| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 31.3 | 38.3 | 47.2 | 57.2 | 66.4 | 75.3 | 84.3 | 83.9 | 72.8 | 58.5 | 40.8 | 31.7 | 57.3 |
| Highest Mean Max. Temperature (F) | 38.6 | 46.3 | 55.0 | 67.1 | 74.5 | 83.8 | 95.7 | 92.7 | 84.6 | 66.5 | 45.9 | 38.0 | 62.1 |
| Year Highest Occurred | 1981 | 1987 | 1986 | 1987 | 1987 | 1961 | 1985 | 1967 | 1967 | 1987 | 1966 | 1966 | 1987 |
| Lowest Mean Max. Temperature (F) | 19.5 | 29.1 | 40.9 | 50.4 | 60.4 | 67.3 | 74.4 | 74.4 | 62.3 | 51.1 | 32.2 | 25.4 | 53.3 |
| Year Lowest Occurred | 1969 | 1990 | 1971 | 1970 | 1978 | 1981 | 1983 | 1978 | 1977 | 1969 | 1985 | 1983 | 1978 |
| Mean Temperature (F) | 25.5 | 31.2 | 38.0 | 45.7 | 54.1 | 61.6 | 68.9 | 68.3 | 58.8 | 47.1 | 34.8 | 26.6 | 46.7 |
| Highest Mean Temperature (F) | 32.9 | 39.4 | 46.1 | 54.9 | 60.5 | 69.0 | 77.7 | 73.9 | 66.9 | 54.0 | 39.8 | 34.0 | 51.2 |
| Year Highest Occurred | 1981 | 1987 | 1986 | 1987 | 1987 | 1986 | 1985 | 1986 | 1967 | 1988 | 1966 | 1966 | 1987 |
| Lowest Mean Temperature (F) | 13.1 | 20.6 | 32.8 | 40.4 | 49.2 | 56.5 | 61.8 | 62.2 | 51.8 | 40.5 | 27.5 | 20.1 | 43.5 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1970 | 1974 | 1981 | 1983 | 1968 | 1972 | 1969 | 1985 | 1990 | 1969 |
| Mean Min. Temperature (F) | 19.7 | 24.1 | 28.9 | 34.2 | 41.6 | 47.9 | 53.5 | 52.6 | 44.7 | 35.7 | 28.8 | 21.4 | 36.1 |
| Highest Mean Min. Temperature (F) | 27.2 | 32.4 | 37.4 | 42.6 | 46.5 | 54.3 | 65.0 | 59.9 | 51.5 | 43.1 | 33.7 | 30.0 | 40.2 |
| Year Highest Occurred | 1981 | 1987 | 1984 | 1987 | 1987 | 1986 | 1963 | 1981 | 1988 | 1988 | 1966 | 1966 | 1987 |
| Lowest Mean Min. Temperature (F) | 6.3 | 12.0 | 21.4 | 28.7 | 37.6 | 41.8 | 46.0 | 45.1 | 38.0 | 29.9 | 20.8 | 14.1 | 32.6 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1990 | 1974 | 1990 | 1962 | 1969 | 1972 | 1969 | 1961 | 1990 | 1969 |
| Mean Precipitation (in.) | 1.90 | 1.67 | 1.68 | 1.45 | 1.61 | 1.23 | 0.82 | 0.79 | 0.87 | 1.11 | 2.60 | 2.80 | 18.53 |
| Highest Precipitation (in.) | 4.18 | 4.81 | 4.43 | 3.53 | 3.75 | 3.53 | 2.59 | 3.55 | 2.77 | 2.48 | 6.19 | 7.46 | 25.05 |
| Year Highest Occurred | 1969 | 1979 | 1983 | 1978 | 1980 | 1984 | 1983 | 1976 | 1986 | 1968 | 1983 | 1973 | 1980 |
| Lowest Precipitation (in.) | 0.00 | 0.20 | 0.19 | 0.00 | 0.47 | 0.10 | 0.00 | 0.00 | 0.00 | 0.00 | 0.39 | 0.57 | 11.32 |
| Year Lowest Occurred | 1963 | 1988 | 1965 | 1985 | 1987 | 1986 | 1988 | 1988 | 1990 | 1988 | 1990 | 1976 | 1985 |
| Heating Degree Days (F) | 1225. | 946. | 837. | 579. | 343. | 155. | 49. | 74. | 242. | 555. | 906. | 1190. | 7101. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 5. | 53. | 170. | 176. | 56. | 0. | 0. | 0. | 460. |