| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 55.2 | 56.2 | 56.3 | 57.9 | 60.8 | 63.6 | 65.6 | 66.2 | 66.8 | 63.8 | 58.3 | 55.3 | 60.5 |
| Highest Mean Max. Temperature (F) | 62.1 | 62.3 | 60.6 | 63.7 | 63.1 | 66.1 | 67.7 | 69.5 | 71.5 | 67.9 | 62.9 | 59.7 | 62.3 |
| Year Highest Occurred | 1981 | 1970 | 1986 | 1989 | 1987 | 1981 | 1985 | 1983 | 1979 | 1974 | 1967 | 1980 | 1983 |
| Lowest Mean Max. Temperature (F) | 49.5 | 50.0 | 52.9 | 53.3 | 57.5 | 61.0 | 62.5 | 63.2 | 62.6 | 60.7 | 52.0 | 49.9 | 58.1 |
| Year Lowest Occurred | 1969 | 1989 | 1976 | 1971 | 1971 | 1971 | 1987 | 1980 | 1975 | 1988 | 1985 | 1990 | 1971 |
| Mean Temperature (F) | 47.6 | 48.9 | 49.0 | 50.3 | 53.2 | 56.4 | 58.2 | 59.0 | 58.5 | 55.4 | 51.1 | 47.9 | 53.0 |
| Highest Mean Temperature (F) | 53.5 | 53.8 | 53.4 | 55.4 | 56.1 | 58.9 | 60.6 | 62.3 | 63.3 | 58.4 | 54.2 | 51.5 | 55.2 |
| Year Highest Occurred | 1981 | 1980 | 1983 | 1989 | 1987 | 1969 | 1983 | 1983 | 1979 | 1987 | 1967 | 1979 | 1983 |
| Lowest Mean Temperature (F) | 43.7 | 42.9 | 45.5 | 46.7 | 51.3 | 53.6 | 55.4 | 55.9 | 55.5 | 52.6 | 45.4 | 42.4 | 51.2 |
| Year Lowest Occurred | 1972 | 1989 | 1985 | 1975 | 1965 | 1962 | 1962 | 1980 | 1987 | 1971 | 1985 | 1990 | 1971 |
| Mean Min. Temperature (F) | 40.0 | 41.5 | 41.7 | 42.6 | 45.6 | 49.1 | 50.8 | 51.8 | 50.1 | 47.0 | 44.0 | 40.4 | 45.4 |
| Highest Mean Min. Temperature (F) | 45.9 | 46.9 | 47.5 | 47.0 | 49.0 | 52.2 | 53.6 | 55.0 | 55.2 | 50.8 | 47.2 | 45.4 | 48.1 |
| Year Highest Occurred | 1970 | 1983 | 1983 | 1989 | 1987 | 1969 | 1983 | 1983 | 1990 | 1979 | 1987 | 1981 | 1983 |
| Lowest Mean Min. Temperature (F) | 34.7 | 35.7 | 37.8 | 38.3 | 42.9 | 44.4 | 47.7 | 48.5 | 47.5 | 43.2 | 38.2 | 34.8 | 43.7 |
| Year Lowest Occurred | 1963 | 1989 | 1985 | 1975 | 1962 | 1962 | 1962 | 1980 | 1965 | 1974 | 1978 | 1990 | 1985 |
| Mean Precipitation (in.) | 9.88 | 8.36 | 8.93 | 4.60 | 2.94 | 1.33 | 0.39 | 0.96 | 1.75 | 4.85 | 10.61 | 10.61 | 65.21 |
| Highest Precipitation (in.) | 20.90 | 20.18 | 17.75 | 13.60 | 8.81 | 4.62 | 2.20 | 5.30 | 8.94 | 12.56 | 31.25 | 23.47 | 104.66 |
| Year Highest Occurred | 1970 | 1986 | 1961 | 1963 | 1963 | 1985 | 1983 | 1968 | 1977 | 1975 | 1973 | 1983 | 1983 |
| Lowest Precipitation (in.) | 0.52 | 0.62 | 1.11 | 0.76 | 0.13 | 0.09 | 0.00 | 0.00 | 0.00 | 0.09 | 2.69 | 0.96 | 33.21 |
| Year Lowest Occurred | 1985 | 1988 | 1965 | 1968 | 1982 | 1987 | 1984 | 1988 | 1987 | 1987 | 1976 | 1976 | 1976 |
| Heating Degree Days (F) | 539. | 451. | 496. | 441. | 366. | 258. | 211. | 190. | 200. | 298. | 417. | 530. | 4397. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 5. | 0. | 0. | 0. | 5. |