| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 18.6 | 25.7 | 37.9 | 53.8 | 67.1 | 76.4 | 81.6 | 77.9 | 67.5 | 55.8 | 38.0 | 22.7 | 51.9 |
| Highest Mean Max. Temperature (F) | 30.9 | 37.0 | 48.0 | 64.0 | 76.3 | 82.3 | 86.8 | 85.3 | 72.1 | 69.0 | 44.8 | 30.0 | 56.5 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1988 | 1961 | 1963 | 1963 | 1963 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 9.4 | 16.4 | 29.4 | 46.5 | 59.1 | 70.2 | 75.8 | 72.2 | 58.8 | 48.0 | 29.0 | 11.9 | 49.0 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1975 | 1974 | 1969 | 1978 | 1977 | 1965 | 1976 | 1976 | 1983 | 1979 |
| Mean Temperature (F) | 5.5 | 11.5 | 25.5 | 40.6 | 52.8 | 62.0 | 67.6 | 64.3 | 54.8 | 43.8 | 28.3 | 12.1 | 39.1 |
| Highest Mean Temperature (F) | 16.9 | 24.3 | 34.9 | 47.2 | 62.7 | 66.2 | 71.6 | 69.2 | 58.6 | 54.6 | 34.3 | 20.2 | 43.3 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1970 | 1974 | 1961 | 1978 | 1963 | 1963 | 1982 | 1987 |
| Lowest Mean Temperature (F) | -6.3 | 1.0 | 16.2 | 34.9 | 46.2 | 56.9 | 63.8 | 59.5 | 49.4 | 36.2 | 18.8 | -0.2 | 36.4 |
| Year Lowest Occurred | 1977 | 1989 | 1965 | 1975 | 1967 | 1969 | 1965 | 1985 | 1965 | 1976 | 1976 | 1983 | 1985 |
| Mean Min. Temperature (F) | -7.6 | -2.7 | 13.1 | 27.3 | 38.5 | 47.6 | 53.4 | 50.7 | 42.0 | 31.7 | 18.6 | 1.4 | 26.2 |
| Highest Mean Min. Temperature (F) | 3.6 | 12.4 | 24.5 | 34.3 | 49.0 | 51.9 | 58.0 | 56.8 | 45.9 | 40.6 | 24.8 | 11.9 | 30.0 |
| Year Highest Occurred | 1987 | 1983 | 1973 | 1977 | 1977 | 1973 | 1983 | 1973 | 1978 | 1971 | 1962 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -22.0 | -14.5 | 2.9 | 23.0 | 30.0 | 42.2 | 49.2 | 45.9 | 38.2 | 24.2 | 8.0 | -12.2 | 22.6 |
| Year Lowest Occurred | 1977 | 1989 | 1965 | 1972 | 1966 | 1985 | 1965 | 1986 | 1984 | 1987 | 1985 | 1983 | 1985 |
| Mean Precipitation (in.) | 1.06 | 0.81 | 1.70 | 2.12 | 3.50 | 3.73 | 4.35 | 4.66 | 3.70 | 2.61 | 1.82 | 1.16 | 31.22 |
| Highest Precipitation (in.) | 3.39 | 2.76 | 3.79 | 3.94 | 7.36 | 9.22 | 10.44 | 9.95 | 7.25 | 7.42 | 6.01 | 2.94 | 42.54 |
| Year Highest Occurred | 1967 | 1981 | 1977 | 1967 | 1962 | 1967 | 1968 | 1966 | 1988 | 1971 | 1975 | 1965 | 1968 |
| Lowest Precipitation (in.) | 0.07 | 0.09 | 0.10 | 0.27 | 0.11 | 1.09 | 1.08 | 0.63 | 0.69 | 0.47 | 0.24 | 0.25 | 16.33 |
| Year Lowest Occurred | 1981 | 1987 | 1969 | 1988 | 1976 | 1972 | 1975 | 1961 | 1976 | 1963 | 1962 | 1979 | 1976 |
| Heating Degree Days (F) | 1845. | 1498. | 1225. | 732. | 394. | 130. | 39. | 99. | 306. | 657. | 1101. | 1640. | 9666. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 16. | 40. | 120. | 77. | 0. | 0. | 0. | 0. | 253. |