| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 31.9 | 38.2 | 44.5 | 53.6 | 63.6 | 73.4 | 83.1 | 82.6 | 71.0 | 57.9 | 40.1 | 31.3 | 55.9 |
| Highest Mean Max. Temperature (F) | 39.4 | 43.0 | 52.3 | 63.9 | 71.2 | 82.0 | 91.4 | 90.3 | 82.4 | 69.8 | 47.5 | 36.1 | 59.9 |
| Year Highest Occurred | 1981 | 1963 | 1981 | 1987 | 1987 | 1961 | 1985 | 1971 | 1967 | 1987 | 1987 | 1962 | 1987 |
| Lowest Mean Max. Temperature (F) | 23.6 | 33.0 | 36.8 | 45.1 | 55.6 | 65.4 | 76.2 | 74.1 | 60.6 | 51.7 | 30.8 | 23.3 | 52.6 |
| Year Lowest Occurred | 1979 | 1989 | 1964 | 1975 | 1975 | 1981 | 1983 | 1975 | 1965 | 1985 | 1985 | 1990 | 1975 |
| Mean Temperature (F) | 23.5 | 28.2 | 33.3 | 40.7 | 48.8 | 57.5 | 63.8 | 62.9 | 53.6 | 43.6 | 31.8 | 23.8 | 42.6 |
| Highest Mean Temperature (F) | 31.2 | 32.9 | 39.4 | 46.7 | 54.1 | 63.3 | 68.6 | 67.9 | 60.2 | 50.4 | 36.5 | 28.8 | 44.5 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1987 | 1987 | 1986 | 1985 | 1961 | 1990 | 1988 | 1965 | 1966 | 1988 |
| Lowest Mean Temperature (F) | 12.4 | 19.9 | 26.7 | 34.9 | 43.1 | 52.9 | 58.9 | 58.1 | 47.2 | 39.4 | 22.8 | 14.1 | 40.6 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1975 | 1975 | 1975 | 1986 | 1980 | 1965 | 1985 | 1985 | 1990 | 1975 |
| Mean Min. Temperature (F) | 15.0 | 18.1 | 22.1 | 27.8 | 33.9 | 41.5 | 44.4 | 43.2 | 36.1 | 29.2 | 23.4 | 16.2 | 29.2 |
| Highest Mean Min. Temperature (F) | 24.0 | 24.4 | 27.8 | 31.2 | 37.0 | 45.3 | 49.8 | 47.2 | 41.1 | 33.9 | 28.2 | 23.5 | 30.9 |
| Year Highest Occurred | 1967 | 1961 | 1984 | 1981 | 1987 | 1988 | 1975 | 1983 | 1966 | 1963 | 1965 | 1973 | 1981 |
| Lowest Mean Min. Temperature (F) | 1.2 | 6.8 | 12.7 | 22.7 | 30.5 | 38.3 | 40.9 | 38.4 | 31.6 | 24.1 | 14.7 | 4.9 | 26.5 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1982 | 1975 | 1975 | 1986 | 1980 | 1971 | 1987 | 1985 | 1990 | 1985 |
| Mean Precipitation (in.) | 5.80 | 3.74 | 3.12 | 2.44 | 2.77 | 2.83 | 1.24 | 1.75 | 2.34 | 2.85 | 4.37 | 5.01 | 38.26 |
| Highest Precipitation (in.) | 11.52 | 9.95 | 7.03 | 4.79 | 5.93 | 7.48 | 3.90 | 4.35 | 5.94 | 7.91 | 8.41 | 12.65 | 52.44 |
| Year Highest Occurred | 1971 | 1972 | 1972 | 1982 | 1984 | 1981 | 1983 | 1964 | 1985 | 1967 | 1973 | 1964 | 1964 |
| Lowest Precipitation (in.) | 0.90 | 0.77 | 0.65 | 0.39 | 1.38 | 0.44 | 0.05 | 0.05 | 0.13 | 0.02 | 0.79 | 0.84 | 16.38 |
| Year Lowest Occurred | 1981 | 1962 | 1969 | 1977 | 1979 | 1961 | 1967 | 1969 | 1979 | 1987 | 1979 | 1986 | 1961 |
| Heating Degree Days (F) | 1287. | 1030. | 983. | 729. | 502. | 237. | 94. | 126. | 355. | 663. | 996. | 1277. | 8279. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 12. | 57. | 61. | 13. | 0. | 0. | 0. | 143. |