| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 10.8 | 18.8 | 32.1 | 50.5 | 65.3 | 74.9 | 79.6 | 77.7 | 66.7 | 54.2 | 33.4 | 16.2 | 48.4 |
| Highest Mean Max. Temperature (F) | 22.7 | 31.6 | 42.9 | 64.0 | 77.1 | 84.4 | 84.8 | 85.1 | 73.3 | 67.8 | 40.7 | 25.9 | 53.3 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1989 | 1961 | 1967 | 1963 | 1981 | 1974 | 1987 |
| Lowest Mean Max. Temperature (F) | -1.8 | 9.5 | 21.8 | 40.2 | 55.0 | 66.4 | 74.1 | 70.5 | 55.2 | 45.7 | 20.7 | 2.4 | 44.4 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1979 | 1979 | 1969 | 1971 | 1985 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | -0.8 | 6.2 | 20.2 | 38.3 | 51.9 | 61.6 | 66.3 | 64.0 | 53.6 | 42.3 | 24.2 | 6.0 | 36.2 |
| Highest Mean Temperature (F) | 12.1 | 21.7 | 32.3 | 47.7 | 63.5 | 69.2 | 71.1 | 70.6 | 58.1 | 53.1 | 32.9 | 16.7 | 41.2 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1983 | 1983 | 1967 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Temperature (F) | -13.2 | -3.6 | 8.5 | 30.2 | 44.5 | 53.7 | 61.5 | 58.4 | 44.9 | 36.6 | 12.3 | -6.3 | 32.9 |
| Year Lowest Occurred | 1982 | 1989 | 1965 | 1979 | 1979 | 1969 | 1971 | 1977 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -12.3 | -6.5 | 8.3 | 26.1 | 38.5 | 48.2 | 53.0 | 50.3 | 40.4 | 30.4 | 14.8 | -4.1 | 23.9 |
| Highest Mean Min. Temperature (F) | 1.5 | 13.4 | 22.1 | 31.4 | 49.8 | 54.0 | 59.3 | 56.2 | 45.2 | 38.3 | 25.0 | 9.2 | 29.1 |
| Year Highest Occurred | 1990 | 1984 | 1977 | 1987 | 1977 | 1988 | 1983 | 1983 | 1978 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -25.5 | -19.5 | -4.8 | 20.2 | 32.8 | 39.5 | 48.0 | 43.7 | 34.5 | 23.3 | 3.8 | -15.6 | 20.9 |
| Year Lowest Occurred | 1966 | 1967 | 1965 | 1979 | 1983 | 1982 | 1972 | 1977 | 1974 | 1976 | 1985 | 1976 | 1972 |
| Mean Precipitation (in.) | 0.74 | 0.43 | 0.91 | 1.57 | 2.48 | 3.83 | 3.30 | 2.92 | 2.71 | 1.56 | 0.98 | 0.68 | 22.11 |
| Highest Precipitation (in.) | 3.28 | 1.09 | 2.83 | 4.56 | 5.86 | 8.43 | 7.58 | 7.81 | 9.22 | 4.89 | 3.08 | 1.72 | 32.85 |
| Year Highest Occurred | 1969 | 1983 | 1966 | 1967 | 1962 | 1968 | 1982 | 1974 | 1973 | 1971 | 1977 | 1973 | 1968 |
| Lowest Precipitation (in.) | 0.05 | 0.05 | 0.00 | 0.00 | 0.57 | 0.69 | 0.97 | 0.87 | 0.34 | 0.20 | 0.00 | 0.11 | 13.46 |
| Year Lowest Occurred | 1988 | 1981 | 1969 | 1988 | 1976 | 1961 | 1981 | 1967 | 1976 | 1963 | 1976 | 1983 | 1980 |
| Heating Degree Days (F) | 2040. | 1646. | 1389. | 801. | 425. | 157. | 65. | 117. | 347. | 704. | 1224. | 1829. | 10744. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 19. | 55. | 105. | 86. | 0. | 0. | 0. | 0. | 265. |