| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 16.2 | 21.7 | 32.9 | 48.2 | 61.9 | 71.0 | 77.1 | 73.9 | 63.8 | 52.3 | 35.2 | 20.7 | 47.9 |
| Highest Mean Max. Temperature (F) | 28.7 | 32.4 | 42.7 | 60.5 | 69.9 | 76.6 | 84.1 | 81.8 | 68.0 | 66.6 | 42.9 | 30.2 | 52.8 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1988 | 1987 | 1988 | 1969 | 1963 | 1963 | 1963 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 7.5 | 13.6 | 25.7 | 37.3 | 54.5 | 64.7 | 72.0 | 67.9 | 56.5 | 46.5 | 27.1 | 10.2 | 43.9 |
| Year Lowest Occurred | 1982 | 1979 | 1972 | 1975 | 1970 | 1969 | 1972 | 1977 | 1965 | 1976 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 7.0 | 12.3 | 24.4 | 38.6 | 50.8 | 59.8 | 66.1 | 63.7 | 54.2 | 43.7 | 28.4 | 12.8 | 38.5 |
| Highest Mean Temperature (F) | 18.7 | 23.7 | 32.0 | 46.1 | 57.4 | 63.1 | 70.0 | 69.7 | 57.9 | 56.0 | 35.7 | 22.2 | 42.8 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1987 | 1988 | 1983 | 1963 | 1963 | 1963 | 1979 | 1987 |
| Lowest Mean Temperature (F) | -3.2 | 3.4 | 15.8 | 31.0 | 45.6 | 54.7 | 61.6 | 58.6 | 47.9 | 37.1 | 19.9 | 1.8 | 34.8 |
| Year Lowest Occurred | 1982 | 1989 | 1965 | 1975 | 1967 | 1969 | 1962 | 1977 | 1974 | 1976 | 1985 | 1983 | 1972 |
| Mean Min. Temperature (F) | -2.2 | 2.8 | 15.7 | 28.9 | 39.6 | 48.5 | 55.1 | 53.3 | 44.5 | 35.1 | 21.5 | 4.9 | 29.0 |
| Highest Mean Min. Temperature (F) | 8.6 | 16.1 | 24.9 | 33.2 | 45.6 | 51.0 | 59.7 | 59.7 | 48.6 | 45.3 | 28.4 | 14.2 | 32.7 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1977 | 1977 | 1970 | 1983 | 1983 | 1983 | 1963 | 1963 | 1979 | 1987 |
| Lowest Mean Min. Temperature (F) | -13.9 | -8.5 | 4.9 | 24.0 | 34.5 | 43.3 | 51.0 | 49.3 | 38.5 | 27.7 | 12.7 | -6.7 | 25.7 |
| Year Lowest Occurred | 1982 | 1967 | 1965 | 1962 | 1967 | 1982 | 1962 | 1977 | 1974 | 1976 | 1985 | 1983 | 1972 |
| Mean Precipitation (in.) | 1.22 | 0.80 | 1.91 | 2.25 | 3.03 | 3.82 | 3.61 | 3.99 | 3.84 | 2.49 | 1.80 | 1.24 | 30.00 |
| Highest Precipitation (in.) | 4.70 | 2.37 | 5.12 | 4.83 | 7.67 | 8.04 | 7.67 | 10.31 | 6.61 | 6.09 | 5.01 | 3.70 | 39.61 |
| Year Highest Occurred | 1969 | 1971 | 1965 | 1968 | 1962 | 1986 | 1978 | 1972 | 1980 | 1971 | 1983 | 1968 | 1972 |
| Lowest Precipitation (in.) | 0.14 | 0.13 | 0.39 | 0.24 | 0.15 | 0.83 | 1.09 | 0.71 | 0.98 | 0.48 | 0.19 | 0.16 | 19.84 |
| Year Lowest Occurred | 1961 | 1988 | 1969 | 1987 | 1976 | 1987 | 1989 | 1970 | 1974 | 1976 | 1976 | 1979 | 1987 |
| Heating Degree Days (F) | 1798. | 1476. | 1259. | 792. | 445. | 170. | 60. | 113. | 329. | 660. | 1098. | 1618. | 9818. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 14. | 94. | 72. | 0. | 0. | 0. | 0. | 180. |