| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 46.4 | 52.4 | 56.3 | 62.3 | 69.0 | 75.9 | 82.6 | 82.5 | 76.6 | 65.5 | 52.0 | 45.7 | 63.9 |
| Highest Mean Max. Temperature (F) | 54.1 | 58.3 | 62.6 | 70.3 | 74.6 | 81.6 | 87.8 | 91.5 | 86.1 | 73.8 | 59.0 | 50.7 | 66.3 |
| Year Highest Occurred | 1961 | 1968 | 1986 | 1987 | 1969 | 1987 | 1985 | 1967 | 1974 | 1987 | 1976 | 1962 | 1987 |
| Lowest Mean Max. Temperature (F) | 40.7 | 46.0 | 51.2 | 55.0 | 62.0 | 70.0 | 75.1 | 77.3 | 69.2 | 59.2 | 44.5 | 39.4 | 61.8 |
| Year Lowest Occurred | 1969 | 1989 | 1971 | 1967 | 1962 | 1980 | 1983 | 1976 | 1985 | 1984 | 1985 | 1990 | 1964 |
| Mean Temperature (F) | 39.2 | 43.0 | 45.7 | 49.7 | 55.0 | 61.2 | 65.5 | 65.5 | 60.6 | 52.8 | 44.5 | 39.2 | 51.8 |
| Highest Mean Temperature (F) | 44.4 | 48.5 | 50.5 | 55.0 | 59.3 | 65.1 | 68.5 | 70.3 | 65.5 | 57.2 | 48.2 | 43.9 | 53.1 |
| Year Highest Occurred | 1978 | 1963 | 1986 | 1989 | 1969 | 1961 | 1985 | 1967 | 1963 | 1988 | 1976 | 1977 | 1987 |
| Lowest Mean Temperature (F) | 34.5 | 36.7 | 41.8 | 44.7 | 51.5 | 57.3 | 62.5 | 61.9 | 56.1 | 50.0 | 38.1 | 32.9 | 50.0 |
| Year Lowest Occurred | 1963 | 1989 | 1971 | 1975 | 1977 | 1976 | 1963 | 1980 | 1985 | 1984 | 1985 | 1990 | 1964 |
| Mean Min. Temperature (F) | 32.0 | 33.6 | 35.1 | 37.1 | 41.0 | 46.4 | 48.3 | 48.5 | 44.5 | 40.0 | 36.9 | 32.7 | 39.7 |
| Highest Mean Min. Temperature (F) | 37.8 | 39.4 | 39.4 | 41.1 | 43.9 | 51.4 | 51.2 | 52.0 | 50.6 | 44.4 | 40.0 | 37.8 | 41.3 |
| Year Highest Occurred | 1978 | 1961 | 1983 | 1990 | 1969 | 1969 | 1975 | 1968 | 1963 | 1979 | 1965 | 1977 | 1983 |
| Lowest Mean Min. Temperature (F) | 24.5 | 27.3 | 30.8 | 33.2 | 37.8 | 41.9 | 45.3 | 43.3 | 40.3 | 34.0 | 30.9 | 26.4 | 37.8 |
| Year Lowest Occurred | 1963 | 1989 | 1965 | 1982 | 1982 | 1976 | 1977 | 1980 | 1964 | 1974 | 1978 | 1990 | 1985 |
| Mean Precipitation (in.) | 9.24 | 7.20 | 7.12 | 4.51 | 2.96 | 1.72 | 0.62 | 1.16 | 2.34 | 4.88 | 10.78 | 10.47 | 63.00 |
| Highest Precipitation (in.) | 19.35 | 16.78 | 13.61 | 8.29 | 6.58 | 4.86 | 4.58 | 5.12 | 8.57 | 9.28 | 26.10 | 28.26 | 85.88 |
| Year Highest Occurred | 1964 | 1986 | 1961 | 1963 | 1963 | 1984 | 1987 | 1976 | 1986 | 1961 | 1973 | 1964 | 1964 |
| Lowest Precipitation (in.) | 1.08 | 1.72 | 1.83 | 1.39 | 0.24 | 0.19 | 0.00 | 0.00 | 0.03 | 0.05 | 1.61 | 1.67 | 42.05 |
| Year Lowest Occurred | 1985 | 1988 | 1965 | 1966 | 1982 | 1987 | 1988 | 1988 | 1987 | 1987 | 1976 | 1976 | 1985 |
| Heating Degree Days (F) | 800. | 616. | 598. | 459. | 310. | 135. | 48. | 55. | 157. | 378. | 615. | 800. | 4971. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 21. | 63. | 70. | 25. | 0. | 0. | 0. | 179. |