| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 22.1 | 28.4 | 34.4 | 42.4 | 53.0 | 63.7 | 73.0 | 70.9 | 60.5 | 48.9 | 31.7 | 22.2 | 45.9 |
| Highest Mean Max. Temperature (F) | 29.6 | 34.3 | 43.5 | 54.5 | 60.2 | 75.7 | 80.1 | 76.8 | 71.5 | 58.3 | 36.4 | 31.2 | 50.0 |
| Year Highest Occurred | 1983 | 1977 | 1986 | 1987 | 1966 | 1988 | 1988 | 1971 | 1990 | 1988 | 1965 | 1980 | 1988 |
| Lowest Mean Max. Temperature (F) | 12.2 | 16.6 | 25.6 | 33.7 | 48.0 | 57.5 | 66.9 | 64.0 | 47.9 | 40.2 | 22.7 | 12.1 | 43.3 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1970 | 1965 | 1975 | 1987 | 1968 | 1965 | 1969 | 1979 | 1978 | 1965 |
| Mean Temperature (F) | 11.5 | 15.9 | 21.0 | 29.0 | 39.2 | 47.9 | 55.1 | 53.3 | 44.2 | 34.7 | 21.3 | 12.0 | 32.1 |
| Highest Mean Temperature (F) | 20.3 | 21.6 | 31.4 | 37.1 | 46.0 | 56.8 | 59.9 | 58.2 | 52.4 | 42.1 | 27.5 | 20.6 | 35.0 |
| Year Highest Occurred | 1983 | 1963 | 1986 | 1987 | 1987 | 1988 | 1989 | 1983 | 1990 | 1988 | 1965 | 1980 | 1988 |
| Lowest Mean Temperature (F) | 0.4 | 3.4 | 9.3 | 20.5 | 34.7 | 43.0 | 51.5 | 48.8 | 35.6 | 28.8 | 11.0 | 0.9 | 29.5 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1970 | 1975 | 1975 | 1987 | 1975 | 1965 | 1969 | 1979 | 1978 | 1975 |
| Mean Min. Temperature (F) | 1.0 | 3.3 | 7.5 | 15.6 | 25.3 | 32.1 | 37.1 | 35.7 | 27.9 | 20.5 | 10.9 | 1.7 | 18.2 |
| Highest Mean Min. Temperature (F) | 10.9 | 11.8 | 19.2 | 23.1 | 32.0 | 37.9 | 40.6 | 42.9 | 33.3 | 26.2 | 18.6 | 9.9 | 21.7 |
| Year Highest Occurred | 1983 | 1961 | 1986 | 1990 | 1987 | 1988 | 1989 | 1983 | 1990 | 1983 | 1965 | 1980 | 1983 |
| Lowest Mean Min. Temperature (F) | -11.5 | -9.8 | -7.1 | 6.6 | 20.3 | 28.5 | 34.4 | 30.8 | 22.7 | 15.9 | -0.7 | -10.4 | 15.1 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1982 | 1975 | 1975 | 1969 | 1964 | 1975 | 1970 | 1979 | 1978 | 1964 |
| Mean Precipitation (in.) | 2.44 | 1.82 | 1.86 | 1.82 | 2.62 | 2.77 | 2.09 | 2.06 | 2.36 | 1.50 | 2.01 | 2.19 | 25.54 |
| Highest Precipitation (in.) | 5.26 | 4.43 | 4.55 | 3.64 | 5.51 | 6.11 | 4.51 | 6.13 | 4.87 | 3.27 | 3.48 | 6.51 | 32.42 |
| Year Highest Occurred | 1969 | 1979 | 1974 | 1965 | 1981 | 1981 | 1983 | 1968 | 1963 | 1975 | 1978 | 1977 | 1980 |
| Lowest Precipitation (in.) | 0.46 | 0.34 | 0.50 | 0.63 | 0.81 | 0.54 | 0.65 | 0.17 | 0.24 | 0.03 | 0.47 | 0.25 | 18.37 |
| Year Lowest Occurred | 1981 | 1983 | 1969 | 1983 | 1986 | 1961 | 1988 | 1988 | 1988 | 1987 | 1987 | 1986 | 1985 |
| Heating Degree Days (F) | 1659. | 1375. | 1364. | 1080. | 800. | 513. | 307. | 366. | 624. | 939. | 1311. | 1643. | 11981. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |