| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 30.1 | 36.0 | 44.8 | 55.4 | 66.2 | 76.7 | 86.4 | 84.2 | 73.7 | 61.4 | 44.6 | 32.5 | 57.7 |
| Highest Mean Max. Temperature (F) | 37.0 | 45.5 | 54.8 | 64.6 | 75.0 | 83.7 | 89.9 | 90.7 | 81.1 | 69.6 | 50.9 | 40.2 | 60.5 |
| Year Highest Occurred | 1969 | 1963 | 1986 | 1987 | 1969 | 1988 | 1989 | 1969 | 1979 | 1988 | 1976 | 1981 | 1981 |
| Lowest Mean Max. Temperature (F) | 22.3 | 27.6 | 34.2 | 47.2 | 60.1 | 70.0 | 82.6 | 77.3 | 65.8 | 52.1 | 39.1 | 21.9 | 54.1 |
| Year Lowest Occurred | 1979 | 1989 | 1964 | 1975 | 1975 | 1964 | 1982 | 1968 | 1965 | 1984 | 1985 | 1990 | 1984 |
| Mean Temperature (F) | 18.3 | 22.9 | 32.6 | 42.6 | 51.7 | 60.2 | 68.4 | 66.4 | 56.9 | 45.9 | 33.5 | 22.2 | 43.5 |
| Highest Mean Temperature (F) | 27.3 | 33.6 | 42.8 | 48.3 | 57.1 | 65.3 | 71.2 | 70.5 | 62.1 | 51.6 | 38.6 | 30.2 | 46.9 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1987 | 1969 | 1988 | 1989 | 1969 | 1990 | 1963 | 1965 | 1981 | 1981 |
| Lowest Mean Temperature (F) | 10.1 | 13.2 | 21.0 | 36.0 | 45.9 | 56.0 | 65.9 | 62.0 | 51.4 | 40.0 | 28.5 | 10.0 | 41.2 |
| Year Lowest Occurred | 1989 | 1964 | 1964 | 1975 | 1975 | 1975 | 1987 | 1968 | 1965 | 1970 | 1979 | 1990 | 1984 |
| Mean Min. Temperature (F) | 6.3 | 9.7 | 20.3 | 29.7 | 37.0 | 43.7 | 50.3 | 48.6 | 40.0 | 30.4 | 22.3 | 11.9 | 29.2 |
| Highest Mean Min. Temperature (F) | 18.3 | 22.0 | 30.7 | 34.1 | 40.8 | 46.9 | 53.6 | 55.0 | 45.7 | 36.3 | 27.1 | 20.6 | 33.4 |
| Year Highest Occurred | 1965 | 1986 | 1986 | 1989 | 1987 | 1988 | 1985 | 1983 | 1963 | 1963 | 1965 | 1964 | 1981 |
| Lowest Mean Min. Temperature (F) | -4.2 | -2.1 | 7.8 | 24.7 | 31.6 | 40.0 | 47.5 | 44.4 | 35.3 | 24.6 | 15.4 | -2.0 | 26.9 |
| Year Lowest Occurred | 1989 | 1985 | 1964 | 1975 | 1975 | 1976 | 1962 | 1974 | 1970 | 1970 | 1990 | 1990 | 1976 |
| Mean Precipitation (in.) | 3.21 | 2.92 | 3.23 | 3.09 | 3.07 | 1.65 | 0.93 | 1.19 | 2.09 | 2.64 | 3.26 | 3.50 | 30.78 |
| Highest Precipitation (in.) | 7.25 | 9.02 | 7.98 | 8.27 | 7.54 | 4.36 | 4.36 | 4.58 | 7.93 | 6.96 | 7.66 | 12.91 | 53.45 |
| Year Highest Occurred | 1980 | 1986 | 1982 | 1986 | 1981 | 1964 | 1984 | 1968 | 1982 | 1981 | 1988 | 1983 | 1983 |
| Lowest Precipitation (in.) | 0.00 | 0.56 | 0.25 | 0.17 | 0.09 | 0.07 | 0.00 | 0.00 | 0.00 | 0.00 | 0.04 | 0.06 | 17.09 |
| Year Lowest Occurred | 1961 | 1964 | 1969 | 1987 | 1972 | 1988 | 1971 | 1975 | 1974 | 1978 | 1976 | 1976 | 1966 |
| Heating Degree Days (F) | 1448. | 1179. | 1004. | 672. | 412. | 167. | 8. | 54. | 257. | 592. | 945. | 1327. | 8065. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 23. | 114. | 97. | 14. | 0. | 0. | 0. | 248. |