| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 19.8 | 24.2 | 35.4 | 50.5 | 64.1 | 72.6 | 77.8 | 74.4 | 64.3 | 53.8 | 37.3 | 23.7 | 49.8 |
| Highest Mean Max. Temperature (F) | 30.8 | 31.9 | 44.0 | 57.7 | 74.8 | 78.7 | 83.2 | 79.9 | 68.8 | 67.4 | 44.3 | 30.3 | 52.0 |
| Year Highest Occurred | 1990 | 1976 | 1968 | 1977 | 1977 | 1976 | 1966 | 1969 | 1976 | 1963 | 1975 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 10.9 | 17.1 | 28.6 | 43.8 | 56.0 | 63.3 | 73.8 | 69.8 | 58.4 | 45.9 | 30.9 | 14.1 | 47.4 |
| Year Lowest Occurred | 1963 | 1963 | 1984 | 1983 | 1983 | 1969 | 1971 | 1964 | 1965 | 1987 | 1976 | 1983 | 1985 |
| Mean Temperature (F) | 8.1 | 10.7 | 23.2 | 38.2 | 50.6 | 59.3 | 64.5 | 61.5 | 52.2 | 42.6 | 28.4 | 14.1 | 37.8 |
| Highest Mean Temperature (F) | 18.9 | 20.4 | 32.8 | 43.5 | 59.6 | 63.6 | 69.0 | 65.7 | 56.9 | 51.5 | 33.6 | 21.9 | 40.1 |
| Year Highest Occurred | 1990 | 1961 | 1973 | 1977 | 1977 | 1976 | 1983 | 1983 | 1978 | 1963 | 1963 | 1965 | 1961 |
| Lowest Mean Temperature (F) | -0.6 | 3.2 | 15.3 | 31.3 | 43.9 | 52.6 | 60.6 | 57.6 | 47.7 | 35.2 | 21.4 | 3.5 | 35.4 |
| Year Lowest Occurred | 1977 | 1979 | 1984 | 1975 | 1967 | 1969 | 1971 | 1986 | 1974 | 1987 | 1976 | 1989 | 1972 |
| Mean Min. Temperature (F) | -3.7 | -2.9 | 11.0 | 25.9 | 37.2 | 45.9 | 51.2 | 48.6 | 40.1 | 31.3 | 19.5 | 4.5 | 25.7 |
| Highest Mean Min. Temperature (F) | 6.9 | 9.4 | 23.1 | 31.4 | 45.2 | 49.7 | 56.3 | 53.0 | 45.8 | 41.1 | 25.5 | 14.8 | 29.4 |
| Year Highest Occurred | 1990 | 1961 | 1973 | 1986 | 1962 | 1975 | 1983 | 1984 | 1978 | 1971 | 1988 | 1965 | 1961 |
| Lowest Mean Min. Temperature (F) | -14.4 | -12.4 | 2.0 | 18.3 | 29.6 | 39.4 | 47.4 | 43.8 | 34.5 | 24.4 | 11.8 | -8.2 | 22.7 |
| Year Lowest Occurred | 1982 | 1979 | 1984 | 1975 | 1967 | 1982 | 1971 | 1967 | 1976 | 1987 | 1976 | 1976 | 1989 |
| Mean Precipitation (in.) | 1.05 | 0.87 | 1.68 | 2.36 | 3.43 | 3.71 | 3.31 | 4.01 | 3.93 | 2.78 | 1.97 | 1.49 | 30.59 |
| Highest Precipitation (in.) | 3.05 | 3.23 | 4.06 | 4.19 | 6.66 | 8.36 | 8.15 | 10.41 | 7.34 | 5.02 | 4.81 | 2.99 | 39.12 |
| Year Highest Occurred | 1967 | 1962 | 1979 | 1981 | 1965 | 1981 | 1982 | 1966 | 1985 | 1979 | 1985 | 1968 | 1985 |
| Lowest Precipitation (in.) | 0.33 | 0.08 | 0.25 | 0.61 | 0.17 | 1.85 | 1.00 | 0.67 | 0.63 | 0.40 | 0.44 | 0.49 | 19.19 |
| Year Lowest Occurred | 1981 | 1987 | 1980 | 1971 | 1986 | 1986 | 1989 | 1970 | 1976 | 1964 | 1981 | 1986 | 1989 |
| Heating Degree Days (F) | 1764. | 1520. | 1296. | 804. | 458. | 191. | 79. | 137. | 384. | 694. | 1098. | 1578. | 10003. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 12. | 20. | 63. | 29. | 0. | 0. | 0. | 0. | 124. |