| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 24.1 | 27.9 | 38.7 | 53.8 | 67.1 | 75.8 | 80.9 | 77.8 | 68.8 | 57.3 | 41.6 | 27.9 | 53.5 |
| Highest Mean Max. Temperature (F) | 34.0 | 36.3 | 46.6 | 59.9 | 76.3 | 82.9 | 85.5 | 83.8 | 71.9 | 68.5 | 48.6 | 34.3 | 56.9 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1977 | 1988 | 1966 | 1969 | 1976 | 1963 | 1975 | 1965 | 1987 |
| Lowest Mean Max. Temperature (F) | 14.5 | 20.2 | 31.8 | 47.9 | 60.5 | 67.5 | 76.1 | 73.7 | 64.6 | 51.8 | 36.0 | 18.9 | 51.0 |
| Year Lowest Occurred | 1963 | 1979 | 1965 | 1972 | 1983 | 1969 | 1962 | 1964 | 1974 | 1987 | 1976 | 1989 | 1979 |
| Mean Temperature (F) | 13.1 | 16.1 | 27.9 | 42.1 | 53.7 | 62.5 | 67.8 | 65.3 | 57.0 | 46.3 | 32.8 | 18.9 | 42.0 |
| Highest Mean Temperature (F) | 21.2 | 26.2 | 37.0 | 47.1 | 60.8 | 67.2 | 71.8 | 70.0 | 60.4 | 54.7 | 37.8 | 27.3 | 44.9 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1986 | 1977 | 1971 | 1983 | 1983 | 1978 | 1963 | 1975 | 1965 | 1987 |
| Lowest Mean Temperature (F) | 5.0 | 7.4 | 21.8 | 36.6 | 48.1 | 56.5 | 63.4 | 61.6 | 52.7 | 40.6 | 26.0 | 7.2 | 39.6 |
| Year Lowest Occurred | 1963 | 1963 | 1989 | 1975 | 1967 | 1982 | 1962 | 1986 | 1974 | 1987 | 1976 | 1985 | 1989 |
| Mean Min. Temperature (F) | 2.2 | 4.3 | 17.1 | 30.4 | 40.3 | 49.2 | 54.6 | 52.8 | 45.2 | 35.3 | 24.0 | 9.9 | 30.4 |
| Highest Mean Min. Temperature (F) | 10.7 | 16.1 | 27.3 | 36.0 | 46.5 | 53.5 | 58.5 | 57.5 | 50.3 | 45.5 | 29.2 | 20.2 | 34.0 |
| Year Highest Occurred | 1964 | 1984 | 1973 | 1986 | 1975 | 1971 | 1987 | 1980 | 1978 | 1971 | 1988 | 1965 | 1973 |
| Lowest Mean Min. Temperature (F) | -8.1 | -6.4 | 9.0 | 24.1 | 34.4 | 41.6 | 49.8 | 48.4 | 39.9 | 27.9 | 16.0 | -6.0 | 26.9 |
| Year Lowest Occurred | 1982 | 1963 | 1989 | 1982 | 1967 | 1982 | 1965 | 1967 | 1976 | 1976 | 1976 | 1985 | 1989 |
| Mean Precipitation (in.) | 1.56 | 1.16 | 2.06 | 2.52 | 3.36 | 3.71 | 3.47 | 3.74 | 3.65 | 2.67 | 2.39 | 2.08 | 32.37 |
| Highest Precipitation (in.) | 4.41 | 2.89 | 6.15 | 5.69 | 7.73 | 10.48 | 6.95 | 8.69 | 7.69 | 5.24 | 6.27 | 4.85 | 42.27 |
| Year Highest Occurred | 1969 | 1971 | 1977 | 1968 | 1973 | 1968 | 1990 | 1985 | 1965 | 1982 | 1985 | 1982 | 1968 |
| Lowest Precipitation (in.) | 0.21 | 0.06 | 0.39 | 0.32 | 0.92 | 0.79 | 0.99 | 0.83 | 0.63 | 0.62 | 0.25 | 0.42 | 22.37 |
| Year Lowest Occurred | 1981 | 1969 | 1981 | 1989 | 1986 | 1988 | 1981 | 1970 | 1967 | 1964 | 1976 | 1986 | 1989 |
| Heating Degree Days (F) | 1609. | 1369. | 1150. | 687. | 365. | 123. | 34. | 68. | 240. | 580. | 966. | 1429. | 8620. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 15. | 48. | 121. | 77. | 0. | 0. | 0. | 0. | 261. |