| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 20.4 | 26.6 | 38.5 | 53.8 | 68.3 | 76.1 | 81.9 | 78.6 | 68.8 | 57.7 | 39.9 | 25.5 | 53.0 |
| Highest Mean Max. Temperature (F) | 36.0 | 36.4 | 48.7 | 67.1 | 77.9 | 88.2 | 90.7 | 87.4 | 73.4 | 68.9 | 48.0 | 33.1 | 58.7 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1988 | 1983 | 1990 | 1963 | 1990 | 1982 | 1987 |
| Lowest Mean Max. Temperature (F) | 8.9 | 16.6 | 28.5 | 44.0 | 58.9 | 68.4 | 75.5 | 73.9 | 61.2 | 49.7 | 32.1 | 14.9 | 49.3 |
| Year Lowest Occurred | 1977 | 1979 | 1984 | 1979 | 1979 | 1969 | 1971 | 1985 | 1965 | 1980 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 9.1 | 13.9 | 27.4 | 42.0 | 54.4 | 62.7 | 69.4 | 66.3 | 56.4 | 45.6 | 30.8 | 15.7 | 41.1 |
| Highest Mean Temperature (F) | 27.5 | 27.3 | 38.2 | 49.6 | 64.5 | 75.0 | 78.4 | 77.4 | 62.7 | 52.8 | 37.8 | 24.8 | 47.1 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1983 | 1983 | 1990 | 1963 | 1990 | 1987 | 1987 |
| Lowest Mean Temperature (F) | -5.7 | 1.3 | 15.2 | 34.6 | 47.3 | 52.8 | 63.6 | 60.8 | 50.7 | 38.7 | 21.3 | 1.0 | 37.5 |
| Year Lowest Occurred | 1982 | 1979 | 1984 | 1983 | 1983 | 1982 | 1962 | 1977 | 1965 | 1980 | 1985 | 1989 | 1979 |
| Mean Min. Temperature (F) | -2.3 | 1.2 | 16.2 | 30.2 | 40.3 | 49.2 | 56.7 | 53.9 | 43.9 | 33.5 | 21.7 | 5.9 | 29.2 |
| Highest Mean Min. Temperature (F) | 19.0 | 19.3 | 30.0 | 38.0 | 51.0 | 61.7 | 68.6 | 67.3 | 51.9 | 43.4 | 29.9 | 17.9 | 35.4 |
| Year Highest Occurred | 1990 | 1983 | 1973 | 1986 | 1977 | 1988 | 1983 | 1983 | 1990 | 1971 | 1988 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -20.4 | -14.1 | 0.5 | 24.6 | 31.7 | 36.4 | 47.4 | 46.2 | 35.2 | 26.6 | 10.4 | -15.2 | 25.1 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1983 | 1983 | 1982 | 1962 | 1964 | 1976 | 1976 | 1985 | 1989 | 1976 |
| Mean Precipitation (in.) | 1.03 | 0.85 | 1.72 | 2.48 | 3.25 | 4.20 | 4.22 | 4.62 | 4.65 | 3.25 | 1.65 | 1.24 | 33.16 |
| Highest Precipitation (in.) | 3.82 | 2.05 | 4.08 | 5.02 | 6.49 | 9.60 | 7.89 | 8.50 | 11.51 | 7.75 | 4.32 | 2.75 | 48.19 |
| Year Highest Occurred | 1967 | 1984 | 1985 | 1977 | 1965 | 1967 | 1986 | 1962 | 1985 | 1982 | 1983 | 1965 | 1968 |
| Lowest Precipitation (in.) | 0.00 | 0.11 | 0.09 | 0.28 | 0.65 | 1.58 | 1.51 | 0.85 | 1.18 | 1.00 | 0.25 | 0.00 | 16.68 |
| Year Lowest Occurred | 1981 | 1977 | 1978 | 1988 | 1976 | 1961 | 1981 | 1976 | 1976 | 1976 | 1981 | 1989 | 1976 |
| Heating Degree Days (F) | 1733. | 1431. | 1166. | 690. | 362. | 168. | 61. | 100. | 265. | 601. | 1026. | 1528. | 9131. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 34. | 99. | 198. | 140. | 7. | 0. | 0. | 0. | 478. |