| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 24.1 | 29.9 | 42.3 | 58.9 | 71.8 | 81.2 | 84.6 | 82.5 | 74.2 | 62.3 | 44.1 | 28.2 | 57.0 |
| Highest Mean Max. Temperature (F) | 38.2 | 41.8 | 54.3 | 67.6 | 80.1 | 88.3 | 89.3 | 88.9 | 80.6 | 74.3 | 51.3 | 38.4 | 60.9 |
| Year Highest Occurred | 1990 | 1976 | 1968 | 1977 | 1977 | 1988 | 1964 | 1983 | 1978 | 1963 | 1990 | 1965 | 1987 |
| Lowest Mean Max. Temperature (F) | 11.6 | 19.7 | 29.3 | 49.7 | 65.4 | 74.0 | 80.7 | 78.4 | 68.0 | 57.0 | 35.1 | 14.7 | 54.2 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1975 | 1983 | 1969 | 1971 | 1986 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 14.8 | 20.5 | 33.1 | 47.8 | 59.9 | 69.2 | 73.1 | 70.7 | 62.3 | 50.9 | 35.4 | 20.1 | 46.5 |
| Highest Mean Temperature (F) | 27.5 | 31.7 | 41.8 | 55.1 | 68.0 | 74.0 | 76.5 | 76.6 | 67.5 | 61.0 | 40.3 | 30.9 | 50.0 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1971 | 1974 | 1983 | 1978 | 1963 | 1990 | 1965 | 1987 |
| Lowest Mean Temperature (F) | 3.2 | 10.1 | 21.3 | 41.5 | 54.8 | 63.1 | 69.3 | 67.1 | 58.6 | 43.7 | 27.5 | 7.2 | 44.2 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1975 | 1966 | 1969 | 1971 | 1967 | 1965 | 1988 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 5.4 | 11.1 | 24.0 | 36.6 | 48.0 | 57.2 | 61.5 | 58.9 | 50.4 | 39.5 | 26.6 | 11.9 | 35.9 |
| Highest Mean Min. Temperature (F) | 16.8 | 22.3 | 33.8 | 42.6 | 55.9 | 62.0 | 64.5 | 64.3 | 54.5 | 47.7 | 30.8 | 23.4 | 39.1 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1971 | 1974 | 1983 | 1990 | 1963 | 1983 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -7.3 | 0.5 | 13.2 | 32.7 | 41.7 | 52.2 | 57.4 | 54.8 | 45.2 | 30.0 | 18.3 | -2.3 | 33.2 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1982 | 1966 | 1969 | 1967 | 1967 | 1974 | 1988 | 1976 | 1985 | 1989 |
| Mean Precipitation (in.) | 0.81 | 0.89 | 2.17 | 3.32 | 4.05 | 4.62 | 4.13 | 3.85 | 3.81 | 2.62 | 1.74 | 1.17 | 33.18 |
| Highest Precipitation (in.) | 1.99 | 2.84 | 4.93 | 6.65 | 8.62 | 11.42 | 8.60 | 13.60 | 12.51 | 5.79 | 4.50 | 3.19 | 48.22 |
| Year Highest Occurred | 1980 | 1971 | 1961 | 1981 | 1983 | 1969 | 1990 | 1979 | 1965 | 1970 | 1983 | 1982 | 1979 |
| Lowest Precipitation (in.) | 0.08 | 0.00 | 0.45 | 1.07 | 1.56 | 1.30 | 0.80 | 0.88 | 0.60 | 0.25 | 0.00 | 0.22 | 16.57 |
| Year Lowest Occurred | 1976 | 1987 | 1981 | 1971 | 1985 | 1961 | 1985 | 1971 | 1975 | 1964 | 1976 | 1989 | 1989 |
| Heating Degree Days (F) | 1556. | 1246. | 989. | 516. | 210. | 24. | 0. | 12. | 111. | 444. | 888. | 1392. | 7388. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 52. | 150. | 255. | 189. | 30. | 7. | 0. | 0. | 683. |