| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 24.6 | 30.1 | 42.2 | 60.1 | 73.5 | 82.1 | 86.1 | 83.1 | 74.9 | 62.5 | 43.9 | 28.6 | 57.6 |
| Highest Mean Max. Temperature (F) | 39.0 | 46.0 | 52.6 | 73.2 | 86.3 | 94.0 | 94.0 | 91.2 | 82.4 | 75.0 | 51.5 | 37.0 | 64.8 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1988 | 1988 | 1988 | 1988 | 1988 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Max. Temperature (F) | 11.4 | 21.9 | 29.2 | 47.8 | 67.3 | 73.2 | 80.9 | 77.6 | 64.1 | 56.6 | 33.8 | 12.4 | 53.8 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1967 | 1969 | 1972 | 1977 | 1965 | 1981 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 13.9 | 19.4 | 32.0 | 47.9 | 60.2 | 69.4 | 73.8 | 71.0 | 62.3 | 50.3 | 34.8 | 19.5 | 46.2 |
| Highest Mean Temperature (F) | 28.3 | 34.8 | 41.5 | 56.3 | 67.8 | 76.9 | 78.0 | 77.9 | 67.0 | 60.0 | 41.0 | 29.9 | 52.4 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1988 | 1988 | 1988 | 1983 | 1988 | 1963 | 1987 | 1965 | 1987 |
| Lowest Mean Temperature (F) | -0.4 | 10.2 | 18.6 | 39.7 | 54.2 | 62.2 | 69.2 | 65.7 | 55.5 | 43.6 | 26.3 | 3.9 | 42.7 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1967 | 1969 | 1971 | 1977 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 3.2 | 8.6 | 21.7 | 35.6 | 47.0 | 56.6 | 61.5 | 58.9 | 49.7 | 38.1 | 25.7 | 10.4 | 34.8 |
| Highest Mean Min. Temperature (F) | 17.6 | 23.6 | 33.3 | 40.9 | 52.6 | 61.5 | 66.2 | 65.8 | 54.5 | 44.9 | 32.0 | 22.8 | 40.0 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1962 | 1971 | 1983 | 1983 | 1990 | 1963 | 1987 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -12.1 | -1.6 | 7.9 | 30.0 | 40.4 | 51.1 | 57.5 | 53.7 | 42.5 | 30.4 | 16.9 | -4.7 | 31.6 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1982 | 1966 | 1969 | 1971 | 1977 | 1974 | 1976 | 1976 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.73 | 0.64 | 1.79 | 2.52 | 3.46 | 4.24 | 4.11 | 3.92 | 3.06 | 2.07 | 1.38 | 0.99 | 28.91 |
| Highest Precipitation (in.) | 2.61 | 1.85 | 5.36 | 4.97 | 7.30 | 11.50 | 8.59 | 10.62 | 9.58 | 5.79 | 4.43 | 3.00 | 41.16 |
| Year Highest Occurred | 1975 | 1971 | 1977 | 1986 | 1961 | 1971 | 1961 | 1968 | 1986 | 1970 | 1975 | 1982 | 1968 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.52 | 0.04 | 0.74 | 0.73 | 0.48 | 1.04 | 0.51 | 0.25 | 0.00 | 0.12 | 16.25 |
| Year Lowest Occurred | 1974 | 1987 | 1978 | 1987 | 1976 | 1988 | 1975 | 1971 | 1974 | 1978 | 1976 | 1962 | 1976 |
| Heating Degree Days (F) | 1584. | 1277. | 1023. | 519. | 217. | 36. | 8. | 23. | 120. | 462. | 906. | 1411. | 7586. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 6. | 68. | 168. | 280. | 209. | 39. | 6. | 0. | 0. | 776. |