| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 26.9 | 31.2 | 37.0 | 46.9 | 58.4 | 69.1 | 77.0 | 74.6 | 65.6 | 54.6 | 39.2 | 29.2 | 50.8 |
| Highest Mean Max. Temperature (F) | 39.7 | 37.9 | 46.4 | 55.5 | 65.6 | 75.0 | 81.1 | 77.1 | 72.2 | 62.2 | 46.2 | 40.9 | 53.3 |
| Year Highest Occurred | 1981 | 1963 | 1972 | 1987 | 1969 | 1977 | 1989 | 1969 | 1979 | 1988 | 1962 | 1980 | 1981 |
| Lowest Mean Max. Temperature (F) | 17.7 | 25.6 | 29.6 | 38.9 | 52.2 | 63.2 | 73.1 | 68.1 | 58.2 | 46.1 | 32.0 | 22.8 | 48.0 |
| Year Lowest Occurred | 1979 | 1985 | 1964 | 1975 | 1983 | 1967 | 1965 | 1968 | 1965 | 1969 | 1982 | 1972 | 1982 |
| Mean Temperature (F) | 12.3 | 15.7 | 23.5 | 33.6 | 44.3 | 53.3 | 60.6 | 58.4 | 49.8 | 39.9 | 27.2 | 15.8 | 36.2 |
| Highest Mean Temperature (F) | 23.8 | 25.5 | 32.7 | 41.0 | 49.2 | 58.2 | 63.7 | 61.1 | 55.3 | 46.3 | 31.4 | 26.9 | 39.1 |
| Year Highest Occurred | 1981 | 1963 | 1972 | 1989 | 1969 | 1988 | 1989 | 1986 | 1990 | 1988 | 1981 | 1980 | 1981 |
| Lowest Mean Temperature (F) | 5.2 | 7.5 | 14.9 | 26.8 | 39.2 | 49.3 | 58.1 | 53.7 | 44.0 | 33.1 | 19.4 | 9.5 | 33.7 |
| Year Lowest Occurred | 1979 | 1985 | 1962 | 1975 | 1975 | 1975 | 1965 | 1968 | 1965 | 1970 | 1982 | 1990 | 1982 |
| Mean Min. Temperature (F) | -2.4 | 0.2 | 9.9 | 20.4 | 30.2 | 37.4 | 44.2 | 42.1 | 33.9 | 25.1 | 15.1 | 2.4 | 21.5 |
| Highest Mean Min. Temperature (F) | 7.9 | 13.1 | 18.9 | 28.3 | 33.9 | 42.1 | 46.4 | 46.1 | 40.8 | 30.4 | 18.7 | 12.9 | 24.8 |
| Year Highest Occurred | 1981 | 1963 | 1972 | 1990 | 1963 | 1988 | 1988 | 1983 | 1990 | 1988 | 1986 | 1980 | 1981 |
| Lowest Mean Min. Temperature (F) | -11.4 | -10.7 | -0.6 | 13.2 | 26.0 | 34.7 | 41.2 | 38.3 | 28.9 | 19.3 | 6.7 | -5.4 | 19.4 |
| Year Lowest Occurred | 1984 | 1985 | 1962 | 1982 | 1975 | 1962 | 1962 | 1975 | 1971 | 1970 | 1982 | 1990 | 1984 |
| Mean Precipitation (in.) | 1.33 | 1.25 | 1.22 | 0.93 | 0.99 | 0.92 | 1.16 | 1.46 | 1.27 | 1.23 | 1.11 | 1.20 | 14.07 |
| Highest Precipitation (in.) | 5.28 | 5.85 | 3.48 | 2.62 | 2.53 | 2.85 | 2.69 | 3.76 | 3.87 | 3.68 | 3.61 | 4.68 | 21.70 |
| Year Highest Occurred | 1969 | 1962 | 1964 | 1963 | 1967 | 1965 | 1985 | 1981 | 1982 | 1972 | 1985 | 1964 | 1969 |
| Lowest Precipitation (in.) | 0.02 | 0.11 | 0.21 | 0.03 | 0.01 | 0.01 | 0.03 | 0.05 | 0.06 | 0.13 | 0.04 | 0.00 | 6.77 |
| Year Lowest Occurred | 1961 | 1981 | 1969 | 1966 | 1974 | 1980 | 1978 | 1985 | 1979 | 1973 | 1976 | 1976 | 1974 |
| Heating Degree Days (F) | 1634. | 1380. | 1287. | 942. | 642. | 351. | 142. | 209. | 456. | 778. | 1134. | 1525. | 10480. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 6. | 0. | 0. | 0. | 0. | 0. | 6. |