| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 38.8 | 43.3 | 54.5 | 65.3 | 75.0 | 83.1 | 86.5 | 85.1 | 79.3 | 68.0 | 55.5 | 43.8 | 64.9 |
| Highest Mean Max. Temperature (F) | 48.9 | 54.5 | 61.5 | 74.8 | 83.6 | 87.8 | 91.0 | 92.5 | 85.1 | 80.2 | 60.6 | 53.3 | 67.8 |
| Year Highest Occurred | 1990 | 1976 | 1976 | 1977 | 1962 | 1984 | 1966 | 1983 | 1970 | 1963 | 1987 | 1984 | 1987 |
| Lowest Mean Max. Temperature (F) | 25.0 | 30.3 | 46.5 | 58.6 | 68.5 | 77.9 | 81.5 | 81.6 | 73.1 | 61.2 | 48.0 | 31.4 | 62.8 |
| Year Lowest Occurred | 1977 | 1978 | 1965 | 1961 | 1989 | 1974 | 1979 | 1967 | 1974 | 1976 | 1967 | 1989 | 1978 |
| Mean Temperature (F) | 28.0 | 31.6 | 42.0 | 51.8 | 61.6 | 70.2 | 74.3 | 72.7 | 66.2 | 53.8 | 43.6 | 33.4 | 52.4 |
| Highest Mean Temperature (F) | 39.0 | 40.7 | 48.8 | 58.8 | 69.5 | 73.6 | 78.0 | 79.0 | 70.9 | 60.4 | 51.2 | 42.6 | 55.0 |
| Year Highest Occurred | 1990 | 1976 | 1973 | 1977 | 1962 | 1984 | 1986 | 1983 | 1970 | 1984 | 1985 | 1982 | 1990 |
| Lowest Mean Temperature (F) | 13.8 | 18.9 | 34.0 | 46.4 | 57.1 | 65.4 | 70.9 | 68.3 | 61.1 | 47.6 | 37.2 | 20.0 | 50.3 |
| Year Lowest Occurred | 1977 | 1978 | 1969 | 1975 | 1989 | 1972 | 1967 | 1967 | 1974 | 1988 | 1976 | 1989 | 1966 |
| Mean Min. Temperature (F) | 17.2 | 19.8 | 29.4 | 38.2 | 48.3 | 57.2 | 62.1 | 60.1 | 53.0 | 39.5 | 31.7 | 22.9 | 40.0 |
| Highest Mean Min. Temperature (F) | 29.0 | 29.2 | 36.2 | 42.7 | 55.3 | 60.5 | 66.4 | 66.6 | 58.6 | 49.3 | 42.9 | 32.6 | 43.6 |
| Year Highest Occurred | 1990 | 1986 | 1973 | 1977 | 1962 | 1981 | 1986 | 1980 | 1977 | 1984 | 1985 | 1982 | 1990 |
| Lowest Mean Min. Temperature (F) | 2.6 | 7.5 | 19.0 | 31.2 | 43.1 | 52.3 | 58.6 | 54.9 | 46.6 | 30.5 | 24.2 | 8.6 | 37.2 |
| Year Lowest Occurred | 1977 | 1978 | 1969 | 1971 | 1971 | 1966 | 1971 | 1967 | 1967 | 1964 | 1976 | 1989 | 1963 |
| Mean Precipitation (in.) | 2.65 | 2.73 | 4.38 | 3.81 | 4.35 | 3.71 | 4.72 | 3.87 | 3.28 | 2.92 | 3.43 | 3.32 | 43.17 |
| Highest Precipitation (in.) | 5.69 | 7.53 | 12.30 | 10.25 | 8.90 | 8.08 | 9.15 | 7.99 | 10.14 | 12.03 | 7.70 | 8.24 | 60.76 |
| Year Highest Occurred | 1966 | 1989 | 1964 | 1970 | 1983 | 1973 | 1961 | 1977 | 1965 | 1983 | 1972 | 1990 | 1979 |
| Lowest Precipitation (in.) | 0.52 | 0.31 | 1.20 | 0.70 | 0.84 | 0.13 | 1.89 | 0.64 | 0.29 | 0.33 | 0.42 | 0.52 | 26.11 |
| Year Lowest Occurred | 1981 | 1978 | 1983 | 1985 | 1964 | 1988 | 1989 | 1987 | 1963 | 1987 | 1976 | 1976 | 1987 |
| Heating Degree Days (F) | 1147. | 935. | 713. | 400. | 177. | 10. | 0. | 11. | 68. | 360. | 642. | 980. | 5443. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 72. | 166. | 288. | 249. | 104. | 13. | 0. | 0. | 892. |