| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 23.4 | 26.1 | 30.3 | 37.3 | 46.3 | 57.0 | 63.9 | 61.5 | 54.8 | 44.6 | 32.0 | 24.9 | 41.8 |
| Highest Mean Max. Temperature (F) | 34.1 | 31.3 | 39.0 | 45.6 | 50.4 | 64.7 | 70.2 | 72.1 | 64.2 | 50.3 | 39.6 | 36.4 | 47.1 |
| Year Highest Occurred | 1981 | 1980 | 1986 | 1981 | 1974 | 1981 | 1980 | 1981 | 1981 | 1979 | 1990 | 1980 | 1981 |
| Lowest Mean Max. Temperature (F) | 17.4 | 15.8 | 21.3 | 29.9 | 41.5 | 51.1 | 60.2 | 57.0 | 46.9 | 35.1 | 25.2 | 18.0 | 38.1 |
| Year Lowest Occurred | 1963 | 1964 | 1965 | 1970 | 1967 | 1969 | 1973 | 1968 | 1961 | 1969 | 1972 | 1961 | 1964 |
| Mean Temperature (F) | 12.1 | 14.1 | 18.3 | 25.5 | 35.1 | 45.1 | 51.5 | 49.5 | 42.8 | 33.2 | 20.8 | 13.9 | 30.2 |
| Highest Mean Temperature (F) | 20.6 | 18.8 | 25.7 | 32.6 | 39.1 | 50.1 | 55.8 | 54.1 | 47.8 | 38.5 | 25.7 | 24.4 | 33.4 |
| Year Highest Occurred | 1981 | 1980 | 1986 | 1981 | 1969 | 1990 | 1980 | 1981 | 1981 | 1963 | 1990 | 1980 | 1981 |
| Lowest Mean Temperature (F) | 6.1 | 5.1 | 11.4 | 17.7 | 30.9 | 41.1 | 48.8 | 46.5 | 37.1 | 25.4 | 14.4 | 8.5 | 27.7 |
| Year Lowest Occurred | 1979 | 1964 | 1964 | 1973 | 1973 | 1969 | 1962 | 1968 | 1961 | 1970 | 1972 | 1961 | 1964 |
| Mean Min. Temperature (F) | 0.8 | 2.0 | 6.1 | 13.6 | 23.9 | 33.1 | 39.0 | 37.5 | 30.8 | 21.7 | 9.6 | 2.9 | 18.4 |
| Highest Mean Min. Temperature (F) | 7.5 | 6.9 | 12.3 | 19.6 | 28.8 | 36.5 | 41.8 | 41.3 | 35.1 | 28.1 | 13.6 | 12.3 | 20.4 |
| Year Highest Occurred | 1986 | 1962 | 1986 | 1981 | 1963 | 1988 | 1966 | 1983 | 1990 | 1963 | 1966 | 1980 | 1963 |
| Lowest Mean Min. Temperature (F) | -5.8 | -5.6 | -1.0 | 4.7 | 18.2 | 28.3 | 37.0 | 32.8 | 26.7 | 14.9 | 3.5 | -2.5 | 16.8 |
| Year Lowest Occurred | 1979 | 1964 | 1988 | 1973 | 1973 | 1975 | 1961 | 1978 | 1971 | 1970 | 1979 | 1978 | 1975 |
| Mean Precipitation (in.) | 1.87 | 1.70 | 2.14 | 2.25 | 1.88 | 1.45 | 2.35 | 2.31 | 1.52 | 1.36 | 1.79 | 2.02 | 22.64 |
| Highest Precipitation (in.) | 5.19 | 4.27 | 3.64 | 4.84 | 5.28 | 3.85 | 4.85 | 6.94 | 4.83 | 4.05 | 3.82 | 5.30 | 30.90 |
| Year Highest Occurred | 1980 | 1986 | 1983 | 1962 | 1973 | 1969 | 1985 | 1963 | 1961 | 1969 | 1979 | 1973 | 1983 |
| Lowest Precipitation (in.) | 0.35 | 0.66 | 0.86 | 0.56 | 0.48 | 0.00 | 0.41 | 0.49 | 0.20 | 0.35 | 0.53 | 0.34 | 13.53 |
| Year Lowest Occurred | 1984 | 1982 | 1966 | 1987 | 1963 | 1980 | 1979 | 1985 | 1989 | 1965 | 1980 | 1986 | 1989 |
| Heating Degree Days (F) | 1640. | 1425. | 1448. | 1185. | 927. | 597. | 419. | 481. | 666. | 986. | 1326. | 1584. | 12684. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |