| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 18.5 | 24.1 | 36.4 | 54.0 | 68.5 | 78.0 | 84.4 | 82.0 | 70.5 | 58.6 | 39.5 | 23.9 | 53.2 |
| Highest Mean Max. Temperature (F) | 33.6 | 39.0 | 48.5 | 66.6 | 78.1 | 90.1 | 90.2 | 89.3 | 76.4 | 70.1 | 47.6 | 35.3 | 58.9 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1988 | 1983 | 1990 | 1963 | 1981 | 1974 | 1987 |
| Lowest Mean Max. Temperature (F) | 5.6 | 9.0 | 25.6 | 41.9 | 61.0 | 70.6 | 77.1 | 75.4 | 57.3 | 50.4 | 27.0 | 9.4 | 49.0 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1975 | 1979 | 1969 | 1962 | 1977 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 7.7 | 13.5 | 26.7 | 43.2 | 56.4 | 66.2 | 71.9 | 69.2 | 58.2 | 46.6 | 29.7 | 13.8 | 41.9 |
| Highest Mean Temperature (F) | 22.6 | 29.2 | 36.6 | 51.6 | 63.3 | 73.8 | 77.8 | 75.5 | 63.5 | 57.1 | 36.2 | 24.3 | 46.8 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1975 | 1983 | 1978 | 1963 | 1981 | 1974 | 1987 |
| Lowest Mean Temperature (F) | -6.0 | -1.0 | 15.9 | 36.2 | 50.0 | 59.6 | 66.4 | 62.6 | 49.2 | 41.7 | 16.8 | -0.2 | 38.4 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1979 | 1967 | 1969 | 1971 | 1977 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -3.2 | 2.8 | 17.0 | 32.3 | 44.2 | 54.3 | 59.3 | 56.3 | 45.9 | 34.5 | 19.8 | 3.7 | 30.6 |
| Highest Mean Min. Temperature (F) | 11.5 | 19.3 | 29.6 | 37.9 | 50.1 | 58.2 | 66.0 | 61.6 | 50.8 | 44.1 | 26.9 | 15.0 | 34.7 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1976 | 1972 | 1971 | 1975 | 1983 | 1978 | 1963 | 1975 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -17.6 | -10.9 | 6.2 | 27.2 | 37.5 | 48.6 | 53.4 | 49.8 | 41.0 | 28.9 | 6.5 | -9.8 | 27.1 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1961 | 1967 | 1969 | 1971 | 1977 | 1965 | 1988 | 1985 | 1983 | 1989 |
| Mean Precipitation (in.) | 0.63 | 0.61 | 1.05 | 2.04 | 2.64 | 3.65 | 3.03 | 2.51 | 2.30 | 1.50 | 0.80 | 0.52 | 21.28 |
| Highest Precipitation (in.) | 2.33 | 1.75 | 3.03 | 6.66 | 6.81 | 8.55 | 9.45 | 5.72 | 7.16 | 5.42 | 3.09 | 1.58 | 32.84 |
| Year Highest Occurred | 1989 | 1962 | 1983 | 1986 | 1962 | 1967 | 1962 | 1966 | 1968 | 1984 | 1988 | 1964 | 1962 |
| Lowest Precipitation (in.) | 0.03 | 0.03 | 0.07 | 0.15 | 0.37 | 0.45 | 0.58 | 0.12 | 0.08 | 0.02 | 0.00 | 0.02 | 8.62 |
| Year Lowest Occurred | 1974 | 1968 | 1967 | 1980 | 1980 | 1987 | 1980 | 1969 | 1979 | 1976 | 1975 | 1974 | 1976 |
| Heating Degree Days (F) | 1776. | 1442. | 1187. | 654. | 292. | 72. | 15. | 39. | 220. | 570. | 1059. | 1587. | 8913. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 26. | 108. | 229. | 169. | 16. | 0. | 0. | 0. | 548. |