| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 26.7 | 32.7 | 40.8 | 52.7 | 63.8 | 74.5 | 81.8 | 79.7 | 70.9 | 59.2 | 41.4 | 28.7 | 54.4 |
| Highest Mean Max. Temperature (F) | 41.2 | 38.7 | 48.7 | 62.1 | 69.7 | 81.8 | 85.6 | 83.8 | 77.4 | 67.2 | 49.4 | 41.5 | 57.4 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1987 | 1969 | 1988 | 1989 | 1988 | 1979 | 1988 | 1962 | 1980 | 1963 |
| Lowest Mean Max. Temperature (F) | 18.6 | 26.2 | 34.5 | 44.3 | 58.2 | 68.7 | 77.5 | 74.3 | 60.9 | 48.7 | 34.5 | 22.1 | 51.7 |
| Year Lowest Occurred | 1979 | 1964 | 1965 | 1984 | 1983 | 1969 | 1986 | 1968 | 1961 | 1969 | 1979 | 1978 | 1984 |
| Mean Temperature (F) | 13.2 | 18.0 | 27.3 | 38.3 | 47.5 | 55.2 | 61.8 | 60.0 | 51.8 | 41.6 | 27.6 | 15.8 | 38.2 |
| Highest Mean Temperature (F) | 25.7 | 24.6 | 34.7 | 45.0 | 51.8 | 62.3 | 65.9 | 63.6 | 56.3 | 47.1 | 32.8 | 27.9 | 41.4 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1989 | 1987 | 1988 | 1989 | 1988 | 1990 | 1988 | 1966 | 1980 | 1981 |
| Lowest Mean Temperature (F) | 5.8 | 9.7 | 17.9 | 32.4 | 44.1 | 51.7 | 59.1 | 56.9 | 45.5 | 35.3 | 21.1 | 9.8 | 36.0 |
| Year Lowest Occurred | 1962 | 1964 | 1965 | 1984 | 1975 | 1975 | 1962 | 1974 | 1961 | 1970 | 1968 | 1978 | 1968 |
| Mean Min. Temperature (F) | -0.3 | 3.2 | 13.7 | 23.8 | 31.2 | 35.9 | 41.6 | 40.3 | 32.7 | 24.0 | 13.8 | 2.9 | 21.9 |
| Highest Mean Min. Temperature (F) | 10.2 | 13.6 | 21.2 | 29.4 | 37.1 | 42.8 | 46.2 | 44.6 | 36.5 | 29.9 | 18.3 | 14.3 | 25.6 |
| Year Highest Occurred | 1981 | 1986 | 1990 | 1989 | 1987 | 1988 | 1989 | 1983 | 1982 | 1972 | 1970 | 1980 | 1981 |
| Lowest Mean Min. Temperature (F) | -11.4 | -6.9 | 1.2 | 19.1 | 28.6 | 32.2 | 37.0 | 34.9 | 27.7 | 19.0 | 7.5 | -4.2 | 18.9 |
| Year Lowest Occurred | 1962 | 1964 | 1965 | 1975 | 1972 | 1982 | 1962 | 1974 | 1974 | 1976 | 1968 | 1990 | 1964 |
| Mean Precipitation (in.) | 2.36 | 1.99 | 2.04 | 2.18 | 2.11 | 1.52 | 1.53 | 1.48 | 1.64 | 1.87 | 2.09 | 2.57 | 23.38 |
| Highest Precipitation (in.) | 5.80 | 4.69 | 3.47 | 4.16 | 5.42 | 3.90 | 3.27 | 3.03 | 8.15 | 4.29 | 5.59 | 6.79 | 34.48 |
| Year Highest Occurred | 1980 | 1986 | 1974 | 1985 | 1981 | 1984 | 1986 | 1965 | 1961 | 1981 | 1985 | 1983 | 1983 |
| Lowest Precipitation (in.) | 0.69 | 0.84 | 0.59 | 0.60 | 0.34 | 0.10 | 0.14 | 0.41 | 0.23 | 0.07 | 0.54 | 0.35 | 17.15 |
| Year Lowest Occurred | 1961 | 1987 | 1969 | 1966 | 1969 | 1980 | 1971 | 1962 | 1975 | 1965 | 1976 | 1986 | 1966 |
| Heating Degree Days (F) | 1606. | 1316. | 1169. | 801. | 543. | 297. | 113. | 166. | 396. | 725. | 1122. | 1525. | 9779. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 14. | 11. | 0. | 0. | 0. | 0. | 25. |