| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 56.6 | 57.3 | 58.4 | 60.5 | 62.0 | 64.3 | 65.3 | 65.5 | 66.6 | 64.0 | 60.4 | 56.0 | 61.4 |
| Highest Mean Max. Temperature (F) | 62.0 | 62.2 | 61.8 | 64.6 | 64.7 | 68.5 | 69.9 | 70.1 | 71.8 | 67.6 | 64.5 | 59.7 | 63.2 |
| Year Highest Occurred | 1986 | 1963 | 1978 | 1987 | 1989 | 1990 | 1990 | 1990 | 1990 | 1965 | 1967 | 1986 | 1987 |
| Lowest Mean Max. Temperature (F) | 52.3 | 52.4 | 55.5 | 56.7 | 59.2 | 60.1 | 61.5 | 61.4 | 63.3 | 61.0 | 56.3 | 50.0 | 59.9 |
| Year Lowest Occurred | 1989 | 1989 | 1964 | 1967 | 1964 | 1967 | 1970 | 1970 | 1975 | 1970 | 1985 | 1990 | 1975 |
| Mean Temperature (F) | 48.7 | 49.5 | 50.3 | 51.8 | 53.7 | 56.3 | 57.3 | 57.7 | 58.1 | 55.5 | 52.3 | 48.2 | 53.3 |
| Highest Mean Temperature (F) | 53.8 | 55.4 | 54.7 | 54.4 | 56.2 | 58.8 | 59.6 | 60.7 | 61.5 | 58.3 | 56.3 | 52.2 | 55.3 |
| Year Highest Occurred | 1986 | 1963 | 1978 | 1989 | 1963 | 1961 | 1990 | 1983 | 1979 | 1987 | 1967 | 1969 | 1983 |
| Lowest Mean Temperature (F) | 44.4 | 43.8 | 47.0 | 48.4 | 51.5 | 54.1 | 55.1 | 54.9 | 55.1 | 52.1 | 47.2 | 40.1 | 51.6 |
| Year Lowest Occurred | 1989 | 1989 | 1964 | 1975 | 1965 | 1965 | 1970 | 1970 | 1989 | 1971 | 1985 | 1990 | 1975 |
| Mean Min. Temperature (F) | 40.7 | 41.5 | 42.1 | 43.1 | 45.4 | 48.3 | 49.3 | 49.9 | 49.5 | 46.8 | 44.1 | 40.4 | 45.1 |
| Highest Mean Min. Temperature (F) | 46.0 | 48.6 | 47.5 | 45.6 | 48.5 | 51.6 | 52.5 | 53.9 | 54.1 | 51.4 | 48.2 | 45.6 | 48.2 |
| Year Highest Occurred | 1978 | 1963 | 1978 | 1965 | 1969 | 1969 | 1983 | 1983 | 1983 | 1983 | 1981 | 1983 | 1983 |
| Lowest Mean Min. Temperature (F) | 36.4 | 35.1 | 38.5 | 38.9 | 43.6 | 46.0 | 45.3 | 46.6 | 45.6 | 42.4 | 36.9 | 30.2 | 42.3 |
| Year Lowest Occurred | 1989 | 1989 | 1964 | 1975 | 1985 | 1962 | 1989 | 1989 | 1989 | 1971 | 1990 | 1990 | 1990 |
| Mean Precipitation (in.) | 6.54 | 5.45 | 6.02 | 2.84 | 1.17 | 0.32 | 0.13 | 0.42 | 0.79 | 2.87 | 6.22 | 6.42 | 39.19 |
| Highest Precipitation (in.) | 13.50 | 11.83 | 20.03 | 9.43 | 9.46 | 2.44 | 0.85 | 3.00 | 3.09 | 6.96 | 13.64 | 14.58 | 74.82 |
| Year Highest Occurred | 1969 | 1986 | 1983 | 1963 | 1990 | 1988 | 1974 | 1983 | 1977 | 1989 | 1984 | 1964 | 1983 |
| Lowest Precipitation (in.) | 0.55 | 0.33 | 0.90 | 0.24 | 0.01 | 0.03 | 0.00 | 0.00 | 0.00 | 0.04 | 0.98 | 0.32 | 21.01 |
| Year Lowest Occurred | 1984 | 1988 | 1988 | 1985 | 1982 | 1979 | 1989 | 1988 | 1988 | 1978 | 1990 | 1989 | 1976 |
| Heating Degree Days (F) | 505. | 434. | 456. | 396. | 350. | 261. | 239. | 226. | 209. | 295. | 381. | 521. | 4273. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |