| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 14.4 | 20.9 | 32.9 | 51.9 | 67.3 | 76.2 | 81.0 | 79.9 | 68.4 | 55.8 | 34.7 | 19.2 | 50.2 |
| Highest Mean Max. Temperature (F) | 29.0 | 33.5 | 43.6 | 66.4 | 78.8 | 88.4 | 86.8 | 89.4 | 75.7 | 68.3 | 44.6 | 31.8 | 54.9 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1980 | 1980 | 1988 | 1989 | 1961 | 1967 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | -1.4 | 3.1 | 22.6 | 35.6 | 54.0 | 69.1 | 76.0 | 71.6 | 56.4 | 44.5 | 19.2 | 5.3 | 45.7 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1979 | 1974 | 1985 | 1971 | 1977 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 3.8 | 10.3 | 22.6 | 40.0 | 53.5 | 62.5 | 67.2 | 65.3 | 54.7 | 43.3 | 24.9 | 9.4 | 38.1 |
| Highest Mean Temperature (F) | 17.3 | 25.1 | 34.8 | 50.5 | 62.6 | 71.9 | 71.8 | 71.8 | 60.0 | 53.4 | 34.1 | 20.7 | 43.2 |
| Year Highest Occurred | 1973 | 1984 | 1973 | 1987 | 1977 | 1988 | 1975 | 1983 | 1967 | 1963 | 1981 | 1965 | 1987 |
| Lowest Mean Temperature (F) | -11.6 | -6.7 | 10.1 | 28.6 | 45.6 | 55.1 | 62.8 | 58.6 | 43.9 | 35.3 | 10.2 | -3.3 | 34.5 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1979 | 1974 | 1969 | 1971 | 1977 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -6.9 | -0.4 | 12.2 | 28.0 | 39.6 | 48.7 | 53.4 | 50.7 | 41.0 | 30.8 | 15.0 | -0.5 | 26.0 |
| Highest Mean Min. Temperature (F) | 8.5 | 16.7 | 26.0 | 35.2 | 47.9 | 55.6 | 59.9 | 56.5 | 45.8 | 38.4 | 24.3 | 12.7 | 31.4 |
| Year Highest Occurred | 1973 | 1984 | 1973 | 1987 | 1977 | 1976 | 1975 | 1971 | 1978 | 1963 | 1980 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -21.8 | -16.4 | -2.5 | 21.6 | 34.2 | 40.9 | 48.9 | 45.4 | 31.3 | 20.2 | 1.2 | -12.7 | 21.8 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1979 | 1965 | 1969 | 1967 | 1964 | 1965 | 1976 | 1985 | 1964 | 1965 |
| Mean Precipitation (in.) | 0.54 | 0.38 | 0.73 | 1.21 | 2.31 | 2.94 | 2.70 | 2.69 | 1.82 | 0.98 | 0.46 | 0.46 | 17.22 |
| Highest Precipitation (in.) | 2.27 | 1.46 | 2.89 | 4.09 | 6.15 | 5.56 | 6.55 | 7.77 | 3.92 | 3.60 | 1.61 | 1.19 | 26.35 |
| Year Highest Occurred | 1981 | 1987 | 1990 | 1975 | 1974 | 1964 | 1975 | 1968 | 1973 | 1984 | 1986 | 1988 | 1975 |
| Lowest Precipitation (in.) | 0.01 | 0.00 | 0.00 | 0.02 | 0.28 | 0.47 | 0.13 | 0.13 | 0.22 | 0.00 | 0.04 | 0.05 | 9.58 |
| Year Lowest Occurred | 1963 | 1989 | 1977 | 1985 | 1980 | 1962 | 1976 | 1961 | 1962 | 1961 | 1974 | 1968 | 1988 |
| Heating Degree Days (F) | 1897. | 1532. | 1314. | 750. | 381. | 142. | 39. | 122. | 325. | 673. | 1203. | 1724. | 10102. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 25. | 67. | 107. | 131. | 16. | 0. | 0. | 0. | 346. |