| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 46.2 | 50.0 | 52.9 | 56.2 | 60.8 | 64.9 | 68.3 | 69.3 | 68.7 | 61.2 | 51.9 | 46.3 | 58.1 |
| Highest Mean Max. Temperature (F) | 52.1 | 57.2 | 58.5 | 61.0 | 64.9 | 70.3 | 73.0 | 73.3 | 74.8 | 67.2 | 55.8 | 49.9 | 59.9 |
| Year Highest Occurred | 1961 | 1963 | 1965 | 1989 | 1963 | 1961 | 1961 | 1961 | 1974 | 1987 | 1962 | 1979 | 1961 |
| Lowest Mean Max. Temperature (F) | 37.8 | 43.1 | 48.2 | 51.6 | 56.3 | 60.9 | 64.5 | 64.7 | 64.7 | 56.9 | 43.8 | 41.5 | 56.2 |
| Year Lowest Occurred | 1969 | 1989 | 1971 | 1972 | 1974 | 1971 | 1986 | 1973 | 1986 | 1975 | 1985 | 1990 | 1971 |
| Mean Temperature (F) | 40.5 | 43.1 | 45.0 | 48.1 | 52.8 | 57.2 | 60.3 | 61.2 | 59.2 | 52.6 | 45.6 | 40.9 | 50.5 |
| Highest Mean Temperature (F) | 45.5 | 49.2 | 49.1 | 51.8 | 55.4 | 60.3 | 63.4 | 63.6 | 63.1 | 55.9 | 48.9 | 45.0 | 52.1 |
| Year Highest Occurred | 1961 | 1963 | 1986 | 1989 | 1983 | 1961 | 1961 | 1961 | 1963 | 1988 | 1987 | 1980 | 1987 |
| Lowest Mean Temperature (F) | 33.3 | 36.0 | 40.8 | 43.8 | 49.5 | 53.9 | 58.3 | 57.3 | 55.7 | 49.1 | 37.8 | 36.0 | 48.7 |
| Year Lowest Occurred | 1969 | 1989 | 1971 | 1975 | 1974 | 1971 | 1986 | 1973 | 1972 | 1984 | 1985 | 1990 | 1985 |
| Mean Min. Temperature (F) | 34.8 | 36.1 | 37.1 | 40.0 | 44.7 | 49.5 | 52.3 | 53.0 | 49.7 | 44.0 | 39.2 | 35.4 | 43.0 |
| Highest Mean Min. Temperature (F) | 38.9 | 41.1 | 41.8 | 44.8 | 47.3 | 54.0 | 54.8 | 55.8 | 53.8 | 49.2 | 43.3 | 40.8 | 44.6 |
| Year Highest Occurred | 1986 | 1963 | 1986 | 1990 | 1987 | 1969 | 1990 | 1990 | 1990 | 1988 | 1987 | 1980 | 1990 |
| Lowest Mean Min. Temperature (F) | 28.7 | 28.8 | 32.6 | 35.6 | 41.7 | 46.7 | 50.3 | 49.9 | 46.2 | 40.3 | 31.8 | 30.3 | 40.4 |
| Year Lowest Occurred | 1969 | 1989 | 1985 | 1975 | 1964 | 1976 | 1971 | 1973 | 1972 | 1972 | 1985 | 1984 | 1985 |
| Mean Precipitation (in.) | 12.38 | 10.10 | 9.04 | 5.80 | 3.73 | 2.50 | 1.38 | 1.79 | 3.62 | 7.19 | 12.23 | 12.96 | 82.72 |
| Highest Precipitation (in.) | 19.99 | 20.60 | 15.19 | 12.23 | 7.77 | 5.94 | 5.07 | 5.15 | 11.96 | 17.84 | 24.02 | 20.77 | 105.03 |
| Year Highest Occurred | 1964 | 1961 | 1974 | 1981 | 1984 | 1968 | 1983 | 1975 | 1978 | 1975 | 1990 | 1966 | 1990 |
| Lowest Precipitation (in.) | 0.58 | 3.81 | 1.60 | 2.18 | 0.55 | 0.64 | 0.12 | 0.07 | 0.01 | 0.52 | 3.33 | 3.21 | 58.02 |
| Year Lowest Occurred | 1985 | 1973 | 1965 | 1977 | 1982 | 1987 | 1984 | 1986 | 1990 | 1987 | 1976 | 1985 | 1985 |
| Heating Degree Days (F) | 760. | 613. | 620. | 507. | 378. | 234. | 150. | 126. | 184. | 384. | 582. | 747. | 5285. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 8. | 10. | 0. | 0. | 0. | 18. |