| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 20.3 | 25.8 | 38.4 | 55.4 | 68.1 | 77.3 | 83.7 | 81.3 | 71.2 | 59.0 | 39.8 | 24.2 | 53.7 |
| Highest Mean Max. Temperature (F) | 33.9 | 39.6 | 51.5 | 64.4 | 76.2 | 87.8 | 90.0 | 89.1 | 78.5 | 70.3 | 47.0 | 35.9 | 57.8 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1981 | 1977 | 1988 | 1976 | 1976 | 1990 | 1963 | 1963 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 8.2 | 14.3 | 26.9 | 43.3 | 62.7 | 69.7 | 78.0 | 72.6 | 58.2 | 50.5 | 24.9 | 6.1 | 50.4 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1975 | 1968 | 1969 | 1962 | 1985 | 1965 | 1969 | 1985 | 1983 | 1985 |
| Mean Temperature (F) | 9.3 | 14.9 | 27.6 | 43.1 | 56.0 | 65.9 | 71.9 | 69.0 | 58.6 | 46.3 | 29.4 | 14.1 | 42.2 |
| Highest Mean Temperature (F) | 24.2 | 30.3 | 36.1 | 50.3 | 64.3 | 73.8 | 76.9 | 75.9 | 64.6 | 55.3 | 35.7 | 24.5 | 47.1 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1974 | 1983 | 1978 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Temperature (F) | -2.5 | 3.3 | 16.1 | 35.5 | 50.9 | 59.0 | 67.1 | 63.4 | 48.1 | 40.2 | 16.7 | -2.2 | 39.4 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1975 | 1968 | 1969 | 1971 | 1985 | 1965 | 1969 | 1985 | 1983 | 1972 |
| Mean Min. Temperature (F) | -1.7 | 3.9 | 16.8 | 30.8 | 43.8 | 54.5 | 60.0 | 56.5 | 45.9 | 33.4 | 19.0 | 3.9 | 30.6 |
| Highest Mean Min. Temperature (F) | 14.5 | 20.9 | 26.3 | 36.7 | 52.4 | 59.7 | 64.2 | 63.0 | 51.8 | 40.2 | 25.7 | 16.0 | 36.3 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1988 | 1983 | 1983 | 1978 | 1963 | 1987 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -14.3 | -8.9 | 4.7 | 25.0 | 37.6 | 48.2 | 54.9 | 52.7 | 38.0 | 28.2 | 8.4 | -10.5 | 28.4 |
| Year Lowest Occurred | 1982 | 1979 | 1964 | 1966 | 1967 | 1969 | 1971 | 1977 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.53 | 0.66 | 1.31 | 1.98 | 2.80 | 3.39 | 2.90 | 2.62 | 1.85 | 1.53 | 0.85 | 0.56 | 20.98 |
| Highest Precipitation (in.) | 1.78 | 2.01 | 3.44 | 6.68 | 9.26 | 6.24 | 6.79 | 5.86 | 5.79 | 4.80 | 3.05 | 1.54 | 30.89 |
| Year Highest Occurred | 1979 | 1969 | 1977 | 1986 | 1972 | 1984 | 1966 | 1966 | 1986 | 1982 | 1977 | 1977 | 1977 |
| Lowest Precipitation (in.) | 0.00 | 0.02 | 0.11 | 0.33 | 0.53 | 0.86 | 0.09 | 0.43 | 0.21 | 0.12 | 0.01 | 0.00 | 10.59 |
| Year Lowest Occurred | 1990 | 1983 | 1971 | 1987 | 1967 | 1987 | 1976 | 1970 | 1979 | 1964 | 1990 | 1986 | 1976 |
| Heating Degree Days (F) | 1727. | 1403. | 1159. | 657. | 296. | 82. | 17. | 44. | 221. | 580. | 1068. | 1578. | 8832. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 17. | 109. | 231. | 168. | 29. | 0. | 0. | 0. | 554. |