| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 22.3 | 28.5 | 41.0 | 58.3 | 70.9 | 80.1 | 87.0 | 86.0 | 74.5 | 61.7 | 41.4 | 26.3 | 56.5 |
| Highest Mean Max. Temperature (F) | 37.8 | 41.8 | 52.3 | 69.2 | 78.0 | 91.4 | 92.8 | 92.1 | 82.8 | 72.4 | 49.2 | 40.2 | 61.5 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1988 | 1988 | 1974 | 1973 | 1978 | 1963 | 1962 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 7.6 | 12.2 | 28.7 | 46.4 | 65.1 | 73.5 | 80.9 | 80.0 | 59.7 | 54.3 | 24.9 | 8.3 | 53.3 |
| Year Lowest Occurred | 1978 | 1979 | 1969 | 1975 | 1968 | 1969 | 1962 | 1966 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 10.9 | 17.3 | 29.5 | 45.0 | 56.8 | 66.4 | 72.3 | 70.5 | 59.4 | 47.3 | 30.0 | 15.4 | 43.4 |
| Highest Mean Temperature (F) | 26.1 | 30.9 | 38.1 | 52.5 | 63.3 | 75.3 | 77.2 | 76.1 | 64.5 | 57.1 | 37.0 | 26.2 | 48.4 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1974 | 1973 | 1978 | 1963 | 1962 | 1986 | 1987 |
| Lowest Mean Temperature (F) | -3.7 | 1.0 | 18.5 | 38.6 | 51.9 | 59.1 | 68.0 | 65.3 | 49.0 | 41.8 | 15.3 | -2.5 | 40.1 |
| Year Lowest Occurred | 1982 | 1979 | 1969 | 1975 | 1979 | 1985 | 1971 | 1977 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -0.5 | 5.9 | 18.1 | 31.6 | 42.6 | 52.7 | 57.6 | 55.1 | 44.2 | 32.9 | 18.7 | 4.5 | 30.3 |
| Highest Mean Min. Temperature (F) | 14.3 | 19.9 | 29.0 | 35.9 | 49.1 | 59.1 | 61.6 | 60.0 | 49.2 | 41.7 | 25.1 | 16.7 | 35.1 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1988 | 1974 | 1973 | 1963 | 1963 | 1987 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -15.8 | -10.3 | 8.3 | 25.8 | 37.3 | 42.8 | 52.6 | 49.4 | 36.6 | 26.8 | 5.7 | -13.2 | 26.6 |
| Year Lowest Occurred | 1982 | 1979 | 1969 | 1961 | 1984 | 1985 | 1971 | 1977 | 1984 | 1976 | 1985 | 1983 | 1985 |
| Mean Precipitation (in.) | 0.36 | 0.40 | 1.16 | 2.28 | 2.63 | 3.54 | 2.62 | 2.05 | 1.54 | 1.13 | 0.57 | 0.37 | 18.65 |
| Highest Precipitation (in.) | 1.02 | 1.91 | 3.67 | 6.10 | 5.80 | 7.05 | 5.03 | 6.04 | 3.43 | 4.41 | 2.32 | 0.94 | 24.52 |
| Year Highest Occurred | 1969 | 1969 | 1977 | 1986 | 1974 | 1984 | 1979 | 1980 | 1973 | 1982 | 1977 | 1968 | 1963 |
| Lowest Precipitation (in.) | 0.00 | 0.03 | 0.04 | 0.09 | 0.57 | 0.51 | 0.34 | 0.18 | 0.04 | 0.00 | 0.00 | 0.00 | 9.84 |
| Year Lowest Occurred | 1961 | 1985 | 1967 | 1987 | 1989 | 1974 | 1975 | 1972 | 1972 | 1988 | 1980 | 1986 | 1976 |
| Heating Degree Days (F) | 1677. | 1336. | 1101. | 600. | 272. | 80. | 11. | 28. | 203. | 549. | 1050. | 1538. | 8445. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 18. | 122. | 238. | 199. | 35. | 0. | 0. | 0. | 612. |