| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 21.7 | 27.0 | 39.0 | 56.4 | 70.9 | 80.5 | 84.0 | 81.1 | 72.4 | 60.6 | 42.1 | 26.0 | 55.1 |
| Highest Mean Max. Temperature (F) | 37.2 | 44.2 | 54.8 | 68.0 | 81.9 | 89.8 | 89.4 | 87.2 | 79.8 | 70.6 | 48.8 | 35.2 | 61.1 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1988 | 1988 | 1966 | 1983 | 1978 | 1963 | 1980 | 1986 | 1987 |
| Lowest Mean Max. Temperature (F) | 8.2 | 14.5 | 25.0 | 43.7 | 65.2 | 73.3 | 78.2 | 75.7 | 60.8 | 54.3 | 29.7 | 9.0 | 51.2 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1975 | 1974 | 1969 | 1971 | 1985 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 11.3 | 16.7 | 29.7 | 45.2 | 58.4 | 68.3 | 72.3 | 69.3 | 60.0 | 48.3 | 32.4 | 16.5 | 44.0 |
| Highest Mean Temperature (F) | 26.2 | 32.3 | 39.5 | 53.1 | 66.9 | 74.7 | 77.4 | 75.2 | 66.7 | 58.4 | 38.1 | 26.9 | 49.0 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1983 | 1983 | 1978 | 1963 | 1962 | 1965 | 1987 |
| Lowest Mean Temperature (F) | -0.5 | 3.0 | 16.4 | 38.0 | 53.4 | 61.2 | 67.1 | 64.7 | 51.9 | 43.2 | 21.0 | -0.1 | 41.0 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1975 | 1967 | 1969 | 1971 | 1985 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 0.9 | 6.4 | 20.2 | 34.0 | 45.9 | 56.0 | 60.5 | 57.4 | 47.5 | 36.0 | 22.6 | 7.0 | 32.9 |
| Highest Mean Min. Temperature (F) | 15.2 | 20.3 | 31.6 | 40.3 | 53.9 | 59.6 | 66.6 | 63.2 | 53.5 | 46.2 | 28.2 | 19.0 | 36.8 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1971 | 1983 | 1983 | 1978 | 1963 | 1983 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -11.0 | -8.5 | 7.3 | 28.1 | 40.3 | 49.1 | 55.9 | 52.8 | 42.9 | 29.4 | 12.2 | -9.2 | 30.7 |
| Year Lowest Occurred | 1982 | 1979 | 1969 | 1961 | 1967 | 1969 | 1971 | 1967 | 1984 | 1988 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.62 | 0.57 | 1.52 | 2.71 | 3.12 | 3.48 | 3.71 | 2.79 | 3.01 | 2.09 | 1.15 | 0.68 | 25.45 |
| Highest Precipitation (in.) | 2.63 | 2.10 | 4.59 | 7.58 | 6.84 | 7.92 | 9.84 | 6.54 | 9.39 | 7.88 | 3.21 | 2.55 | 40.90 |
| Year Highest Occurred | 1975 | 1971 | 1977 | 1986 | 1965 | 1984 | 1963 | 1979 | 1986 | 1968 | 1983 | 1969 | 1968 |
| Lowest Precipitation (in.) | 0.03 | 0.03 | 0.38 | 0.59 | 0.34 | 0.77 | 0.60 | 0.60 | 0.50 | 0.00 | 0.00 | 0.00 | 12.48 |
| Year Lowest Occurred | 1990 | 1976 | 1967 | 1980 | 1981 | 1988 | 1980 | 1973 | 1974 | 1989 | 1984 | 1979 | 1976 |
| Heating Degree Days (F) | 1665. | 1352. | 1094. | 594. | 247. | 38. | 12. | 27. | 174. | 518. | 978. | 1504. | 8203. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 42. | 137. | 239. | 160. | 24. | 0. | 0. | 0. | 602. |