| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 20.0 | 26.2 | 39.0 | 55.7 | 69.5 | 78.8 | 83.7 | 80.8 | 71.2 | 59.5 | 40.8 | 24.0 | 54.1 |
| Highest Mean Max. Temperature (F) | 33.3 | 41.3 | 52.9 | 66.7 | 78.1 | 87.1 | 88.3 | 88.1 | 77.7 | 69.8 | 47.8 | 32.3 | 58.7 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1988 | 1988 | 1964 | 1983 | 1978 | 1963 | 1980 | 1965 | 1987 |
| Lowest Mean Max. Temperature (F) | 7.8 | 16.5 | 26.4 | 42.7 | 63.9 | 70.9 | 77.4 | 76.0 | 59.6 | 53.6 | 32.2 | 9.9 | 51.0 |
| Year Lowest Occurred | 1977 | 1989 | 1965 | 1975 | 1974 | 1969 | 1962 | 1985 | 1965 | 1987 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 9.6 | 15.8 | 29.7 | 45.2 | 58.0 | 67.5 | 72.4 | 69.4 | 59.8 | 48.1 | 32.0 | 15.2 | 43.6 |
| Highest Mean Temperature (F) | 23.7 | 31.1 | 39.8 | 52.7 | 65.4 | 74.0 | 76.8 | 76.1 | 64.5 | 56.6 | 37.7 | 25.8 | 48.2 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1983 | 1983 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Temperature (F) | -3.3 | 5.7 | 16.4 | 36.6 | 52.7 | 59.9 | 67.6 | 66.1 | 51.4 | 42.2 | 23.1 | -0.2 | 40.8 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1967 | 1969 | 1971 | 1986 | 1965 | 1976 | 1985 | 1983 | 1972 |
| Mean Min. Temperature (F) | -0.9 | 5.3 | 20.4 | 34.5 | 46.4 | 56.2 | 61.1 | 58.1 | 48.4 | 36.6 | 23.1 | 6.4 | 33.0 |
| Highest Mean Min. Temperature (F) | 14.0 | 20.9 | 32.0 | 39.7 | 53.4 | 60.8 | 66.0 | 64.0 | 51.6 | 43.3 | 28.1 | 19.2 | 37.7 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1988 | 1983 | 1983 | 1990 | 1963 | 1987 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -14.3 | -6.1 | 6.3 | 28.2 | 40.1 | 48.9 | 56.0 | 53.8 | 43.0 | 29.0 | 13.9 | -10.2 | 30.1 |
| Year Lowest Occurred | 1977 | 1967 | 1965 | 1961 | 1967 | 1969 | 1971 | 1967 | 1974 | 1976 | 1976 | 1983 | 1978 |
| Mean Precipitation (in.) | 0.64 | 0.62 | 1.61 | 2.39 | 3.07 | 4.36 | 3.45 | 3.61 | 2.48 | 2.05 | 1.40 | 0.83 | 26.51 |
| Highest Precipitation (in.) | 2.31 | 1.59 | 5.26 | 5.60 | 7.05 | 9.06 | 7.77 | 6.93 | 5.06 | 6.50 | 4.44 | 2.45 | 35.78 |
| Year Highest Occurred | 1969 | 1971 | 1965 | 1986 | 1963 | 1990 | 1962 | 1981 | 1968 | 1968 | 1970 | 1969 | 1985 |
| Lowest Precipitation (in.) | 0.01 | 0.00 | 0.12 | 0.15 | 0.62 | 0.09 | 0.54 | 0.65 | 0.74 | 0.11 | 0.00 | 0.00 | 14.19 |
| Year Lowest Occurred | 1974 | 1964 | 1967 | 1987 | 1967 | 1988 | 1975 | 1990 | 1974 | 1989 | 1967 | 1962 | 1976 |
| Heating Degree Days (F) | 1717. | 1378. | 1094. | 594. | 251. | 49. | 11. | 27. | 174. | 524. | 990. | 1544. | 8353. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 34. | 124. | 240. | 164. | 18. | 0. | 0. | 0. | 580. |