| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 20.7 | 26.0 | 38.3 | 54.6 | 68.7 | 78.8 | 82.8 | 79.8 | 70.8 | 59.0 | 41.4 | 25.3 | 53.9 |
| Highest Mean Max. Temperature (F) | 34.8 | 41.3 | 49.7 | 64.0 | 78.1 | 87.5 | 89.7 | 87.8 | 76.0 | 70.8 | 48.0 | 35.5 | 59.2 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1988 | 1988 | 1983 | 1983 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Max. Temperature (F) | 6.9 | 12.5 | 25.7 | 43.8 | 62.6 | 70.7 | 77.6 | 71.2 | 61.8 | 51.6 | 32.5 | 11.7 | 49.3 |
| Year Lowest Occurred | 1978 | 1978 | 1965 | 1975 | 1968 | 1969 | 1978 | 1977 | 1965 | 1977 | 1985 | 1983 | 1978 |
| Mean Temperature (F) | 11.8 | 17.0 | 30.0 | 44.9 | 58.1 | 68.1 | 72.5 | 69.6 | 60.2 | 48.6 | 32.8 | 16.8 | 44.2 |
| Highest Mean Temperature (F) | 25.0 | 30.7 | 38.8 | 51.5 | 64.3 | 73.2 | 77.8 | 75.9 | 63.5 | 60.6 | 39.7 | 29.0 | 49.0 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1983 | 1983 | 1990 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Temperature (F) | -3.2 | 4.2 | 18.7 | 37.5 | 52.1 | 62.4 | 68.4 | 62.0 | 54.8 | 42.0 | 24.5 | 2.7 | 39.3 |
| Year Lowest Occurred | 1977 | 1978 | 1965 | 1979 | 1979 | 1982 | 1978 | 1977 | 1965 | 1977 | 1985 | 1983 | 1978 |
| Mean Min. Temperature (F) | 2.8 | 7.9 | 21.6 | 35.2 | 47.4 | 57.3 | 62.2 | 59.3 | 49.6 | 38.1 | 24.2 | 8.3 | 34.5 |
| Highest Mean Min. Temperature (F) | 15.2 | 20.1 | 32.4 | 40.3 | 54.3 | 61.9 | 66.4 | 64.0 | 53.4 | 50.4 | 31.3 | 22.5 | 38.8 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1985 | 1962 | 1963 | 1969 | 1983 | 1963 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -13.4 | -4.2 | 11.6 | 26.3 | 37.3 | 52.3 | 57.8 | 52.7 | 44.7 | 30.2 | 14.3 | -6.4 | 29.3 |
| Year Lowest Occurred | 1977 | 1978 | 1965 | 1979 | 1979 | 1982 | 1971 | 1977 | 1976 | 1976 | 1976 | 1983 | 1978 |
| Mean Precipitation (in.) | 0.78 | 0.82 | 1.87 | 3.15 | 3.64 | 4.54 | 4.16 | 3.97 | 3.52 | 2.53 | 1.66 | 1.07 | 31.71 |
| Highest Precipitation (in.) | 2.57 | 3.19 | 4.44 | 5.68 | 9.16 | 9.87 | 10.39 | 11.74 | 9.08 | 6.84 | 5.17 | 3.02 | 45.23 |
| Year Highest Occurred | 1975 | 1971 | 1983 | 1990 | 1982 | 1978 | 1961 | 1980 | 1965 | 1984 | 1975 | 1982 | 1968 |
| Lowest Precipitation (in.) | 0.02 | 0.00 | 0.28 | 0.83 | 1.21 | 1.40 | 1.10 | 0.71 | 0.50 | 0.23 | 0.05 | 0.03 | 19.07 |
| Year Lowest Occurred | 1962 | 1987 | 1978 | 1969 | 1989 | 1988 | 1983 | 1970 | 1990 | 1975 | 1980 | 1962 | 1976 |
| Heating Degree Days (F) | 1649. | 1344. | 1085. | 603. | 251. | 38. | 9. | 31. | 160. | 516. | 966. | 1494. | 8146. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 37. | 131. | 241. | 174. | 16. | 8. | 0. | 0. | 607. |