| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 19.3 | 26.0 | 39.1 | 57.2 | 70.9 | 79.4 | 86.0 | 84.3 | 73.2 | 60.1 | 39.4 | 24.0 | 54.9 |
| Highest Mean Max. Temperature (F) | 32.8 | 39.0 | 50.7 | 70.1 | 79.8 | 90.3 | 92.5 | 92.4 | 81.6 | 70.3 | 48.2 | 39.1 | 59.0 |
| Year Highest Occurred | 1990 | 1987 | 1981 | 1987 | 1977 | 1988 | 1976 | 1983 | 1976 | 1963 | 1963 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 6.9 | 11.1 | 27.7 | 42.7 | 63.7 | 72.7 | 79.5 | 77.7 | 57.7 | 53.3 | 26.4 | 7.4 | 51.5 |
| Year Lowest Occurred | 1966 | 1979 | 1969 | 1975 | 1968 | 1969 | 1962 | 1966 | 1965 | 1969 | 1985 | 1983 | 1965 |
| Mean Temperature (F) | 8.8 | 15.4 | 28.5 | 44.3 | 56.7 | 66.0 | 71.8 | 69.6 | 58.7 | 46.8 | 29.2 | 14.1 | 42.5 |
| Highest Mean Temperature (F) | 23.8 | 30.1 | 37.7 | 53.8 | 64.9 | 75.1 | 77.3 | 77.4 | 64.0 | 55.7 | 36.4 | 25.4 | 47.2 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1988 | 1974 | 1983 | 1978 | 1963 | 1980 | 1979 | 1987 |
| Lowest Mean Temperature (F) | -6.7 | 0.9 | 17.3 | 35.6 | 51.3 | 59.5 | 67.2 | 62.6 | 48.1 | 41.8 | 15.9 | -0.8 | 39.5 |
| Year Lowest Occurred | 1982 | 1979 | 1969 | 1975 | 1968 | 1982 | 1962 | 1977 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -1.8 | 4.8 | 17.8 | 31.3 | 42.6 | 52.5 | 57.5 | 54.7 | 44.3 | 33.5 | 19.0 | 4.1 | 30.0 |
| Highest Mean Min. Temperature (F) | 14.8 | 21.1 | 29.2 | 37.9 | 49.9 | 59.8 | 62.3 | 62.3 | 48.7 | 41.1 | 24.9 | 15.6 | 35.4 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1988 | 1974 | 1983 | 1963 | 1963 | 1980 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -20.3 | -9.3 | 6.9 | 26.3 | 37.6 | 44.7 | 52.2 | 46.4 | 38.5 | 27.5 | 5.4 | -9.0 | 26.8 |
| Year Lowest Occurred | 1982 | 1979 | 1969 | 1961 | 1961 | 1982 | 1967 | 1977 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.60 | 0.56 | 1.29 | 2.36 | 2.72 | 3.38 | 2.55 | 2.43 | 2.06 | 1.41 | 0.78 | 0.44 | 20.58 |
| Highest Precipitation (in.) | 1.67 | 2.28 | 3.96 | 8.61 | 5.58 | 8.88 | 9.03 | 9.65 | 7.97 | 5.42 | 5.47 | 1.40 | 33.42 |
| Year Highest Occurred | 1969 | 1979 | 1975 | 1986 | 1972 | 1975 | 1962 | 1966 | 1973 | 1982 | 1977 | 1972 | 1986 |
| Lowest Precipitation (in.) | 0.00 | 0.05 | 0.11 | 0.00 | 0.33 | 0.45 | 0.29 | 0.25 | 0.34 | 0.00 | 0.00 | 0.00 | 12.76 |
| Year Lowest Occurred | 1961 | 1968 | 1971 | 1987 | 1976 | 1974 | 1976 | 1970 | 1974 | 1987 | 1990 | 1986 | 1974 |
| Heating Degree Days (F) | 1742. | 1389. | 1132. | 621. | 280. | 80. | 18. | 55. | 215. | 564. | 1074. | 1578. | 8748. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 23. | 110. | 229. | 198. | 26. | 0. | 0. | 0. | 586. |