| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 24.6 | 30.3 | 41.8 | 58.1 | 70.9 | 78.6 | 82.9 | 80.5 | 71.5 | 60.3 | 43.5 | 28.5 | 56.0 |
| Highest Mean Max. Temperature (F) | 37.2 | 39.8 | 51.6 | 66.5 | 80.4 | 85.7 | 87.5 | 86.7 | 76.2 | 71.0 | 49.8 | 36.2 | 59.4 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1977 | 1977 | 1988 | 1988 | 1983 | 1978 | 1963 | 1963 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 12.9 | 22.6 | 33.6 | 48.8 | 63.0 | 69.8 | 78.0 | 77.0 | 65.8 | 53.9 | 35.6 | 18.4 | 53.1 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1983 | 1969 | 1971 | 1986 | 1965 | 1980 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 13.5 | 18.4 | 30.7 | 45.6 | 57.1 | 65.3 | 69.7 | 67.3 | 58.9 | 48.4 | 34.1 | 19.3 | 44.0 |
| Highest Mean Temperature (F) | 26.3 | 30.0 | 39.5 | 51.1 | 64.2 | 69.5 | 73.9 | 72.7 | 63.2 | 58.1 | 39.7 | 27.8 | 47.6 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1977 | 1977 | 1988 | 1983 | 1983 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Temperature (F) | 1.2 | 9.8 | 23.5 | 38.0 | 51.4 | 58.2 | 64.9 | 63.9 | 54.4 | 41.9 | 25.1 | 8.7 | 41.5 |
| Year Lowest Occurred | 1977 | 1978 | 1965 | 1975 | 1983 | 1969 | 1971 | 1986 | 1975 | 1988 | 1976 | 1983 | 1972 |
| Mean Min. Temperature (F) | 2.5 | 6.6 | 19.5 | 33.1 | 43.2 | 51.9 | 56.6 | 54.2 | 46.2 | 36.5 | 24.7 | 10.1 | 32.1 |
| Highest Mean Min. Temperature (F) | 15.4 | 21.0 | 29.6 | 38.5 | 50.4 | 56.8 | 60.6 | 58.6 | 50.2 | 45.1 | 29.5 | 20.9 | 35.8 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1985 | 1962 | 1971 | 1987 | 1983 | 1977 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -10.5 | -4.3 | 10.7 | 27.1 | 37.5 | 46.0 | 51.7 | 49.8 | 39.5 | 28.3 | 11.5 | -3.5 | 28.2 |
| Year Lowest Occurred | 1977 | 1978 | 1969 | 1975 | 1971 | 1982 | 1971 | 1971 | 1976 | 1976 | 1976 | 1976 | 1976 |
| Mean Precipitation (in.) | 0.89 | 0.95 | 2.06 | 2.78 | 3.87 | 3.89 | 3.97 | 3.92 | 4.27 | 2.33 | 1.92 | 1.36 | 32.21 |
| Highest Precipitation (in.) | 2.72 | 2.46 | 4.54 | 5.72 | 9.40 | 9.06 | 9.56 | 10.57 | 9.65 | 6.18 | 4.26 | 3.30 | 40.64 |
| Year Highest Occurred | 1969 | 1981 | 1966 | 1976 | 1973 | 1967 | 1982 | 1980 | 1986 | 1979 | 1983 | 1972 | 1986 |
| Lowest Precipitation (in.) | 0.00 | 0.03 | 0.30 | 0.85 | 1.40 | 1.07 | 1.07 | 0.74 | 0.27 | 0.40 | 0.00 | 0.26 | 23.88 |
| Year Lowest Occurred | 1981 | 1978 | 1978 | 1984 | 1981 | 1983 | 1974 | 1968 | 1979 | 1964 | 1976 | 1989 | 1988 |
| Heating Degree Days (F) | 1597. | 1305. | 1063. | 582. | 278. | 76. | 17. | 36. | 190. | 515. | 927. | 1417. | 8003. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 33. | 85. | 163. | 107. | 7. | 0. | 0. | 0. | 395. |