| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 14.6 | 22.3 | 35.6 | 52.9 | 67.6 | 75.7 | 80.7 | 78.3 | 67.7 | 55.6 | 35.6 | 19.6 | 50.5 |
| Highest Mean Max. Temperature (F) | 27.9 | 34.5 | 44.0 | 67.4 | 78.4 | 85.8 | 85.6 | 86.2 | 74.0 | 71.3 | 46.0 | 29.3 | 55.8 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1981 | 1983 | 1967 | 1963 | 1981 | 1974 | 1987 |
| Lowest Mean Max. Temperature (F) | 2.8 | 12.7 | 25.7 | 43.9 | 57.6 | 68.0 | 75.8 | 71.7 | 57.0 | 46.6 | 26.2 | 9.5 | 47.2 |
| Year Lowest Occurred | 1966 | 1979 | 1965 | 1975 | 1979 | 1969 | 1965 | 1977 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 2.6 | 8.9 | 23.1 | 40.5 | 54.1 | 63.0 | 68.1 | 65.5 | 55.6 | 44.7 | 27.0 | 9.6 | 38.6 |
| Highest Mean Temperature (F) | 16.4 | 24.5 | 33.7 | 50.4 | 63.8 | 68.7 | 72.4 | 72.1 | 59.8 | 56.1 | 36.5 | 19.2 | 43.2 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1983 | 1983 | 1963 | 1963 | 1981 | 1974 | 1987 |
| Lowest Mean Temperature (F) | -9.1 | -0.9 | 11.3 | 33.5 | 46.7 | 56.4 | 63.0 | 59.4 | 48.1 | 37.4 | 16.5 | -1.7 | 35.9 |
| Year Lowest Occurred | 1966 | 1967 | 1965 | 1975 | 1967 | 1969 | 1971 | 1977 | 1965 | 1988 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -9.3 | -4.6 | 10.4 | 28.0 | 40.6 | 50.2 | 55.4 | 52.6 | 43.4 | 33.8 | 18.3 | -0.4 | 26.5 |
| Highest Mean Min. Temperature (F) | 5.1 | 14.5 | 23.4 | 33.3 | 49.1 | 54.9 | 60.3 | 57.9 | 47.8 | 40.8 | 26.9 | 10.6 | 30.6 |
| Year Highest Occurred | 1983 | 1987 | 1973 | 1987 | 1977 | 1963 | 1983 | 1983 | 1978 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -21.0 | -17.8 | -3.1 | 23.0 | 33.8 | 44.7 | 49.9 | 47.0 | 38.2 | 23.9 | 6.7 | -12.8 | 23.7 |
| Year Lowest Occurred | 1966 | 1967 | 1965 | 1975 | 1967 | 1969 | 1971 | 1977 | 1988 | 1988 | 1985 | 1983 | 1989 |
| Mean Precipitation (in.) | 0.62 | 0.35 | 0.80 | 1.47 | 2.59 | 3.97 | 3.39 | 3.38 | 2.73 | 2.08 | 0.88 | 0.64 | 22.90 |
| Highest Precipitation (in.) | 3.03 | 1.06 | 3.05 | 4.47 | 6.28 | 7.58 | 6.03 | 7.85 | 6.34 | 7.60 | 2.70 | 1.73 | 31.26 |
| Year Highest Occurred | 1969 | 1979 | 1966 | 1967 | 1962 | 1968 | 1978 | 1974 | 1973 | 1971 | 1977 | 1983 | 1964 |
| Lowest Precipitation (in.) | 0.04 | 0.00 | 0.02 | 0.00 | 0.53 | 0.92 | 1.27 | 0.80 | 0.59 | 0.23 | 0.03 | 0.00 | 16.41 |
| Year Lowest Occurred | 1965 | 1968 | 1984 | 1988 | 1961 | 1987 | 1967 | 1971 | 1976 | 1963 | 1976 | 1979 | 1976 |
| Heating Degree Days (F) | 1934. | 1571. | 1299. | 735. | 366. | 117. | 36. | 86. | 289. | 629. | 1140. | 1717. | 9919. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 28. | 57. | 132. | 102. | 7. | 0. | 0. | 0. | 326. |