| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 17.1 | 23.3 | 36.9 | 54.9 | 68.4 | 77.8 | 84.0 | 82.2 | 70.4 | 58.4 | 38.2 | 22.1 | 52.8 |
| Highest Mean Max. Temperature (F) | 32.8 | 37.4 | 48.2 | 66.8 | 78.2 | 89.0 | 88.5 | 90.0 | 77.0 | 69.7 | 47.5 | 33.4 | 58.0 |
| Year Highest Occurred | 1990 | 1987 | 1981 | 1985 | 1977 | 1988 | 1974 | 1983 | 1978 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 3.6 | 8.5 | 25.4 | 42.1 | 59.1 | 70.0 | 77.4 | 75.3 | 58.6 | 49.9 | 27.5 | 6.9 | 48.0 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1979 | 1979 | 1969 | 1962 | 1968 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 6.1 | 12.0 | 26.3 | 42.7 | 55.3 | 64.9 | 70.4 | 68.1 | 57.0 | 45.1 | 27.7 | 11.8 | 40.6 |
| Highest Mean Temperature (F) | 22.7 | 27.9 | 35.7 | 49.9 | 64.6 | 73.7 | 75.1 | 75.8 | 63.2 | 54.6 | 36.1 | 22.5 | 45.9 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1983 | 1983 | 1978 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Temperature (F) | -7.5 | -2.9 | 15.5 | 34.0 | 47.8 | 58.8 | 64.9 | 58.9 | 48.6 | 40.1 | 15.6 | -2.5 | 36.6 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1979 | 1979 | 1969 | 1985 | 1968 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -5.0 | 0.7 | 15.7 | 30.4 | 42.1 | 51.9 | 56.7 | 53.9 | 43.4 | 31.7 | 17.1 | 1.4 | 28.3 |
| Highest Mean Min. Temperature (F) | 12.5 | 18.3 | 27.2 | 34.3 | 51.0 | 58.4 | 62.9 | 61.5 | 49.4 | 39.4 | 24.6 | 15.0 | 33.9 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1983 | 1983 | 1978 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -18.5 | -14.3 | 5.5 | 25.5 | 36.5 | 47.0 | 42.2 | 42.5 | 37.5 | 25.0 | 3.7 | -11.9 | 25.1 |
| Year Lowest Occurred | 1982 | 1979 | 1969 | 1961 | 1979 | 1982 | 1985 | 1968 | 1974 | 1976 | 1985 | 1983 | 1985 |
| Mean Precipitation (in.) | 0.46 | 0.41 | 0.96 | 1.88 | 2.41 | 3.34 | 2.86 | 2.40 | 2.03 | 1.44 | 0.61 | 0.53 | 19.33 |
| Highest Precipitation (in.) | 1.54 | 1.78 | 3.10 | 6.64 | 6.78 | 16.14 | 10.44 | 8.03 | 6.77 | 6.04 | 3.49 | 1.77 | 30.27 |
| Year Highest Occurred | 1969 | 1979 | 1977 | 1986 | 1972 | 1975 | 1962 | 1966 | 1978 | 1982 | 1977 | 1968 | 1962 |
| Lowest Precipitation (in.) | 0.00 | 0.02 | 0.23 | 0.00 | 0.17 | 0.48 | 0.36 | 0.52 | 0.18 | 0.16 | 0.00 | 0.00 | 9.36 |
| Year Lowest Occurred | 1961 | 1983 | 1971 | 1988 | 1976 | 1987 | 1976 | 1970 | 1974 | 1987 | 1990 | 1986 | 1976 |
| Heating Degree Days (F) | 1826. | 1484. | 1200. | 669. | 321. | 91. | 29. | 68. | 255. | 617. | 1119. | 1649. | 9328. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 20. | 88. | 197. | 164. | 15. | 0. | 0. | 0. | 484. |