| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 42.5 | 46.6 | 50.1 | 54.7 | 61.3 | 67.4 | 72.3 | 73.5 | 69.3 | 59.0 | 47.7 | 42.9 | 57.3 |
| Highest Mean Max. Temperature (F) | 48.1 | 53.7 | 55.2 | 59.7 | 68.3 | 74.4 | 80.0 | 82.5 | 76.9 | 66.8 | 53.2 | 48.9 | 59.7 |
| Year Highest Occurred | 1961 | 1963 | 1965 | 1989 | 1972 | 1967 | 1985 | 1967 | 1974 | 1987 | 1976 | 1976 | 1987 |
| Lowest Mean Max. Temperature (F) | 33.4 | 40.1 | 44.3 | 49.3 | 54.5 | 59.8 | 66.8 | 66.6 | 63.3 | 54.1 | 39.2 | 37.6 | 55.0 |
| Year Lowest Occurred | 1969 | 1989 | 1989 | 1972 | 1974 | 1971 | 1963 | 1975 | 1978 | 1968 | 1985 | 1964 | 1964 |
| Mean Temperature (F) | 37.7 | 40.4 | 42.4 | 45.9 | 51.4 | 56.6 | 60.5 | 61.3 | 58.0 | 50.3 | 42.1 | 38.3 | 48.7 |
| Highest Mean Temperature (F) | 42.6 | 45.9 | 46.8 | 49.4 | 56.2 | 61.4 | 64.7 | 67.1 | 61.8 | 53.9 | 46.1 | 43.9 | 50.6 |
| Year Highest Occurred | 1983 | 1963 | 1986 | 1989 | 1983 | 1969 | 1985 | 1986 | 1989 | 1987 | 1976 | 1976 | 1986 |
| Lowest Mean Temperature (F) | 28.4 | 32.6 | 37.7 | 41.6 | 46.9 | 52.0 | 57.7 | 57.2 | 54.0 | 47.1 | 34.1 | 33.4 | 46.8 |
| Year Lowest Occurred | 1969 | 1989 | 1971 | 1972 | 1974 | 1971 | 1963 | 1964 | 1970 | 1968 | 1985 | 1964 | 1971 |
| Mean Min. Temperature (F) | 32.8 | 34.2 | 34.7 | 37.1 | 41.5 | 45.8 | 48.6 | 49.1 | 46.5 | 41.6 | 36.6 | 33.6 | 40.2 |
| Highest Mean Min. Temperature (F) | 37.9 | 38.1 | 39.4 | 40.0 | 45.8 | 50.6 | 51.3 | 53.2 | 49.1 | 44.9 | 40.3 | 39.2 | 42.5 |
| Year Highest Occurred | 1983 | 1963 | 1986 | 1990 | 1983 | 1969 | 1961 | 1986 | 1976 | 1988 | 1987 | 1966 | 1986 |
| Lowest Mean Min. Temperature (F) | 23.4 | 25.1 | 30.5 | 33.6 | 38.5 | 42.0 | 45.5 | 45.5 | 42.9 | 38.4 | 28.9 | 27.7 | 38.5 |
| Year Lowest Occurred | 1969 | 1989 | 1971 | 1970 | 1970 | 1962 | 1970 | 1980 | 1970 | 1983 | 1985 | 1985 | 1971 |
| Mean Precipitation (in.) | 13.41 | 11.75 | 9.95 | 6.49 | 4.50 | 2.62 | 2.08 | 2.28 | 4.35 | 9.46 | 14.73 | 14.65 | 96.27 |
| Highest Precipitation (in.) | 24.31 | 21.12 | 17.95 | 13.34 | 11.08 | 8.66 | 7.05 | 8.55 | 12.91 | 22.78 | 33.44 | 30.17 | 125.43 |
| Year Highest Occurred | 1961 | 1961 | 1974 | 1970 | 1986 | 1981 | 1983 | 1975 | 1969 | 1984 | 1990 | 1979 | 1990 |
| Lowest Precipitation (in.) | 0.86 | 3.75 | 2.02 | 3.21 | 1.48 | 0.29 | 0.21 | 0.03 | 0.19 | 1.00 | 4.94 | 4.00 | 56.70 |
| Year Lowest Occurred | 1985 | 1962 | 1965 | 1983 | 1972 | 1967 | 1985 | 1986 | 1975 | 1974 | 1979 | 1985 | 1985 |
| Heating Degree Days (F) | 846. | 689. | 701. | 573. | 422. | 260. | 153. | 153. | 220. | 456. | 687. | 828. | 5988. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 8. | 14. | 38. | 10. | 0. | 0. | 0. | 70. |