| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 13.2 | 19.2 | 32.3 | 51.0 | 66.3 | 75.6 | 81.1 | 79.9 | 67.6 | 55.1 | 34.5 | 18.3 | 49.5 |
| Highest Mean Max. Temperature (F) | 30.1 | 31.8 | 43.6 | 62.4 | 76.2 | 89.2 | 87.6 | 88.5 | 75.1 | 68.9 | 45.0 | 30.1 | 54.2 |
| Year Highest Occurred | 1990 | 1984 | 1963 | 1987 | 1977 | 1988 | 1989 | 1961 | 1990 | 1963 | 1987 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | -1.8 | 3.8 | 22.6 | 35.4 | 56.7 | 68.1 | 76.3 | 72.2 | 55.0 | 46.6 | 21.9 | 3.7 | 45.3 |
| Year Lowest Occurred | 1966 | 1979 | 1965 | 1979 | 1979 | 1985 | 1971 | 1985 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 2.9 | 8.8 | 22.1 | 39.7 | 53.3 | 63.2 | 68.2 | 65.9 | 54.7 | 43.0 | 24.9 | 8.6 | 37.9 |
| Highest Mean Temperature (F) | 19.4 | 23.2 | 35.2 | 48.0 | 62.1 | 72.8 | 73.1 | 71.9 | 60.2 | 53.9 | 34.3 | 19.9 | 42.6 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1977 | 1988 | 1989 | 1961 | 1967 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Temperature (F) | -12.0 | -5.8 | 11.8 | 28.4 | 46.5 | 56.5 | 63.4 | 59.0 | 45.4 | 37.6 | 12.1 | -4.8 | 34.7 |
| Year Lowest Occurred | 1982 | 1979 | 1969 | 1979 | 1979 | 1969 | 1972 | 1977 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -7.4 | -1.8 | 11.9 | 28.5 | 40.2 | 50.8 | 55.3 | 51.8 | 41.8 | 30.9 | 15.2 | -1.2 | 26.3 |
| Highest Mean Min. Temperature (F) | 8.7 | 14.5 | 26.9 | 33.5 | 47.9 | 56.3 | 60.6 | 56.9 | 47.1 | 38.9 | 23.9 | 12.0 | 30.9 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1977 | 1988 | 1975 | 1969 | 1978 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -22.3 | -15.4 | 0.2 | 21.3 | 34.9 | 44.7 | 49.6 | 45.5 | 35.8 | 23.8 | 2.2 | -13.2 | 23.9 |
| Year Lowest Occurred | 1982 | 1979 | 1969 | 1979 | 1983 | 1969 | 1972 | 1977 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.67 | 0.44 | 0.91 | 1.45 | 2.01 | 2.90 | 2.70 | 2.03 | 1.77 | 1.13 | 0.63 | 0.59 | 17.23 |
| Highest Precipitation (in.) | 2.71 | 1.50 | 3.30 | 3.65 | 5.99 | 7.18 | 6.88 | 5.65 | 5.08 | 4.17 | 2.80 | 1.20 | 23.54 |
| Year Highest Occurred | 1969 | 1969 | 1966 | 1984 | 1962 | 1964 | 1986 | 1980 | 1965 | 1982 | 1985 | 1967 | 1982 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.08 | 0.00 | 0.31 | 0.45 | 0.21 | 0.34 | 0.24 | 0.00 | 0.00 | 0.05 | 10.17 |
| Year Lowest Occurred | 1973 | 1988 | 1986 | 1987 | 1984 | 1974 | 1985 | 1967 | 1963 | 1976 | 1976 | 1989 | 1988 |
| Heating Degree Days (F) | 1925. | 1574. | 1330. | 759. | 377. | 130. | 34. | 97. | 321. | 682. | 1203. | 1748. | 10180. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 14. | 76. | 133. | 125. | 12. | 0. | 0. | 0. | 360. |