| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 22.3 | 27.7 | 39.5 | 56.2 | 69.8 | 79.2 | 83.7 | 80.6 | 71.7 | 59.7 | 41.9 | 26.1 | 54.9 |
| Highest Mean Max. Temperature (F) | 36.3 | 42.9 | 51.4 | 64.4 | 78.8 | 85.8 | 89.3 | 88.4 | 79.0 | 71.4 | 49.9 | 35.3 | 58.7 |
| Year Highest Occurred | 1990 | 1987 | 1981 | 1987 | 1977 | 1988 | 1974 | 1983 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Max. Temperature (F) | 8.5 | 15.1 | 26.7 | 45.3 | 64.7 | 72.2 | 78.9 | 75.4 | 60.9 | 54.2 | 30.6 | 9.4 | 51.3 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1975 | 1967 | 1969 | 1971 | 1986 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 12.3 | 17.3 | 29.7 | 44.8 | 58.0 | 67.7 | 72.4 | 69.4 | 59.8 | 47.9 | 32.4 | 17.2 | 44.1 |
| Highest Mean Temperature (F) | 26.1 | 31.3 | 38.0 | 51.9 | 65.9 | 73.0 | 76.6 | 76.2 | 66.0 | 58.3 | 38.8 | 27.8 | 48.1 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1988 | 1974 | 1983 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Temperature (F) | -0.1 | 3.8 | 18.2 | 37.6 | 52.1 | 61.5 | 68.0 | 65.1 | 52.7 | 42.8 | 22.3 | 1.2 | 41.2 |
| Year Lowest Occurred | 1979 | 1979 | 1969 | 1975 | 1967 | 1969 | 1971 | 1986 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 2.2 | 6.8 | 19.9 | 33.4 | 46.1 | 56.2 | 61.1 | 58.1 | 47.8 | 36.1 | 22.9 | 8.1 | 33.2 |
| Highest Mean Min. Temperature (F) | 15.8 | 19.6 | 30.5 | 39.8 | 53.0 | 60.7 | 65.4 | 63.9 | 53.0 | 45.2 | 28.6 | 20.2 | 37.5 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1963 | 1983 | 1983 | 1978 | 1963 | 1962 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -8.9 | -7.5 | 6.1 | 28.6 | 39.5 | 50.8 | 57.0 | 54.5 | 42.3 | 30.6 | 14.0 | -7.1 | 30.7 |
| Year Lowest Occurred | 1982 | 1979 | 1969 | 1961 | 1967 | 1969 | 1971 | 1967 | 1974 | 1976 | 1985 | 1983 | 1972 |
| Mean Precipitation (in.) | 0.56 | 0.72 | 1.76 | 2.46 | 3.14 | 4.27 | 3.76 | 3.61 | 3.22 | 1.87 | 1.13 | 0.89 | 27.39 |
| Highest Precipitation (in.) | 3.26 | 2.54 | 4.63 | 5.63 | 7.17 | 9.49 | 12.37 | 12.01 | 9.11 | 4.69 | 4.59 | 6.13 | 41.08 |
| Year Highest Occurred | 1975 | 1969 | 1987 | 1985 | 1982 | 1984 | 1978 | 1979 | 1965 | 1968 | 1973 | 1968 | 1979 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.28 | 0.50 | 1.29 | 1.24 | 0.30 | 0.38 | 0.37 | 0.00 | 0.04 | 0.00 | 14.99 |
| Year Lowest Occurred | 1985 | 1987 | 1978 | 1971 | 1978 | 1988 | 1975 | 1976 | 1984 | 1989 | 1980 | 1982 | 1976 |
| Heating Degree Days (F) | 1634. | 1336. | 1094. | 606. | 255. | 46. | 6. | 27. | 177. | 530. | 978. | 1482. | 8171. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 38. | 127. | 235. | 164. | 21. | 0. | 0. | 0. | 585. |