| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 18.7 | 25.3 | 37.8 | 55.3 | 70.0 | 78.8 | 85.0 | 83.7 | 72.1 | 60.2 | 39.5 | 23.9 | 54.2 |
| Highest Mean Max. Temperature (F) | 36.4 | 35.6 | 48.3 | 67.6 | 79.3 | 91.4 | 92.1 | 91.3 | 79.4 | 73.5 | 47.7 | 37.2 | 58.5 |
| Year Highest Occurred | 1990 | 1987 | 1986 | 1987 | 1977 | 1988 | 1988 | 1983 | 1976 | 1963 | 1987 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 1.7 | 10.5 | 27.7 | 41.3 | 60.1 | 70.6 | 79.3 | 75.8 | 58.7 | 53.0 | 25.7 | 7.8 | 50.1 |
| Year Lowest Occurred | 1982 | 1979 | 1969 | 1975 | 1979 | 1969 | 1962 | 1980 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 7.7 | 14.1 | 26.7 | 42.1 | 55.3 | 64.9 | 70.3 | 68.0 | 57.3 | 46.2 | 28.4 | 13.1 | 41.2 |
| Highest Mean Temperature (F) | 24.5 | 26.7 | 36.1 | 51.3 | 65.0 | 74.2 | 74.1 | 74.1 | 62.3 | 56.2 | 36.3 | 24.8 | 45.9 |
| Year Highest Occurred | 1990 | 1987 | 1986 | 1987 | 1977 | 1988 | 1988 | 1983 | 1963 | 1963 | 1980 | 1979 | 1987 |
| Lowest Mean Temperature (F) | -9.2 | -0.8 | 15.4 | 34.1 | 47.8 | 57.8 | 66.3 | 62.0 | 47.5 | 40.9 | 15.1 | -0.5 | 37.6 |
| Year Lowest Occurred | 1982 | 1979 | 1969 | 1979 | 1979 | 1969 | 1971 | 1977 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -3.3 | 2.8 | 15.5 | 28.9 | 40.7 | 50.9 | 55.5 | 52.4 | 42.4 | 32.1 | 17.3 | 2.3 | 28.1 |
| Highest Mean Min. Temperature (F) | 12.5 | 17.7 | 26.8 | 35.0 | 50.6 | 56.9 | 60.0 | 58.0 | 46.0 | 38.9 | 25.6 | 13.4 | 33.2 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1966 | 1973 | 1963 | 1963 | 1980 | 1982 | 1987 |
| Lowest Mean Min. Temperature (F) | -20.1 | -12.0 | 3.1 | 24.9 | 34.8 | 44.8 | 49.5 | 47.0 | 36.2 | 26.1 | 4.4 | -8.7 | 25.0 |
| Year Lowest Occurred | 1982 | 1979 | 1969 | 1961 | 1967 | 1982 | 1967 | 1967 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.51 | 0.44 | 0.77 | 1.64 | 2.20 | 3.49 | 2.77 | 2.34 | 1.98 | 1.10 | 0.53 | 0.39 | 18.16 |
| Highest Precipitation (in.) | 1.67 | 1.78 | 2.05 | 6.01 | 6.62 | 9.45 | 6.34 | 6.14 | 4.98 | 4.73 | 2.92 | 0.92 | 28.24 |
| Year Highest Occurred | 1982 | 1969 | 1979 | 1986 | 1962 | 1964 | 1987 | 1989 | 1973 | 1982 | 1986 | 1977 | 1986 |
| Lowest Precipitation (in.) | 0.02 | 0.02 | 0.02 | 0.00 | 0.53 | 0.68 | 0.29 | 0.34 | 0.10 | 0.04 | 0.00 | 0.02 | 10.13 |
| Year Lowest Occurred | 1961 | 1965 | 1986 | 1980 | 1990 | 1961 | 1985 | 1976 | 1974 | 1988 | 1971 | 1989 | 1988 |
| Heating Degree Days (F) | 1776. | 1425. | 1187. | 687. | 321. | 104. | 14. | 66. | 250. | 583. | 1098. | 1609. | 9120. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 20. | 101. | 178. | 159. | 19. | 0. | 0. | 0. | 477. |