| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 15.7 | 22.7 | 35.7 | 51.5 | 65.7 | 74.8 | 80.4 | 77.6 | 66.4 | 54.4 | 36.1 | 20.6 | 50.1 |
| Highest Mean Max. Temperature (F) | 26.4 | 36.1 | 43.7 | 64.2 | 77.2 | 84.8 | 85.4 | 83.5 | 71.1 | 68.8 | 43.4 | 29.1 | 55.4 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1988 | 1961 | 1978 | 1963 | 1963 | 1986 | 1987 |
| Lowest Mean Max. Temperature (F) | 3.9 | 13.4 | 25.9 | 42.8 | 57.6 | 67.4 | 75.4 | 71.3 | 56.0 | 46.6 | 28.9 | 7.8 | 47.0 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1975 | 1979 | 1969 | 1962 | 1977 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 2.4 | 8.4 | 23.1 | 39.2 | 52.6 | 62.3 | 67.7 | 64.9 | 54.8 | 43.4 | 26.5 | 9.0 | 37.9 |
| Highest Mean Temperature (F) | 16.0 | 24.9 | 33.4 | 47.7 | 64.1 | 69.8 | 71.4 | 70.0 | 59.1 | 54.3 | 33.3 | 19.9 | 43.4 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1974 | 1983 | 1978 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Temperature (F) | -11.1 | -1.5 | 11.0 | 32.4 | 45.6 | 55.4 | 63.4 | 59.0 | 47.0 | 37.3 | 17.2 | -4.6 | 35.3 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1975 | 1967 | 1969 | 1971 | 1977 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -10.9 | -6.0 | 10.5 | 26.9 | 39.5 | 49.8 | 55.0 | 52.2 | 43.1 | 32.4 | 16.8 | -2.6 | 25.6 |
| Highest Mean Min. Temperature (F) | 5.6 | 13.6 | 23.2 | 32.7 | 51.0 | 55.4 | 58.8 | 57.0 | 47.1 | 39.8 | 25.1 | 11.1 | 31.3 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1963 | 1974 | 1983 | 1978 | 1963 | 1962 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -26.0 | -16.3 | -4.0 | 21.1 | 32.8 | 43.0 | 50.9 | 46.6 | 37.8 | 24.5 | 5.5 | -17.0 | 22.8 |
| Year Lowest Occurred | 1982 | 1989 | 1965 | 1979 | 1967 | 1982 | 1971 | 1977 | 1974 | 1976 | 1985 | 1983 | 1985 |
| Mean Precipitation (in.) | 0.85 | 0.56 | 1.18 | 2.20 | 2.88 | 4.00 | 3.91 | 3.32 | 2.84 | 2.39 | 1.10 | 0.89 | 26.12 |
| Highest Precipitation (in.) | 4.15 | 1.90 | 2.45 | 4.59 | 9.08 | 6.64 | 8.74 | 8.44 | 5.82 | 6.56 | 3.37 | 4.46 | 35.31 |
| Year Highest Occurred | 1969 | 1986 | 1979 | 1986 | 1962 | 1983 | 1987 | 1966 | 1973 | 1971 | 1977 | 1968 | 1962 |
| Lowest Precipitation (in.) | 0.04 | 0.04 | 0.14 | 0.12 | 0.12 | 0.50 | 0.78 | 0.64 | 0.46 | 0.27 | 0.12 | 0.10 | 14.27 |
| Year Lowest Occurred | 1963 | 1988 | 1969 | 1980 | 1976 | 1987 | 1984 | 1970 | 1976 | 1962 | 1976 | 1982 | 1976 |
| Heating Degree Days (F) | 1941. | 1585. | 1299. | 774. | 403. | 144. | 41. | 90. | 311. | 670. | 1155. | 1736. | 10149. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 19. | 63. | 125. | 87. | 0. | 0. | 0. | 0. | 294. |