| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 21.3 | 27.6 | 39.7 | 57.0 | 70.0 | 77.9 | 82.7 | 79.7 | 70.0 | 58.8 | 40.8 | 25.6 | 54.3 |
| Highest Mean Max. Temperature (F) | 34.6 | 39.7 | 50.1 | 67.6 | 79.1 | 85.7 | 90.4 | 85.5 | 76.1 | 68.3 | 47.7 | 32.8 | 58.8 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1988 | 1969 | 1978 | 1963 | 1990 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 10.7 | 19.3 | 30.7 | 47.3 | 64.4 | 70.1 | 77.8 | 75.9 | 61.9 | 53.5 | 32.8 | 14.6 | 51.0 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1983 | 1969 | 1962 | 1985 | 1965 | 1980 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 10.0 | 15.5 | 28.7 | 44.3 | 56.2 | 64.8 | 69.8 | 67.1 | 58.1 | 47.1 | 31.7 | 16.2 | 42.5 |
| Highest Mean Temperature (F) | 24.6 | 27.7 | 38.5 | 51.4 | 64.1 | 70.4 | 75.1 | 72.7 | 63.1 | 55.0 | 37.6 | 24.6 | 46.9 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1988 | 1988 | 1978 | 1963 | 1990 | 1965 | 1987 |
| Lowest Mean Temperature (F) | -1.0 | 6.2 | 18.2 | 37.2 | 50.2 | 58.5 | 65.4 | 63.5 | 52.5 | 41.5 | 23.3 | 4.6 | 39.8 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1967 | 1969 | 1962 | 1985 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -1.4 | 3.4 | 17.6 | 31.5 | 42.3 | 51.7 | 56.8 | 54.4 | 46.1 | 35.4 | 22.6 | 6.8 | 30.6 |
| Highest Mean Min. Temperature (F) | 14.6 | 17.5 | 29.6 | 36.8 | 49.9 | 57.2 | 60.9 | 60.4 | 50.3 | 43.2 | 28.0 | 17.3 | 35.0 |
| Year Highest Occurred | 1990 | 1983 | 1973 | 1985 | 1962 | 1971 | 1987 | 1988 | 1990 | 1971 | 1987 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -12.6 | -7.3 | 5.6 | 27.0 | 35.5 | 45.6 | 52.9 | 50.4 | 39.7 | 27.9 | 12.3 | -6.8 | 27.6 |
| Year Lowest Occurred | 1977 | 1978 | 1965 | 1975 | 1967 | 1982 | 1971 | 1977 | 1974 | 1976 | 1976 | 1985 | 1978 |
| Mean Precipitation (in.) | 1.06 | 0.85 | 1.90 | 2.64 | 3.51 | 4.42 | 3.87 | 4.58 | 4.06 | 2.55 | 1.61 | 1.24 | 32.29 |
| Highest Precipitation (in.) | 3.92 | 3.22 | 4.41 | 5.67 | 7.02 | 9.43 | 8.96 | 7.88 | 9.34 | 6.02 | 4.61 | 3.92 | 43.23 |
| Year Highest Occurred | 1982 | 1981 | 1977 | 1975 | 1962 | 1967 | 1987 | 1975 | 1986 | 1970 | 1983 | 1965 | 1965 |
| Lowest Precipitation (in.) | 0.02 | 0.05 | 0.32 | 0.33 | 0.83 | 1.71 | 1.21 | 1.24 | 1.26 | 0.55 | 0.03 | 0.29 | 15.54 |
| Year Lowest Occurred | 1981 | 1969 | 1978 | 1987 | 1976 | 1988 | 1976 | 1961 | 1976 | 1965 | 1976 | 1980 | 1976 |
| Heating Degree Days (F) | 1705. | 1386. | 1125. | 621. | 298. | 85. | 22. | 47. | 215. | 555. | 999. | 1513. | 8571. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 25. | 79. | 171. | 112. | 8. | 0. | 0. | 0. | 395. |