| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 40.4 | 43.6 | 46.3 | 53.4 | 62.8 | 72.6 | 80.9 | 79.9 | 72.8 | 62.9 | 48.4 | 40.5 | 58.7 |
| Highest Mean Max. Temperature (F) | 48.7 | 51.4 | 54.2 | 63.2 | 69.4 | 79.1 | 84.7 | 87.1 | 80.4 | 72.6 | 58.7 | 50.2 | 61.5 |
| Year Highest Occurred | 1961 | 1963 | 1972 | 1987 | 1969 | 1961 | 1972 | 1981 | 1974 | 1988 | 1976 | 1976 | 1981 |
| Lowest Mean Max. Temperature (F) | 35.8 | 37.1 | 41.4 | 40.2 | 51.4 | 66.7 | 75.7 | 70.1 | 61.5 | 53.8 | 41.9 | 33.3 | 56.0 |
| Year Lowest Occurred | 1979 | 1969 | 1975 | 1967 | 1977 | 1980 | 1987 | 1966 | 1966 | 1984 | 1983 | 1967 | 1971 |
| Mean Temperature (F) | 26.6 | 29.3 | 33.1 | 39.1 | 46.8 | 54.8 | 60.8 | 59.8 | 53.4 | 45.1 | 35.1 | 27.8 | 42.6 |
| Highest Mean Temperature (F) | 34.8 | 39.0 | 38.8 | 45.9 | 51.6 | 60.0 | 64.4 | 64.0 | 58.3 | 51.1 | 40.7 | 34.4 | 45.2 |
| Year Highest Occurred | 1986 | 1963 | 1978 | 1987 | 1966 | 1977 | 1984 | 1981 | 1981 | 1988 | 1976 | 1981 | 1981 |
| Lowest Mean Temperature (F) | 21.8 | 22.3 | 27.3 | 30.1 | 40.3 | 49.9 | 56.2 | 54.9 | 48.8 | 39.8 | 30.2 | 20.8 | 40.2 |
| Year Lowest Occurred | 1982 | 1969 | 1962 | 1975 | 1977 | 1980 | 1983 | 1976 | 1966 | 1969 | 1985 | 1967 | 1971 |
| Mean Min. Temperature (F) | 12.8 | 15.0 | 19.8 | 24.7 | 30.6 | 36.8 | 40.6 | 39.7 | 33.9 | 27.4 | 21.7 | 15.1 | 26.5 |
| Highest Mean Min. Temperature (F) | 22.5 | 26.6 | 27.0 | 29.8 | 34.5 | 41.8 | 45.8 | 44.4 | 39.4 | 32.4 | 26.4 | 25.2 | 28.9 |
| Year Highest Occurred | 1986 | 1963 | 1978 | 1990 | 1987 | 1977 | 1984 | 1961 | 1963 | 1983 | 1981 | 1981 | 1986 |
| Lowest Mean Min. Temperature (F) | 6.1 | 6.3 | 11.7 | 16.9 | 25.9 | 32.9 | 34.6 | 30.2 | 23.3 | 17.2 | 16.6 | 5.9 | 21.5 |
| Year Lowest Occurred | 1989 | 1964 | 1962 | 1975 | 1974 | 1974 | 1974 | 1974 | 1974 | 1974 | 1978 | 1990 | 1974 |
| Mean Precipitation (in.) | 6.79 | 5.86 | 5.51 | 2.73 | 1.26 | 0.96 | 0.45 | 0.65 | 0.95 | 2.37 | 5.76 | 6.19 | 39.48 |
| Highest Precipitation (in.) | 17.13 | 16.41 | 15.03 | 9.88 | 3.35 | 2.99 | 3.93 | 3.58 | 4.93 | 12.12 | 16.65 | 26.18 | 73.51 |
| Year Highest Occurred | 1969 | 1986 | 1967 | 1963 | 1977 | 1968 | 1974 | 1965 | 1982 | 1962 | 1981 | 1964 | 1982 |
| Lowest Precipitation (in.) | 0.46 | 0.02 | 0.46 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.55 | 0.00 | 18.47 |
| Year Lowest Occurred | 1984 | 1988 | 1988 | 1985 | 1985 | 1974 | 1989 | 1987 | 1987 | 1988 | 1986 | 1989 | 1976 |
| Heating Degree Days (F) | 1190. | 1000. | 989. | 777. | 564. | 312. | 150. | 184. | 352. | 617. | 897. | 1153. | 8185. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 6. | 19. | 23. | 0. | 0. | 0. | 0. | 48. |