| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 24.1 | 30.6 | 42.6 | 58.6 | 71.3 | 80.3 | 85.0 | 81.8 | 73.0 | 61.4 | 44.7 | 28.7 | 56.8 |
| Highest Mean Max. Temperature (F) | 37.4 | 41.8 | 50.9 | 69.8 | 81.6 | 88.1 | 89.7 | 87.6 | 79.7 | 73.8 | 52.3 | 36.7 | 61.9 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1988 | 1983 | 1978 | 1963 | 1975 | 1965 | 1987 |
| Lowest Mean Max. Temperature (F) | 13.5 | 21.8 | 33.1 | 50.0 | 64.7 | 70.8 | 78.6 | 77.4 | 66.5 | 55.7 | 36.9 | 14.7 | 53.6 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1975 | 1973 | 1969 | 1962 | 1986 | 1965 | 1980 | 1985 | 1985 | 1972 |
| Mean Temperature (F) | 14.1 | 19.5 | 32.0 | 46.6 | 58.5 | 68.0 | 73.2 | 69.7 | 60.8 | 49.7 | 35.3 | 19.8 | 45.6 |
| Highest Mean Temperature (F) | 29.5 | 30.7 | 40.2 | 54.2 | 68.4 | 75.6 | 78.5 | 76.3 | 67.0 | 60.1 | 42.0 | 31.2 | 50.6 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1988 | 1988 | 1988 | 1990 | 1963 | 1987 | 1987 | 1987 |
| Lowest Mean Temperature (F) | 1.4 | 8.2 | 22.2 | 37.7 | 52.9 | 60.8 | 68.1 | 65.6 | 54.8 | 43.6 | 26.8 | 4.7 | 42.2 |
| Year Lowest Occurred | 1977 | 1979 | 1975 | 1975 | 1973 | 1969 | 1972 | 1986 | 1975 | 1976 | 1976 | 1985 | 1972 |
| Mean Min. Temperature (F) | 4.0 | 8.4 | 21.3 | 34.7 | 45.6 | 55.7 | 61.3 | 57.7 | 48.5 | 37.9 | 25.8 | 11.0 | 34.3 |
| Highest Mean Min. Temperature (F) | 21.6 | 21.2 | 29.6 | 42.9 | 55.2 | 63.1 | 67.5 | 66.0 | 57.3 | 46.4 | 35.8 | 25.9 | 40.6 |
| Year Highest Occurred | 1990 | 1984 | 1990 | 1985 | 1977 | 1988 | 1983 | 1988 | 1990 | 1963 | 1987 | 1987 | 1990 |
| Lowest Mean Min. Temperature (F) | -11.1 | -5.4 | 8.9 | 25.3 | 38.9 | 49.5 | 56.2 | 51.4 | 40.2 | 29.6 | 14.1 | -5.3 | 29.7 |
| Year Lowest Occurred | 1977 | 1979 | 1975 | 1975 | 1979 | 1974 | 1971 | 1974 | 1974 | 1976 | 1976 | 1985 | 1978 |
| Mean Precipitation (in.) | 1.16 | 0.90 | 1.81 | 2.92 | 3.75 | 4.15 | 4.12 | 4.21 | 4.00 | 2.39 | 1.82 | 1.34 | 32.57 |
| Highest Precipitation (in.) | 3.92 | 3.50 | 3.60 | 7.39 | 6.98 | 9.51 | 10.01 | 10.46 | 11.04 | 4.90 | 4.49 | 3.44 | 46.42 |
| Year Highest Occurred | 1969 | 1971 | 1976 | 1968 | 1973 | 1968 | 1978 | 1980 | 1986 | 1979 | 1982 | 1968 | 1968 |
| Lowest Precipitation (in.) | 0.05 | 0.00 | 0.20 | 0.90 | 1.22 | 0.97 | 0.71 | 0.88 | 0.24 | 0.35 | 0.04 | 0.00 | 20.53 |
| Year Lowest Occurred | 1962 | 1990 | 1989 | 1966 | 1985 | 1982 | 1975 | 1976 | 1979 | 1964 | 1976 | 1990 | 1976 |
| Heating Degree Days (F) | 1578. | 1274. | 1023. | 558. | 250. | 51. | 12. | 21. | 155. | 480. | 891. | 1401. | 7694. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 6. | 48. | 141. | 266. | 167. | 29. | 5. | 0. | 0. | 662. |