| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 14.2 | 20.7 | 34.0 | 52.5 | 67.2 | 76.2 | 82.5 | 80.6 | 68.6 | 55.8 | 36.7 | 19.5 | 50.7 |
| Highest Mean Max. Temperature (F) | 30.4 | 33.9 | 45.8 | 65.2 | 76.6 | 85.1 | 88.0 | 87.0 | 74.8 | 69.4 | 47.0 | 27.9 | 56.0 |
| Year Highest Occurred | 1990 | 1987 | 1981 | 1987 | 1977 | 1988 | 1988 | 1969 | 1976 | 1963 | 1981 | 1986 | 1987 |
| Lowest Mean Max. Temperature (F) | 1.0 | 8.3 | 22.5 | 40.8 | 56.5 | 69.0 | 77.2 | 73.2 | 57.1 | 47.4 | 26.8 | 7.8 | 45.7 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1979 | 1979 | 1969 | 1971 | 1977 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 3.2 | 9.8 | 24.3 | 41.7 | 55.5 | 64.6 | 70.3 | 68.1 | 56.7 | 44.2 | 27.3 | 9.6 | 39.6 |
| Highest Mean Temperature (F) | 19.1 | 25.4 | 34.5 | 50.7 | 65.6 | 71.8 | 73.6 | 73.4 | 62.2 | 56.8 | 36.0 | 20.1 | 45.1 |
| Year Highest Occurred | 1990 | 1987 | 1981 | 1987 | 1977 | 1988 | 1983 | 1969 | 1978 | 1963 | 1981 | 1982 | 1987 |
| Lowest Mean Temperature (F) | -10.3 | -3.0 | 12.3 | 32.3 | 46.9 | 57.9 | 65.5 | 61.6 | 48.8 | 39.1 | 16.0 | -2.9 | 34.9 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1979 | 1979 | 1969 | 1971 | 1977 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -7.8 | -1.1 | 14.5 | 30.8 | 43.6 | 53.0 | 58.0 | 55.6 | 44.8 | 32.5 | 17.8 | -0.3 | 28.5 |
| Highest Mean Min. Temperature (F) | 8.6 | 16.9 | 26.5 | 36.1 | 54.6 | 58.5 | 61.8 | 59.8 | 50.2 | 44.2 | 26.2 | 12.6 | 34.1 |
| Year Highest Occurred | 1987 | 1987 | 1973 | 1987 | 1977 | 1988 | 1963 | 1969 | 1978 | 1963 | 1962 | 1982 | 1987 |
| Lowest Mean Min. Temperature (F) | -21.6 | -14.3 | 2.1 | 23.8 | 37.2 | 45.8 | 53.8 | 50.0 | 37.3 | 26.2 | 5.2 | -13.6 | 24.2 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1979 | 1979 | 1982 | 1971 | 1977 | 1984 | 1976 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.61 | 0.40 | 0.94 | 1.83 | 2.74 | 3.66 | 3.26 | 3.07 | 2.68 | 1.89 | 0.77 | 0.61 | 22.46 |
| Highest Precipitation (in.) | 2.01 | 1.96 | 1.76 | 4.53 | 7.27 | 12.09 | 8.60 | 10.38 | 6.87 | 9.33 | 3.15 | 1.49 | 32.25 |
| Year Highest Occurred | 1975 | 1979 | 1979 | 1986 | 1985 | 1975 | 1983 | 1963 | 1973 | 1984 | 1977 | 1972 | 1962 |
| Lowest Precipitation (in.) | 0.00 | 0.04 | 0.20 | 0.01 | 0.67 | 0.71 | 0.42 | 0.45 | 0.02 | 0.09 | 0.04 | 0.00 | 12.58 |
| Year Lowest Occurred | 1973 | 1988 | 1969 | 1980 | 1981 | 1972 | 1970 | 1967 | 1974 | 1963 | 1968 | 1986 | 1976 |
| Heating Degree Days (F) | 1916. | 1546. | 1262. | 699. | 329. | 98. | 17. | 57. | 265. | 645. | 1131. | 1717. | 9682. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 34. | 86. | 181. | 153. | 16. | 0. | 0. | 0. | 470. |