| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 21.8 | 26.7 | 38.8 | 55.8 | 69.3 | 78.8 | 83.6 | 80.9 | 71.1 | 59.2 | 40.5 | 25.9 | 54.4 |
| Highest Mean Max. Temperature (F) | 37.3 | 42.3 | 52.7 | 68.3 | 78.1 | 88.1 | 88.7 | 87.5 | 77.8 | 70.3 | 47.9 | 35.5 | 59.8 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1966 | 1983 | 1978 | 1963 | 1963 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 9.3 | 14.9 | 26.0 | 43.9 | 63.8 | 72.1 | 78.8 | 75.3 | 59.6 | 52.4 | 21.5 | 9.1 | 51.0 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1975 | 1979 | 1969 | 1971 | 1985 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 12.9 | 18.2 | 30.4 | 45.4 | 57.5 | 67.2 | 72.2 | 69.7 | 60.4 | 48.9 | 32.4 | 17.9 | 44.4 |
| Highest Mean Temperature (F) | 27.3 | 32.3 | 40.1 | 53.3 | 66.0 | 73.7 | 76.4 | 75.8 | 66.9 | 59.2 | 39.4 | 28.8 | 49.0 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1974 | 1983 | 1978 | 1963 | 1981 | 1965 | 1987 |
| Lowest Mean Temperature (F) | 2.1 | 6.2 | 17.3 | 38.1 | 52.5 | 60.5 | 67.6 | 65.4 | 52.3 | 44.0 | 15.4 | 2.6 | 41.8 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1975 | 1968 | 1969 | 1971 | 1985 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 4.0 | 9.7 | 21.9 | 34.9 | 45.7 | 55.5 | 60.7 | 58.4 | 49.7 | 38.6 | 24.3 | 9.8 | 34.4 |
| Highest Mean Min. Temperature (F) | 17.3 | 23.9 | 32.1 | 40.7 | 53.8 | 59.4 | 65.2 | 64.1 | 56.0 | 48.0 | 31.2 | 22.6 | 38.1 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1977 | 1977 | 1971 | 1983 | 1983 | 1978 | 1963 | 1981 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -8.0 | -2.5 | 8.6 | 28.8 | 39.9 | 48.9 | 56.3 | 54.9 | 44.9 | 32.2 | 9.2 | -4.0 | 31.4 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1961 | 1967 | 1969 | 1971 | 1967 | 1965 | 1988 | 1985 | 1983 | 1989 |
| Mean Precipitation (in.) | 0.48 | 0.52 | 1.54 | 2.34 | 3.16 | 3.81 | 3.45 | 2.60 | 2.77 | 1.86 | 1.17 | 0.66 | 24.36 |
| Highest Precipitation (in.) | 2.29 | 1.32 | 4.96 | 5.35 | 6.76 | 9.49 | 10.96 | 6.22 | 7.09 | 5.81 | 4.73 | 1.81 | 37.38 |
| Year Highest Occurred | 1975 | 1977 | 1977 | 1986 | 1965 | 1971 | 1963 | 1981 | 1986 | 1984 | 1983 | 1968 | 1977 |
| Lowest Precipitation (in.) | 0.04 | 0.02 | 0.10 | 0.39 | 0.21 | 1.47 | 0.15 | 0.81 | 0.05 | 0.06 | 0.00 | 0.00 | 14.14 |
| Year Lowest Occurred | 1990 | 1970 | 1967 | 1980 | 1976 | 1964 | 1975 | 1967 | 1974 | 1964 | 1984 | 1986 | 1976 |
| Heating Degree Days (F) | 1615. | 1310. | 1073. | 588. | 265. | 49. | 10. | 23. | 165. | 499. | 978. | 1460. | 8035. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 32. | 115. | 233. | 169. | 27. | 0. | 0. | 0. | 576. |