| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 10.2 | 17.0 | 31.2 | 50.4 | 66.1 | 75.2 | 80.1 | 78.7 | 66.9 | 53.5 | 32.4 | 15.7 | 48.1 |
| Highest Mean Max. Temperature (F) | 25.2 | 29.2 | 41.1 | 62.9 | 77.4 | 86.0 | 86.1 | 85.7 | 73.6 | 67.5 | 41.0 | 25.5 | 53.2 |
| Year Highest Occurred | 1990 | 1987 | 1981 | 1987 | 1977 | 1988 | 1989 | 1961 | 1990 | 1963 | 1981 | 1974 | 1987 |
| Lowest Mean Max. Temperature (F) | -3.8 | 5.5 | 21.5 | 40.8 | 56.5 | 65.9 | 75.1 | 71.5 | 55.3 | 44.8 | 21.6 | 5.0 | 44.3 |
| Year Lowest Occurred | 1966 | 1979 | 1965 | 1979 | 1979 | 1969 | 1971 | 1985 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | -0.2 | 6.7 | 21.3 | 39.6 | 53.7 | 63.0 | 67.6 | 65.3 | 54.6 | 42.8 | 24.1 | 6.4 | 37.1 |
| Highest Mean Temperature (F) | 14.9 | 21.9 | 32.4 | 49.4 | 64.9 | 72.6 | 73.1 | 71.8 | 59.5 | 54.9 | 32.5 | 18.8 | 43.0 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1989 | 1983 | 1967 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Temperature (F) | -14.1 | -3.1 | 10.0 | 32.1 | 47.3 | 53.6 | 61.9 | 58.4 | 46.3 | 36.6 | 16.1 | -4.3 | 33.9 |
| Year Lowest Occurred | 1966 | 1972 | 1970 | 1979 | 1979 | 1969 | 1971 | 1977 | 1965 | 1969 | 1978 | 1983 | 1978 |
| Mean Min. Temperature (F) | -10.7 | -3.7 | 11.3 | 28.7 | 41.3 | 50.7 | 55.1 | 51.9 | 42.2 | 32.1 | 15.8 | -2.9 | 26.0 |
| Highest Mean Min. Temperature (F) | 5.6 | 14.6 | 23.7 | 35.8 | 52.3 | 59.1 | 61.0 | 58.1 | 46.4 | 42.3 | 23.9 | 12.9 | 32.7 |
| Year Highest Occurred | 1980 | 1987 | 1973 | 1987 | 1977 | 1988 | 1983 | 1983 | 1963 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -26.2 | -15.6 | -4.0 | 23.4 | 35.2 | 41.3 | 48.7 | 45.1 | 34.7 | 26.4 | 4.4 | -13.6 | 21.9 |
| Year Lowest Occurred | 1979 | 1972 | 1970 | 1979 | 1973 | 1969 | 1971 | 1977 | 1974 | 1976 | 1978 | 1983 | 1972 |
| Mean Precipitation (in.) | 0.58 | 0.42 | 0.76 | 1.35 | 2.23 | 3.55 | 2.83 | 2.21 | 2.15 | 1.33 | 0.75 | 0.61 | 18.77 |
| Highest Precipitation (in.) | 1.94 | 1.51 | 3.32 | 3.28 | 6.24 | 7.20 | 5.98 | 6.41 | 5.38 | 3.91 | 2.83 | 1.33 | 25.93 |
| Year Highest Occurred | 1989 | 1987 | 1966 | 1967 | 1977 | 1981 | 1968 | 1985 | 1965 | 1982 | 1977 | 1966 | 1977 |
| Lowest Precipitation (in.) | 0.04 | 0.00 | 0.02 | 0.00 | 0.34 | 0.51 | 0.28 | 0.61 | 0.23 | 0.22 | 0.00 | 0.00 | 13.18 |
| Year Lowest Occurred | 1978 | 1988 | 1969 | 1988 | 1980 | 1961 | 1989 | 1963 | 1976 | 1978 | 1976 | 1979 | 1967 |
| Heating Degree Days (F) | 2021. | 1632. | 1355. | 762. | 376. | 143. | 57. | 98. | 321. | 688. | 1227. | 1817. | 10497. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 26. | 83. | 137. | 108. | 9. | 0. | 0. | 0. | 363. |