| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 33.7 | 33.1 | 34.7 | 37.7 | 41.2 | 44.6 | 48.9 | 51.6 | 50.7 | 45.4 | 39.2 | 35.6 | 41.4 |
| Highest Mean Max. Temperature (F) | 37.1 | 37.4 | 36.9 | 40.2 | 43.1 | 46.8 | 51.7 | 55.6 | 53.9 | 47.9 | 43.0 | 39.3 | 42.8 |
| Year Highest Occurred | 1963 | 1982 | 1987 | 1990 | 1990 | 1974 | 1990 | 1986 | 1986 | 1986 | 1990 | 1990 | 1990 |
| Lowest Mean Max. Temperature (F) | 29.4 | 30.0 | 31.0 | 35.6 | 39.0 | 41.5 | 46.2 | 48.8 | 47.3 | 43.1 | 36.5 | 33.0 | 40.0 |
| Year Lowest Occurred | 1981 | 1977 | 1977 | 1976 | 1973 | 1980 | 1964 | 1971 | 1964 | 1964 | 1972 | 1974 | 1964 |
| Mean Temperature (F) | 31.0 | 30.5 | 31.9 | 35.0 | 38.6 | 42.2 | 46.6 | 49.2 | 47.8 | 42.2 | 36.0 | 32.8 | 38.7 |
| Highest Mean Temperature (F) | 34.5 | 34.8 | 34.3 | 37.5 | 40.5 | 44.3 | 49.4 | 52.8 | 51.0 | 45.1 | 40.4 | 37.2 | 40.4 |
| Year Highest Occurred | 1963 | 1982 | 1987 | 1990 | 1967 | 1974 | 1981 | 1986 | 1986 | 1985 | 1990 | 1990 | 1986 |
| Lowest Mean Temperature (F) | 26.0 | 27.3 | 27.6 | 33.0 | 36.5 | 39.4 | 44.2 | 46.6 | 44.7 | 39.6 | 31.3 | 29.0 | 37.4 |
| Year Lowest Occurred | 1981 | 1977 | 1977 | 1988 | 1973 | 1980 | 1964 | 1971 | 1964 | 1980 | 1977 | 1974 | 1971 |
| Mean Min. Temperature (F) | 28.2 | 27.8 | 29.0 | 32.2 | 35.9 | 39.8 | 44.2 | 46.8 | 44.9 | 39.0 | 32.8 | 29.9 | 35.9 |
| Highest Mean Min. Temperature (F) | 32.5 | 32.1 | 31.9 | 34.7 | 38.4 | 41.7 | 47.1 | 50.2 | 48.4 | 42.6 | 37.8 | 35.0 | 38.0 |
| Year Highest Occurred | 1974 | 1982 | 1989 | 1990 | 1967 | 1977 | 1981 | 1981 | 1977 | 1985 | 1990 | 1990 | 1986 |
| Lowest Mean Min. Temperature (F) | 22.5 | 24.5 | 24.2 | 29.8 | 33.1 | 37.2 | 41.3 | 44.3 | 41.8 | 35.5 | 23.9 | 25.0 | 34.1 |
| Year Lowest Occurred | 1981 | 1977 | 1977 | 1988 | 1971 | 1980 | 1966 | 1963 | 1967 | 1980 | 1977 | 1974 | 1966 |
| Mean Precipitation (in.) | 2.49 | 1.96 | 1.90 | 1.82 | 1.65 | 1.87 | 2.69 | 4.11 | 2.93 | 3.83 | 4.04 | 2.95 | 32.24 |
| Highest Precipitation (in.) | 5.63 | 3.44 | 3.56 | 3.97 | 3.37 | 7.51 | 8.71 | 9.36 | 5.06 | 8.59 | 7.99 | 6.00 | 47.28 |
| Year Highest Occurred | 1987 | 1976 | 1967 | 1969 | 1978 | 1978 | 1967 | 1990 | 1964 | 1962 | 1975 | 1965 | 1978 |
| Lowest Precipitation (in.) | 1.22 | 0.73 | 0.42 | 0.34 | 0.05 | 0.14 | 0.72 | 0.74 | 1.69 | 1.90 | 0.99 | 1.01 | 17.27 |
| Year Lowest Occurred | 1988 | 1968 | 1961 | 1962 | 1973 | 1981 | 1968 | 1986 | 1972 | 1966 | 1968 | 1988 | 1968 |
| Heating Degree Days (F) | 1054. | 966. | 1026. | 900. | 818. | 684. | 570. | 490. | 516. | 707. | 870. | 998. | 9599. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |