| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 42.0 | 48.1 | 53.5 | 60.8 | 69.5 | 78.0 | 85.7 | 85.4 | 77.0 | 62.9 | 47.8 | 41.3 | 62.7 |
| Highest Mean Max. Temperature (F) | 48.9 | 56.1 | 60.8 | 68.5 | 76.6 | 84.8 | 91.4 | 95.5 | 89.0 | 71.9 | 54.2 | 47.5 | 64.6 |
| Year Highest Occurred | 1961 | 1968 | 1978 | 1987 | 1969 | 1961 | 1972 | 1967 | 1974 | 1987 | 1976 | 1962 | 1967 |
| Lowest Mean Max. Temperature (F) | 38.2 | 41.3 | 47.4 | 51.6 | 60.7 | 70.7 | 77.3 | 78.0 | 66.6 | 55.2 | 40.5 | 35.8 | 60.0 |
| Year Lowest Occurred | 1982 | 1989 | 1971 | 1967 | 1977 | 1980 | 1983 | 1976 | 1986 | 1984 | 1985 | 1990 | 1989 |
| Mean Temperature (F) | 35.5 | 39.4 | 43.1 | 48.1 | 55.0 | 62.5 | 67.8 | 67.3 | 60.5 | 50.4 | 40.7 | 35.5 | 50.5 |
| Highest Mean Temperature (F) | 40.9 | 45.3 | 48.7 | 53.5 | 59.3 | 67.1 | 70.8 | 73.6 | 66.6 | 55.4 | 44.4 | 40.0 | 51.8 |
| Year Highest Occurred | 1978 | 1963 | 1978 | 1987 | 1973 | 1961 | 1985 | 1967 | 1967 | 1987 | 1967 | 1977 | 1987 |
| Lowest Mean Temperature (F) | 32.6 | 32.7 | 38.9 | 42.2 | 49.8 | 58.1 | 63.9 | 63.7 | 54.9 | 46.8 | 34.3 | 29.9 | 48.9 |
| Year Lowest Occurred | 1972 | 1989 | 1971 | 1967 | 1977 | 1980 | 1983 | 1976 | 1986 | 1984 | 1985 | 1990 | 1985 |
| Mean Min. Temperature (F) | 28.8 | 30.6 | 32.5 | 35.4 | 40.5 | 46.9 | 49.9 | 49.3 | 43.9 | 37.9 | 33.5 | 29.6 | 38.2 |
| Highest Mean Min. Temperature (F) | 35.3 | 35.4 | 37.4 | 40.5 | 43.9 | 50.9 | 52.7 | 53.2 | 49.7 | 43.0 | 36.9 | 34.5 | 40.1 |
| Year Highest Occurred | 1978 | 1963 | 1983 | 1990 | 1987 | 1986 | 1990 | 1990 | 1963 | 1979 | 1965 | 1977 | 1983 |
| Lowest Mean Min. Temperature (F) | 22.9 | 24.0 | 29.5 | 31.9 | 37.1 | 42.7 | 46.7 | 44.6 | 40.1 | 33.1 | 28.0 | 24.0 | 36.7 |
| Year Lowest Occurred | 1963 | 1989 | 1969 | 1975 | 1965 | 1976 | 1962 | 1980 | 1972 | 1974 | 1985 | 1990 | 1985 |
| Mean Precipitation (in.) | 6.71 | 5.24 | 5.41 | 3.58 | 2.61 | 1.51 | 0.57 | 1.16 | 1.74 | 3.57 | 7.77 | 7.47 | 47.34 |
| Highest Precipitation (in.) | 13.22 | 12.53 | 11.31 | 5.92 | 5.97 | 3.58 | 4.46 | 5.58 | 6.00 | 7.02 | 19.12 | 24.35 | 65.16 |
| Year Highest Occurred | 1970 | 1986 | 1989 | 1988 | 1977 | 1984 | 1987 | 1976 | 1986 | 1979 | 1973 | 1964 | 1964 |
| Lowest Precipitation (in.) | 0.46 | 1.65 | 0.76 | 0.97 | 0.47 | 0.14 | 0.00 | 0.00 | 0.00 | 0.10 | 1.13 | 1.06 | 33.40 |
| Year Lowest Occurred | 1985 | 1964 | 1965 | 1966 | 1982 | 1977 | 1988 | 1988 | 1974 | 1987 | 1976 | 1976 | 1985 |
| Heating Degree Days (F) | 915. | 717. | 679. | 507. | 314. | 123. | 31. | 51. | 173. | 453. | 729. | 915. | 5607. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 48. | 118. | 122. | 38. | 0. | 0. | 0. | 326. |