| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 21.1 | 27.0 | 39.9 | 57.0 | 70.1 | 79.6 | 84.7 | 82.2 | 72.3 | 60.4 | 41.6 | 26.0 | 55.2 |
| Highest Mean Max. Temperature (F) | 36.5 | 44.1 | 54.0 | 68.6 | 80.8 | 88.5 | 89.7 | 88.7 | 81.1 | 70.6 | 50.0 | 36.8 | 60.7 |
| Year Highest Occurred | 1990 | 1987 | 1981 | 1981 | 1977 | 1988 | 1974 | 1983 | 1978 | 1963 | 1980 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 9.7 | 17.9 | 26.0 | 44.1 | 63.0 | 72.9 | 78.3 | 77.7 | 59.4 | 52.9 | 29.8 | 7.8 | 52.2 |
| Year Lowest Occurred | 1979 | 1978 | 1965 | 1975 | 1961 | 1969 | 1962 | 1985 | 1965 | 1969 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 10.0 | 16.1 | 29.3 | 44.6 | 56.9 | 66.4 | 71.5 | 68.8 | 58.7 | 46.7 | 30.9 | 15.4 | 42.9 |
| Highest Mean Temperature (F) | 25.2 | 29.6 | 36.9 | 53.0 | 66.6 | 74.1 | 75.9 | 74.7 | 65.4 | 58.0 | 37.5 | 26.1 | 46.4 |
| Year Highest Occurred | 1990 | 1987 | 1981 | 1981 | 1977 | 1988 | 1974 | 1983 | 1978 | 1963 | 1963 | 1965 | 1981 |
| Lowest Mean Temperature (F) | -1.1 | 6.7 | 16.1 | 36.7 | 50.6 | 59.8 | 67.2 | 63.7 | 50.9 | 38.9 | 20.2 | -2.8 | 40.8 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1975 | 1967 | 1982 | 1971 | 1986 | 1965 | 1976 | 1985 | 1983 | 1985 |
| Mean Min. Temperature (F) | -1.2 | 5.3 | 18.6 | 32.1 | 43.7 | 53.2 | 58.3 | 55.3 | 45.0 | 33.0 | 20.1 | 4.8 | 30.7 |
| Highest Mean Min. Temperature (F) | 13.8 | 15.7 | 27.6 | 37.4 | 52.3 | 59.7 | 62.7 | 60.6 | 52.1 | 45.3 | 27.4 | 17.4 | 33.8 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1981 | 1977 | 1988 | 1966 | 1983 | 1963 | 1963 | 1962 | 1965 | 1963 |
| Lowest Mean Min. Temperature (F) | -12.6 | -5.1 | 5.9 | 27.5 | 36.8 | 46.2 | 53.3 | 47.6 | 36.7 | 23.6 | 10.6 | -13.3 | 28.0 |
| Year Lowest Occurred | 1977 | 1989 | 1969 | 1983 | 1967 | 1982 | 1985 | 1987 | 1984 | 1976 | 1985 | 1983 | 1985 |
| Mean Precipitation (in.) | 0.46 | 0.62 | 1.58 | 2.34 | 3.28 | 3.86 | 3.44 | 3.07 | 3.05 | 2.06 | 1.16 | 0.72 | 25.64 |
| Highest Precipitation (in.) | 1.83 | 2.65 | 4.12 | 5.33 | 9.00 | 9.67 | 7.75 | 8.26 | 10.25 | 6.30 | 4.39 | 2.11 | 35.08 |
| Year Highest Occurred | 1969 | 1969 | 1977 | 1986 | 1965 | 1971 | 1989 | 1980 | 1986 | 1984 | 1983 | 1968 | 1986 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.18 | 0.37 | 0.25 | 1.31 | 0.99 | 0.70 | 0.41 | 0.03 | 0.04 | 0.01 | 9.63 |
| Year Lowest Occurred | 1974 | 1970 | 1967 | 1987 | 1976 | 1978 | 1988 | 1976 | 1990 | 1988 | 1984 | 1986 | 1976 |
| Heating Degree Days (F) | 1705. | 1369. | 1107. | 612. | 283. | 70. | 15. | 40. | 214. | 567. | 1023. | 1538. | 8543. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 32. | 112. | 216. | 158. | 25. | 0. | 0. | 0. | 543. |