| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 46.9 | 50.2 | 59.8 | 69.1 | 76.7 | 84.7 | 88.6 | 87.3 | 81.2 | 70.7 | 61.0 | 50.8 | 68.9 |
| Highest Mean Max. Temperature (F) | 61.6 | 62.2 | 69.9 | 76.8 | 84.6 | 90.9 | 93.2 | 93.3 | 90.1 | 76.5 | 68.9 | 57.9 | 72.9 |
| Year Highest Occurred | 1974 | 1976 | 1976 | 1977 | 1970 | 1968 | 1977 | 1968 | 1970 | 1975 | 1975 | 1978 | 1990 |
| Lowest Mean Max. Temperature (F) | 37.5 | 42.1 | 52.9 | 61.2 | 70.4 | 77.9 | 82.0 | 82.5 | 74.9 | 64.7 | 54.8 | 37.2 | 66.2 |
| Year Lowest Occurred | 1982 | 1978 | 1980 | 1987 | 1972 | 1985 | 1985 | 1981 | 1984 | 1988 | 1984 | 1989 | 1984 |
| Mean Temperature (F) | 35.3 | 37.7 | 46.8 | 55.6 | 64.7 | 73.1 | 77.3 | 75.9 | 69.4 | 57.9 | 48.4 | 39.2 | 56.8 |
| Highest Mean Temperature (F) | 48.2 | 47.3 | 53.8 | 60.2 | 70.4 | 76.4 | 81.0 | 80.3 | 75.4 | 63.4 | 54.2 | 46.7 | 60.7 |
| Year Highest Occurred | 1974 | 1976 | 1976 | 1977 | 1965 | 1981 | 1986 | 1968 | 1970 | 1984 | 1985 | 1971 | 1990 |
| Lowest Mean Temperature (F) | 27.5 | 30.2 | 40.6 | 50.8 | 59.2 | 68.9 | 74.1 | 72.2 | 64.5 | 51.2 | 41.8 | 27.4 | 55.1 |
| Year Lowest Occurred | 1977 | 1978 | 1980 | 1987 | 1972 | 1972 | 1971 | 1981 | 1984 | 1988 | 1976 | 1989 | 1988 |
| Mean Min. Temperature (F) | 23.7 | 25.2 | 33.8 | 42.0 | 52.6 | 61.4 | 66.0 | 64.6 | 57.7 | 45.2 | 35.7 | 27.5 | 44.6 |
| Highest Mean Min. Temperature (F) | 34.8 | 33.4 | 40.0 | 45.1 | 58.2 | 65.8 | 69.1 | 68.2 | 61.7 | 53.8 | 44.9 | 35.5 | 48.4 |
| Year Highest Occurred | 1974 | 1990 | 1990 | 1974 | 1965 | 1981 | 1986 | 1988 | 1977 | 1971 | 1985 | 1971 | 1990 |
| Lowest Mean Min. Temperature (F) | 16.5 | 18.2 | 28.2 | 36.2 | 47.9 | 54.6 | 63.1 | 61.4 | 52.8 | 37.3 | 27.7 | 17.5 | 42.5 |
| Year Lowest Occurred | 1977 | 1978 | 1980 | 1971 | 1972 | 1972 | 1971 | 1972 | 1967 | 1987 | 1976 | 1989 | 1976 |
| Mean Precipitation (in.) | 3.56 | 3.20 | 3.67 | 3.25 | 4.02 | 3.66 | 3.99 | 3.76 | 3.50 | 3.85 | 3.40 | 3.40 | 43.26 |
| Highest Precipitation (in.) | 10.72 | 6.50 | 12.46 | 9.92 | 10.53 | 9.15 | 9.19 | 10.84 | 11.80 | 11.55 | 11.02 | 8.17 | 60.12 |
| Year Highest Occurred | 1978 | 1971 | 1984 | 1983 | 1982 | 1962 | 1981 | 1986 | 1979 | 1971 | 1985 | 1983 | 1984 |
| Lowest Precipitation (in.) | 0.28 | 0.55 | 0.97 | 0.74 | 0.95 | 0.55 | 1.17 | 0.18 | 0.16 | 0.40 | 0.37 | 0.26 | 28.34 |
| Year Lowest Occurred | 1981 | 1978 | 1985 | 1986 | 1965 | 1970 | 1970 | 1968 | 1990 | 1963 | 1965 | 1965 | 1970 |
| Heating Degree Days (F) | 921. | 764. | 564. | 289. | 97. | 0. | 0. | 0. | 32. | 247. | 498. | 800. | 4212. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 7. | 87. | 247. | 381. | 338. | 164. | 27. | 0. | 0. | 1251. |