| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 28.1 | 27.5 | 32.8 | 37.8 | 46.1 | 52.7 | 57.3 | 58.0 | 53.5 | 42.9 | 35.6 | 30.7 | 41.9 |
| Highest Mean Max. Temperature (F) | 40.2 | 37.4 | 40.0 | 46.2 | 51.6 | 56.3 | 61.1 | 63.3 | 57.4 | 49.2 | 40.5 | 40.9 | 44.8 |
| Year Highest Occurred | 1977 | 1977 | 1987 | 1979 | 1981 | 1967 | 1972 | 1974 | 1974 | 1986 | 1985 | 1985 | 1979 |
| Lowest Mean Max. Temperature (F) | 15.6 | 16.7 | 17.7 | 30.2 | 40.9 | 47.7 | 53.9 | 53.9 | 50.5 | 38.3 | 24.9 | 22.5 | 38.7 |
| Year Lowest Occurred | 1971 | 1974 | 1972 | 1985 | 1971 | 1971 | 1985 | 1966 | 1962 | 1985 | 1963 | 1979 | 1971 |
| Mean Temperature (F) | 22.2 | 21.4 | 26.8 | 32.1 | 40.4 | 47.0 | 51.9 | 52.9 | 48.2 | 37.5 | 30.0 | 25.2 | 36.3 |
| Highest Mean Temperature (F) | 36.8 | 33.3 | 36.1 | 39.8 | 45.4 | 51.2 | 55.7 | 56.9 | 52.0 | 44.1 | 35.9 | 37.1 | 39.7 |
| Year Highest Occurred | 1977 | 1977 | 1965 | 1979 | 1961 | 1967 | 1968 | 1987 | 1986 | 1986 | 1985 | 1985 | 1987 |
| Lowest Mean Temperature (F) | 7.5 | 9.2 | 7.2 | 24.0 | 35.1 | 42.0 | 48.4 | 49.3 | 45.8 | 30.7 | 19.2 | 17.0 | 32.0 |
| Year Lowest Occurred | 1971 | 1974 | 1972 | 1985 | 1971 | 1971 | 1973 | 1964 | 1968 | 1965 | 1963 | 1979 | 1971 |
| Mean Min. Temperature (F) | 16.3 | 15.3 | 20.8 | 26.4 | 34.7 | 41.3 | 46.4 | 47.7 | 42.7 | 32.0 | 24.5 | 19.7 | 30.7 |
| Highest Mean Min. Temperature (F) | 33.3 | 29.2 | 32.7 | 33.4 | 40.3 | 46.1 | 50.9 | 52.3 | 47.3 | 39.0 | 31.3 | 33.2 | 35.2 |
| Year Highest Occurred | 1977 | 1977 | 1965 | 1979 | 1961 | 1967 | 1968 | 1987 | 1986 | 1986 | 1985 | 1985 | 1987 |
| Lowest Mean Min. Temperature (F) | -0.6 | 1.6 | -3.3 | 17.8 | 29.3 | 36.2 | 41.1 | 43.3 | 38.5 | 21.1 | 13.5 | 6.9 | 25.1 |
| Year Lowest Occurred | 1971 | 1974 | 1972 | 1985 | 1971 | 1975 | 1973 | 1975 | 1972 | 1966 | 1963 | 1964 | 1972 |
| Mean Precipitation (in.) | 0.89 | 0.78 | 1.03 | 0.95 | 1.01 | 1.18 | 1.84 | 2.25 | 2.44 | 2.43 | 1.66 | 1.49 | 17.95 |
| Highest Precipitation (in.) | 3.00 | 2.28 | 4.45 | 2.51 | 2.57 | 3.47 | 5.01 | 4.75 | 5.55 | 5.98 | 4.08 | 3.91 | 31.26 |
| Year Highest Occurred | 1980 | 1971 | 1970 | 1977 | 1978 | 1980 | 1970 | 1966 | 1962 | 1971 | 1977 | 1971 | 1970 |
| Lowest Precipitation (in.) | 0.03 | 0.03 | 0.06 | 0.05 | 0.06 | 0.01 | 0.01 | 0.03 | 0.06 | 0.08 | 0.09 | 0.07 | 1.16 |
| Year Lowest Occurred | 1968 | 1983 | 1969 | 1969 | 1961 | 1968 | 1968 | 1968 | 1968 | 1968 | 1968 | 1968 | 1968 |
| Heating Degree Days (F) | 1327. | 1221. | 1184. | 987. | 763. | 540. | 406. | 375. | 504. | 853. | 1050. | 1234. | 10444. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |