| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 46.2 | 51.3 | 54.7 | 59.1 | 65.0 | 71.8 | 78.8 | 79.7 | 74.3 | 64.1 | 52.1 | 46.2 | 61.9 |
| Highest Mean Max. Temperature (F) | 51.9 | 58.3 | 60.1 | 66.0 | 69.3 | 76.9 | 85.0 | 87.8 | 82.8 | 71.4 | 55.4 | 50.8 | 63.6 |
| Year Highest Occurred | 1961 | 1963 | 1986 | 1987 | 1973 | 1961 | 1985 | 1967 | 1974 | 1987 | 1980 | 1979 | 1967 |
| Lowest Mean Max. Temperature (F) | 39.4 | 40.9 | 49.7 | 53.1 | 60.0 | 66.7 | 71.5 | 71.4 | 68.1 | 59.6 | 43.9 | 39.9 | 58.4 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1962 | 1980 | 1989 | 1989 | 1985 | 1984 | 1985 | 1990 | 1989 |
| Mean Temperature (F) | 39.1 | 42.5 | 45.0 | 48.4 | 53.7 | 59.9 | 64.7 | 65.3 | 60.5 | 52.7 | 44.4 | 39.5 | 51.3 |
| Highest Mean Temperature (F) | 42.9 | 48.6 | 49.5 | 52.5 | 57.4 | 63.4 | 68.1 | 70.2 | 65.0 | 56.9 | 47.3 | 43.7 | 52.6 |
| Year Highest Occurred | 1978 | 1963 | 1978 | 1990 | 1969 | 1961 | 1985 | 1977 | 1974 | 1979 | 1980 | 1973 | 1981 |
| Lowest Mean Temperature (F) | 32.2 | 31.6 | 41.3 | 43.9 | 50.9 | 56.5 | 59.3 | 59.4 | 56.4 | 48.6 | 37.1 | 32.4 | 48.0 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1989 | 1976 | 1989 | 1989 | 1985 | 1971 | 1985 | 1990 | 1989 |
| Mean Min. Temperature (F) | 31.9 | 33.6 | 35.3 | 37.7 | 42.3 | 47.9 | 50.5 | 50.8 | 46.6 | 41.3 | 36.7 | 32.7 | 40.6 |
| Highest Mean Min. Temperature (F) | 37.5 | 38.8 | 39.5 | 41.6 | 45.7 | 52.6 | 53.1 | 55.0 | 51.6 | 46.5 | 40.3 | 37.8 | 42.1 |
| Year Highest Occurred | 1978 | 1963 | 1983 | 1990 | 1969 | 1969 | 1990 | 1977 | 1979 | 1979 | 1976 | 1977 | 1981 |
| Lowest Mean Min. Temperature (F) | 24.5 | 22.3 | 31.8 | 34.4 | 39.5 | 44.9 | 47.1 | 46.2 | 42.0 | 36.6 | 30.2 | 24.8 | 37.5 |
| Year Lowest Occurred | 1963 | 1989 | 1969 | 1982 | 1964 | 1976 | 1989 | 1988 | 1965 | 1974 | 1985 | 1990 | 1989 |
| Mean Precipitation (in.) | 6.77 | 5.36 | 5.46 | 3.77 | 2.71 | 1.53 | 0.57 | 1.09 | 1.80 | 3.77 | 7.79 | 7.51 | 48.13 |
| Highest Precipitation (in.) | 14.01 | 15.23 | 9.47 | 7.28 | 5.34 | 3.43 | 3.80 | 6.55 | 5.03 | 6.66 | 18.69 | 18.25 | 62.06 |
| Year Highest Occurred | 1964 | 1961 | 1961 | 1963 | 1963 | 1969 | 1987 | 1968 | 1986 | 1990 | 1973 | 1964 | 1961 |
| Lowest Precipitation (in.) | 0.73 | 1.22 | 1.13 | 1.30 | 0.71 | 0.35 | 0.00 | 0.00 | 0.07 | 0.08 | 1.87 | 1.39 | 34.08 |
| Year Lowest Occurred | 1985 | 1988 | 1965 | 1966 | 1982 | 1987 | 1967 | 1986 | 1975 | 1987 | 1976 | 1976 | 1985 |
| Heating Degree Days (F) | 803. | 630. | 620. | 498. | 350. | 164. | 73. | 76. | 160. | 381. | 618. | 791. | 5164. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 11. | 64. | 85. | 25. | 0. | 0. | 0. | 185. |