| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 34.5 | 35.2 | 36.5 | 41.7 | 49.2 | 58.1 | 68.0 | 68.5 | 61.7 | 52.0 | 38.5 | 34.4 | 48.2 |
| Highest Mean Max. Temperature (F) | 41.5 | 42.9 | 43.2 | 50.7 | 55.6 | 64.6 | 73.2 | 76.7 | 71.8 | 64.3 | 49.7 | 44.9 | 50.8 |
| Year Highest Occurred | 1981 | 1988 | 1978 | 1987 | 1966 | 1977 | 1985 | 1981 | 1974 | 1987 | 1976 | 1989 | 1988 |
| Lowest Mean Max. Temperature (F) | 26.7 | 27.2 | 31.4 | 33.3 | 40.7 | 50.6 | 56.0 | 58.8 | 52.3 | 42.7 | 30.9 | 26.6 | 44.9 |
| Year Lowest Occurred | 1969 | 1969 | 1971 | 1967 | 1977 | 1980 | 1983 | 1976 | 1986 | 1969 | 1973 | 1968 | 1983 |
| Mean Temperature (F) | 26.0 | 26.6 | 27.3 | 31.4 | 38.1 | 46.0 | 53.9 | 54.4 | 48.6 | 41.1 | 30.5 | 26.4 | 37.5 |
| Highest Mean Temperature (F) | 32.4 | 33.7 | 33.1 | 38.7 | 43.1 | 51.3 | 58.9 | 60.7 | 55.8 | 50.2 | 39.6 | 33.7 | 39.3 |
| Year Highest Occurred | 1981 | 1963 | 1978 | 1990 | 1973 | 1977 | 1985 | 1967 | 1974 | 1988 | 1976 | 1989 | 1987 |
| Lowest Mean Temperature (F) | 20.9 | 18.9 | 23.1 | 24.0 | 31.7 | 40.2 | 44.9 | 47.8 | 42.0 | 34.2 | 23.5 | 20.7 | 35.2 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1967 | 1977 | 1980 | 1983 | 1976 | 1986 | 1969 | 1985 | 1971 | 1982 |
| Mean Min. Temperature (F) | 17.5 | 17.9 | 18.1 | 21.1 | 27.0 | 33.8 | 39.8 | 40.2 | 35.5 | 30.1 | 22.5 | 18.3 | 26.8 |
| Highest Mean Min. Temperature (F) | 23.3 | 26.0 | 23.0 | 27.4 | 31.7 | 38.0 | 44.6 | 45.7 | 40.0 | 36.5 | 29.5 | 23.8 | 28.2 |
| Year Highest Occurred | 1981 | 1963 | 1978 | 1990 | 1987 | 1977 | 1985 | 1977 | 1975 | 1988 | 1976 | 1963 | 1963 |
| Lowest Mean Min. Temperature (F) | 10.6 | 9.0 | 14.3 | 14.3 | 22.7 | 29.7 | 33.8 | 35.5 | 31.0 | 25.6 | 15.1 | 11.5 | 24.8 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1977 | 1980 | 1983 | 1969 | 1972 | 1984 | 1985 | 1978 | 1982 |
| Mean Precipitation (in.) | 9.66 | 7.78 | 7.91 | 4.60 | 3.01 | 1.95 | 0.67 | 1.29 | 2.38 | 4.75 | 10.56 | 10.84 | 65.40 |
| Highest Precipitation (in.) | 18.76 | 17.47 | 15.09 | 9.10 | 7.04 | 5.39 | 4.11 | 5.34 | 8.75 | 10.32 | 24.16 | 38.47 | 94.57 |
| Year Highest Occurred | 1970 | 1986 | 1989 | 1963 | 1977 | 1964 | 1987 | 1968 | 1986 | 1979 | 1973 | 1964 | 1964 |
| Lowest Precipitation (in.) | 0.63 | 2.00 | 1.24 | 1.29 | 0.17 | 0.27 | 0.00 | 0.00 | 0.00 | 0.02 | 1.86 | 0.90 | 42.08 |
| Year Lowest Occurred | 1985 | 1988 | 1965 | 1977 | 1982 | 1989 | 1988 | 1988 | 1987 | 1987 | 1976 | 1976 | 1976 |
| Heating Degree Days (F) | 1209. | 1075. | 1169. | 1008. | 834. | 570. | 350. | 338. | 497. | 741. | 1035. | 1197. | 10023. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 6. | 9. | 5. | 0. | 0. | 0. | 20. |