| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 18.5 | 25.2 | 38.0 | 55.3 | 67.9 | 76.3 | 81.1 | 78.2 | 67.4 | 56.8 | 39.3 | 23.2 | 52.3 |
| Highest Mean Max. Temperature (F) | 31.5 | 37.6 | 49.4 | 66.9 | 78.5 | 82.5 | 86.7 | 86.2 | 72.1 | 68.4 | 52.8 | 31.8 | 57.0 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1988 | 1969 | 1978 | 1963 | 1975 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 8.5 | 16.2 | 28.0 | 46.8 | 62.1 | 71.0 | 74.5 | 72.0 | 58.4 | 51.0 | 31.5 | 11.5 | 47.6 |
| Year Lowest Occurred | 1977 | 1989 | 1965 | 1972 | 1967 | 1969 | 1972 | 1985 | 1965 | 1987 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 7.3 | 13.3 | 27.3 | 43.4 | 55.4 | 64.1 | 69.2 | 66.5 | 56.5 | 45.8 | 30.4 | 13.4 | 41.1 |
| Highest Mean Temperature (F) | 21.4 | 27.3 | 37.6 | 51.4 | 64.8 | 68.6 | 73.2 | 71.2 | 60.9 | 55.5 | 41.0 | 23.1 | 46.2 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1988 | 1983 | 1978 | 1963 | 1975 | 1979 | 1987 |
| Lowest Mean Temperature (F) | -2.9 | 4.0 | 16.2 | 37.3 | 48.5 | 58.3 | 63.7 | 62.3 | 50.0 | 40.5 | 22.6 | 0.1 | 37.7 |
| Year Lowest Occurred | 1982 | 1989 | 1965 | 1975 | 1967 | 1969 | 1971 | 1977 | 1965 | 1976 | 1985 | 1983 | 1972 |
| Mean Min. Temperature (F) | -3.9 | 1.3 | 16.5 | 31.4 | 42.9 | 52.0 | 57.3 | 54.7 | 45.5 | 34.8 | 21.5 | 3.5 | 29.8 |
| Highest Mean Min. Temperature (F) | 11.2 | 17.0 | 26.8 | 36.8 | 51.0 | 55.9 | 61.8 | 61.6 | 49.7 | 42.5 | 29.1 | 14.8 | 35.4 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1986 | 1977 | 1971 | 1987 | 1983 | 1983 | 1963 | 1975 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -15.7 | -9.8 | 4.4 | 26.9 | 34.8 | 45.6 | 52.2 | 50.6 | 39.7 | 28.5 | 13.6 | -11.4 | 26.9 |
| Year Lowest Occurred | 1966 | 1967 | 1965 | 1961 | 1967 | 1969 | 1971 | 1977 | 1974 | 1976 | 1985 | 1983 | 1967 |
| Mean Precipitation (in.) | 1.11 | 0.84 | 1.69 | 2.17 | 3.52 | 4.49 | 3.92 | 4.35 | 3.74 | 2.44 | 1.70 | 1.32 | 31.29 |
| Highest Precipitation (in.) | 3.30 | 2.60 | 3.94 | 5.30 | 7.30 | 11.88 | 9.21 | 9.72 | 8.49 | 6.59 | 4.21 | 4.22 | 48.95 |
| Year Highest Occurred | 1969 | 1981 | 1977 | 1986 | 1962 | 1968 | 1978 | 1973 | 1985 | 1971 | 1975 | 1968 | 1968 |
| Lowest Precipitation (in.) | 0.04 | 0.06 | 0.37 | 0.11 | 0.60 | 0.86 | 1.38 | 0.98 | 0.58 | 0.48 | 0.13 | 0.24 | 18.77 |
| Year Lowest Occurred | 1981 | 1987 | 1974 | 1987 | 1969 | 1988 | 1989 | 1961 | 1967 | 1978 | 1967 | 1979 | 1976 |
| Heating Degree Days (F) | 1789. | 1448. | 1169. | 648. | 326. | 91. | 24. | 60. | 262. | 595. | 1038. | 1600. | 9050. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 28. | 64. | 154. | 107. | 7. | 0. | 0. | 0. | 360. |