| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 27.4 | 34.1 | 44.7 | 59.0 | 71.0 | 80.7 | 88.2 | 87.5 | 75.0 | 62.6 | 43.7 | 30.4 | 58.7 |
| Highest Mean Max. Temperature (F) | 40.1 | 47.6 | 57.1 | 70.4 | 79.9 | 95.6 | 93.3 | 95.7 | 84.2 | 72.6 | 51.9 | 45.9 | 63.2 |
| Year Highest Occurred | 1981 | 1984 | 1986 | 1987 | 1977 | 1988 | 1988 | 1983 | 1976 | 1963 | 1987 | 1979 | 1988 |
| Lowest Mean Max. Temperature (F) | 11.4 | 20.0 | 26.3 | 46.8 | 64.9 | 74.5 | 80.6 | 79.7 | 60.6 | 52.8 | 26.9 | 12.6 | 54.9 |
| Year Lowest Occurred | 1969 | 1989 | 1965 | 1975 | 1982 | 1968 | 1962 | 1987 | 1965 | 1969 | 1985 | 1983 | 1978 |
| Mean Temperature (F) | 14.8 | 21.4 | 31.5 | 44.4 | 55.9 | 65.5 | 71.8 | 70.1 | 58.2 | 46.8 | 30.8 | 18.2 | 44.1 |
| Highest Mean Temperature (F) | 28.2 | 33.9 | 42.9 | 52.7 | 63.7 | 78.6 | 76.9 | 78.1 | 65.0 | 53.2 | 38.1 | 29.4 | 48.8 |
| Year Highest Occurred | 1983 | 1984 | 1986 | 1987 | 1977 | 1988 | 1989 | 1983 | 1990 | 1963 | 1987 | 1979 | 1987 |
| Lowest Mean Temperature (F) | 0.3 | 8.2 | 15.5 | 36.9 | 50.8 | 60.0 | 66.1 | 64.1 | 47.3 | 40.9 | 16.9 | 1.8 | 41.4 |
| Year Lowest Occurred | 1969 | 1979 | 1965 | 1961 | 1967 | 1969 | 1972 | 1977 | 1965 | 1969 | 1985 | 1983 | 1978 |
| Mean Min. Temperature (F) | 2.1 | 8.7 | 18.3 | 29.7 | 40.9 | 50.3 | 55.3 | 52.8 | 41.4 | 31.0 | 17.8 | 5.9 | 29.5 |
| Highest Mean Min. Temperature (F) | 18.6 | 21.1 | 28.7 | 35.0 | 47.4 | 61.6 | 60.9 | 60.5 | 46.2 | 33.9 | 25.1 | 16.9 | 34.6 |
| Year Highest Occurred | 1983 | 1987 | 1986 | 1987 | 1977 | 1988 | 1989 | 1983 | 1966 | 1979 | 1980 | 1986 | 1987 |
| Lowest Mean Min. Temperature (F) | -13.2 | -6.2 | 4.7 | 21.2 | 34.7 | 45.3 | 49.8 | 46.3 | 33.4 | 24.3 | 6.8 | -9.1 | 25.9 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1961 | 1968 | 1969 | 1968 | 1974 | 1961 | 1961 | 1985 | 1983 | 1961 |
| Mean Precipitation (in.) | 0.42 | 0.32 | 0.65 | 1.46 | 2.47 | 3.19 | 2.06 | 1.44 | 1.48 | 0.91 | 0.45 | 0.42 | 15.27 |
| Highest Precipitation (in.) | 1.09 | 0.73 | 2.09 | 3.90 | 6.84 | 8.51 | 7.54 | 4.39 | 6.05 | 4.48 | 1.18 | 1.38 | 22.96 |
| Year Highest Occurred | 1971 | 1973 | 1982 | 1967 | 1974 | 1971 | 1987 | 1968 | 1986 | 1982 | 1978 | 1972 | 1971 |
| Lowest Precipitation (in.) | 0.00 | 0.01 | 0.03 | 0.00 | 0.10 | 0.40 | 0.39 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 9.25 |
| Year Lowest Occurred | 1961 | 1985 | 1981 | 1988 | 1984 | 1985 | 1989 | 1970 | 1969 | 1965 | 1969 | 1987 | 1988 |
| Heating Degree Days (F) | 1556. | 1221. | 1039. | 618. | 301. | 101. | 18. | 45. | 247. | 564. | 1026. | 1451. | 8187. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 19. | 116. | 229. | 203. | 43. | 0. | 0. | 0. | 610. |