| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 51.3 | 57.2 | 62.7 | 69.5 | 76.9 | 85.2 | 92.5 | 92.3 | 86.8 | 73.7 | 57.1 | 50.6 | 71.3 |
| Highest Mean Max. Temperature (F) | 55.5 | 66.7 | 69.9 | 78.5 | 82.8 | 90.3 | 97.6 | 100.8 | 95.7 | 83.2 | 63.6 | 54.9 | 74.3 |
| Year Highest Occurred | 1985 | 1988 | 1988 | 1987 | 1982 | 1987 | 1962 | 1967 | 1974 | 1988 | 1976 | 1989 | 1988 |
| Lowest Mean Max. Temperature (F) | 44.7 | 51.2 | 57.0 | 55.7 | 68.4 | 78.1 | 84.1 | 82.3 | 76.5 | 67.6 | 51.5 | 43.9 | 68.8 |
| Year Lowest Occurred | 1969 | 1969 | 1961 | 1967 | 1977 | 1980 | 1983 | 1976 | 1987 | 1962 | 1964 | 1972 | 1983 |
| Mean Temperature (F) | 42.9 | 47.3 | 50.8 | 55.0 | 60.9 | 67.6 | 72.9 | 72.8 | 67.7 | 59.0 | 48.7 | 42.9 | 57.4 |
| Highest Mean Temperature (F) | 48.8 | 53.3 | 56.9 | 60.7 | 65.0 | 71.3 | 76.0 | 78.2 | 72.3 | 64.9 | 53.7 | 47.9 | 59.4 |
| Year Highest Occurred | 1978 | 1963 | 1986 | 1989 | 1969 | 1985 | 1970 | 1967 | 1974 | 1988 | 1976 | 1977 | 1986 |
| Lowest Mean Temperature (F) | 39.0 | 41.1 | 46.9 | 45.8 | 56.0 | 63.3 | 68.6 | 69.0 | 61.0 | 54.7 | 44.4 | 34.8 | 55.2 |
| Year Lowest Occurred | 1963 | 1990 | 1964 | 1967 | 1977 | 1966 | 1983 | 1976 | 1987 | 1969 | 1964 | 1990 | 1990 |
| Mean Min. Temperature (F) | 34.4 | 37.3 | 38.8 | 40.4 | 44.8 | 50.0 | 53.3 | 53.2 | 48.6 | 44.2 | 40.3 | 35.1 | 43.4 |
| Highest Mean Min. Temperature (F) | 42.0 | 45.3 | 45.1 | 44.8 | 48.8 | 54.0 | 55.2 | 56.6 | 52.7 | 50.3 | 44.2 | 41.9 | 45.7 |
| Year Highest Occurred | 1978 | 1963 | 1978 | 1989 | 1987 | 1982 | 1984 | 1977 | 1979 | 1979 | 1981 | 1973 | 1981 |
| Lowest Mean Min. Temperature (F) | 27.6 | 29.1 | 34.1 | 35.3 | 39.6 | 43.4 | 49.7 | 49.9 | 43.9 | 37.8 | 32.1 | 23.3 | 39.0 |
| Year Lowest Occurred | 1963 | 1990 | 1969 | 1964 | 1965 | 1966 | 1963 | 1969 | 1964 | 1990 | 1990 | 1990 | 1990 |
| Mean Precipitation (in.) | 8.83 | 7.12 | 7.04 | 2.97 | 1.88 | 0.57 | 0.15 | 0.68 | 1.24 | 3.98 | 9.04 | 9.77 | 53.27 |
| Highest Precipitation (in.) | 22.48 | 21.09 | 16.75 | 9.78 | 9.25 | 2.54 | 1.34 | 5.31 | 7.06 | 11.55 | 22.20 | 28.94 | 86.67 |
| Year Highest Occurred | 1970 | 1986 | 1975 | 1963 | 1990 | 1988 | 1983 | 1983 | 1986 | 1962 | 1973 | 1964 | 1983 |
| Lowest Precipitation (in.) | 0.89 | 0.20 | 1.32 | 0.18 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.09 | 0.37 | 25.88 |
| Year Lowest Occurred | 1985 | 1988 | 1965 | 1985 | 1982 | 1979 | 1988 | 1987 | 1988 | 1978 | 1989 | 1976 | 1976 |
| Heating Degree Days (F) | 685. | 496. | 440. | 314. | 154. | 38. | 0. | 6. | 44. | 198. | 489. | 685. | 3549. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 14. | 27. | 116. | 249. | 248. | 125. | 12. | 0. | 0. | 791. |