| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 12.0 | 18.3 | 31.3 | 50.7 | 67.3 | 76.0 | 80.4 | 79.4 | 68.0 | 55.1 | 34.2 | 17.3 | 49.2 |
| Highest Mean Max. Temperature (F) | 24.4 | 31.9 | 42.1 | 64.8 | 79.0 | 85.6 | 85.3 | 88.4 | 75.3 | 68.4 | 44.7 | 27.6 | 53.4 |
| Year Highest Occurred | 1990 | 1984 | 1977 | 1977 | 1977 | 1988 | 1989 | 1961 | 1976 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | -2.8 | 2.4 | 22.5 | 37.5 | 56.7 | 67.7 | 75.1 | 71.5 | 57.9 | 46.3 | 22.2 | 6.3 | 44.8 |
| Year Lowest Occurred | 1966 | 1979 | 1965 | 1979 | 1979 | 1969 | 1971 | 1985 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 1.9 | 7.7 | 21.4 | 39.4 | 53.9 | 63.6 | 68.1 | 66.1 | 55.2 | 43.4 | 25.1 | 8.1 | 37.8 |
| Highest Mean Temperature (F) | 14.9 | 23.1 | 32.6 | 49.4 | 66.3 | 71.3 | 72.4 | 72.3 | 60.4 | 54.6 | 35.7 | 19.0 | 42.4 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1977 | 1977 | 1988 | 1989 | 1961 | 1976 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Temperature (F) | -12.7 | -6.7 | 10.3 | 28.9 | 46.5 | 56.3 | 63.5 | 59.7 | 46.8 | 37.1 | 12.0 | -2.5 | 34.1 |
| Year Lowest Occurred | 1966 | 1979 | 1970 | 1979 | 1979 | 1969 | 1971 | 1977 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -8.2 | -2.9 | 11.4 | 28.0 | 40.5 | 51.3 | 55.7 | 52.8 | 42.4 | 31.7 | 16.0 | -1.1 | 26.5 |
| Highest Mean Min. Temperature (F) | 5.4 | 14.2 | 24.7 | 35.1 | 53.5 | 57.7 | 59.8 | 57.4 | 46.5 | 40.8 | 26.6 | 11.3 | 31.3 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1977 | 1963 | 1974 | 1983 | 1978 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -22.5 | -15.7 | -2.3 | 20.3 | 34.7 | 44.9 | 51.9 | 46.0 | 35.7 | 27.2 | 1.8 | -11.3 | 23.3 |
| Year Lowest Occurred | 1966 | 1979 | 1970 | 1979 | 1983 | 1969 | 1971 | 1977 | 1965 | 1987 | 1985 | 1983 | 1966 |
| Mean Precipitation (in.) | 0.44 | 0.38 | 0.74 | 1.40 | 2.34 | 3.15 | 3.13 | 2.37 | 1.96 | 1.27 | 0.52 | 0.49 | 18.19 |
| Highest Precipitation (in.) | 1.26 | 1.49 | 1.92 | 3.57 | 7.56 | 8.01 | 7.44 | 7.41 | 5.41 | 4.03 | 2.66 | 1.56 | 26.34 |
| Year Highest Occurred | 1969 | 1987 | 1966 | 1970 | 1962 | 1963 | 1986 | 1980 | 1977 | 1984 | 1986 | 1963 | 1964 |
| Lowest Precipitation (in.) | 0.00 | 0.03 | 0.03 | 0.00 | 0.52 | 0.65 | 0.44 | 0.32 | 0.27 | 0.10 | 0.04 | 0.02 | 10.94 |
| Year Lowest Occurred | 1973 | 1968 | 1961 | 1988 | 1984 | 1978 | 1989 | 1961 | 1976 | 1990 | 1976 | 1981 | 1989 |
| Heating Degree Days (F) | 1956. | 1604. | 1352. | 768. | 370. | 129. | 33. | 98. | 304. | 670. | 1197. | 1764. | 10245. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 25. | 87. | 129. | 132. | 10. | 0. | 0. | 0. | 383. |