0. | 0. | 269. |