| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 24.6 | 30.1 | 38.3 | 50.7 | 61.5 | 71.6 | 80.2 | 78.5 | 68.5 | 57.3 | 38.9 | 26.8 | 52.3 |
| Highest Mean Max. Temperature (F) | 34.5 | 41.5 | 45.6 | 60.9 | 69.4 | 79.2 | 84.6 | 83.8 | 74.3 | 64.9 | 46.3 | 38.6 | 55.2 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1987 | 1969 | 1977 | 1988 | 1971 | 1990 | 1988 | 1962 | 1962 | 1981 |
| Lowest Mean Max. Temperature (F) | 13.5 | 19.3 | 30.8 | 43.4 | 56.3 | 65.8 | 76.0 | 72.3 | 59.5 | 46.9 | 32.6 | 18.7 | 48.3 |
| Year Lowest Occurred | 1979 | 1989 | 1969 | 1975 | 1977 | 1964 | 1983 | 1968 | 1965 | 1969 | 1985 | 1978 | 1984 |
| Mean Temperature (F) | 8.0 | 13.6 | 22.9 | 34.7 | 44.9 | 54.0 | 60.2 | 57.1 | 47.1 | 37.1 | 22.6 | 10.2 | 34.4 |
| Highest Mean Temperature (F) | 18.6 | 26.5 | 30.5 | 40.7 | 48.8 | 58.6 | 63.4 | 60.4 | 52.8 | 42.6 | 27.7 | 22.8 | 37.6 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1987 | 1976 | 1988 | 1989 | 1971 | 1963 | 1988 | 1962 | 1980 | 1981 |
| Lowest Mean Temperature (F) | -3.3 | 4.1 | 11.9 | 29.4 | 39.7 | 49.9 | 57.2 | 54.3 | 41.8 | 30.4 | 16.3 | 1.6 | 31.3 |
| Year Lowest Occurred | 1979 | 1985 | 1969 | 1970 | 1977 | 1975 | 1986 | 1975 | 1965 | 1969 | 1979 | 1978 | 1984 |
| Mean Min. Temperature (F) | -8.5 | -2.9 | 7.5 | 18.7 | 28.3 | 36.3 | 40.1 | 35.7 | 25.7 | 16.7 | 6.2 | -6.3 | 16.5 |
| Highest Mean Min. Temperature (F) | 2.6 | 11.5 | 17.4 | 22.5 | 33.5 | 40.7 | 43.0 | 42.3 | 33.7 | 20.9 | 11.7 | 7.5 | 20.0 |
| Year Highest Occurred | 1981 | 1963 | 1983 | 1990 | 1980 | 1972 | 1975 | 1983 | 1963 | 1963 | 1970 | 1980 | 1981 |
| Lowest Mean Min. Temperature (F) | -20.1 | -15.0 | -7.0 | 14.1 | 23.0 | 33.1 | 36.7 | 31.6 | 19.4 | 11.7 | -1.4 | -15.9 | 12.9 |
| Year Lowest Occurred | 1979 | 1985 | 1969 | 1982 | 1977 | 1975 | 1969 | 1962 | 1964 | 1964 | 1979 | 1990 | 1985 |
| Mean Precipitation (in.) | 0.52 | 0.47 | 0.55 | 0.69 | 1.17 | 1.01 | 0.89 | 0.89 | 0.97 | 0.58 | 0.60 | 0.52 | 8.86 |
| Highest Precipitation (in.) | 3.05 | 2.21 | 2.81 | 2.33 | 3.67 | 2.96 | 2.69 | 2.95 | 3.17 | 1.92 | 1.98 | 1.68 | 13.77 |
| Year Highest Occurred | 1980 | 1986 | 1983 | 1971 | 1987 | 1972 | 1982 | 1968 | 1982 | 1971 | 1983 | 1981 | 1982 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.14 | 0.06 | 0.00 | 0.08 | 0.00 | 0.00 | 0.00 | 0.00 | 3.37 |
| Year Lowest Occurred | 1983 | 1988 | 1979 | 1979 | 1969 | 1978 | 1988 | 1962 | 1974 | 1989 | 1969 | 1989 | 1988 |
| Heating Degree Days (F) | 1767. | 1439. | 1305. | 909. | 623. | 330. | 156. | 248. | 537. | 865. | 1272. | 1699. | 11150. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 7. | 0. | 0. | 0. | 0. | 0. | 7. |