| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 15.1 | 21.9 | 34.8 | 54.2 | 70.2 | 78.6 | 83.6 | 82.4 | 71.3 | 58.2 | 36.3 | 20.0 | 52.2 |
| Highest Mean Max. Temperature (F) | 31.4 | 33.7 | 45.3 | 67.5 | 81.3 | 90.2 | 90.6 | 91.1 | 78.6 | 72.1 | 46.4 | 31.9 | 57.1 |
| Year Highest Occurred | 1990 | 1984 | 1981 | 1987 | 1977 | 1988 | 1989 | 1983 | 1963 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 1.5 | 5.8 | 25.4 | 42.1 | 60.4 | 69.6 | 76.8 | 76.1 | 58.4 | 47.4 | 23.0 | 8.5 | 48.6 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1979 | 1974 | 1969 | 1971 | 1974 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 5.7 | 11.9 | 25.1 | 42.3 | 56.3 | 65.6 | 70.6 | 68.6 | 58.3 | 46.4 | 27.6 | 11.2 | 40.8 |
| Highest Mean Temperature (F) | 19.9 | 25.8 | 35.7 | 51.3 | 66.9 | 73.2 | 77.2 | 76.1 | 63.8 | 58.0 | 36.9 | 21.9 | 45.1 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1977 | 1988 | 1975 | 1983 | 1963 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Temperature (F) | -7.7 | -2.4 | 15.8 | 33.2 | 49.4 | 58.0 | 65.7 | 62.8 | 49.2 | 39.9 | 14.3 | 0.8 | 37.9 |
| Year Lowest Occurred | 1982 | 1979 | 1970 | 1979 | 1979 | 1969 | 1971 | 1977 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -3.7 | 1.9 | 15.3 | 30.3 | 42.4 | 52.6 | 57.6 | 54.7 | 45.1 | 34.7 | 18.9 | 2.3 | 29.3 |
| Highest Mean Min. Temperature (F) | 8.4 | 17.8 | 28.1 | 35.1 | 52.5 | 56.8 | 67.8 | 61.0 | 50.3 | 43.8 | 27.4 | 13.3 | 33.1 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1977 | 1970 | 1975 | 1983 | 1978 | 1963 | 1981 | 1974 | 1987 |
| Lowest Mean Min. Temperature (F) | -16.8 | -10.5 | 5.2 | 24.2 | 37.1 | 46.3 | 54.0 | 49.4 | 39.6 | 29.1 | 5.5 | -6.9 | 26.5 |
| Year Lowest Occurred | 1982 | 1979 | 1970 | 1979 | 1967 | 1969 | 1972 | 1977 | 1974 | 1976 | 1985 | 1983 | 1989 |
| Mean Precipitation (in.) | 0.61 | 0.46 | 0.92 | 1.66 | 2.26 | 3.38 | 2.91 | 2.20 | 1.86 | 1.33 | 0.62 | 0.56 | 18.77 |
| Highest Precipitation (in.) | 2.09 | 2.02 | 1.96 | 5.07 | 7.27 | 9.59 | 8.92 | 6.58 | 6.02 | 4.68 | 2.34 | 1.39 | 26.92 |
| Year Highest Occurred | 1989 | 1987 | 1988 | 1967 | 1962 | 1964 | 1986 | 1980 | 1965 | 1984 | 1977 | 1988 | 1982 |
| Lowest Precipitation (in.) | 0.00 | 0.01 | 0.00 | 0.00 | 0.23 | 0.76 | 0.75 | 0.13 | 0.29 | 0.05 | 0.00 | 0.16 | 12.85 |
| Year Lowest Occurred | 1973 | 1968 | 1961 | 1988 | 1980 | 1961 | 1976 | 1961 | 1984 | 1976 | 1976 | 1981 | 1961 |
| Heating Degree Days (F) | 1838. | 1487. | 1237. | 681. | 307. | 89. | 19. | 64. | 228. | 577. | 1122. | 1668. | 9317. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 37. | 107. | 193. | 175. | 27. | 0. | 0. | 0. | 539. |