| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 38.7 | 44.3 | 49.6 | 57.3 | 65.9 | 75.2 | 84.2 | 83.0 | 74.6 | 63.7 | 47.1 | 39.1 | 60.2 |
| Highest Mean Max. Temperature (F) | 44.6 | 52.1 | 56.8 | 68.1 | 72.4 | 82.8 | 89.4 | 90.5 | 82.3 | 75.5 | 56.8 | 46.5 | 63.1 |
| Year Highest Occurred | 1961 | 1963 | 1986 | 1987 | 1966 | 1961 | 1985 | 1967 | 1990 | 1988 | 1976 | 1989 | 1988 |
| Lowest Mean Max. Temperature (F) | 30.0 | 35.1 | 44.2 | 48.0 | 56.8 | 68.1 | 78.0 | 73.8 | 64.9 | 54.1 | 36.4 | 32.2 | 57.2 |
| Year Lowest Occurred | 1979 | 1989 | 1975 | 1967 | 1977 | 1980 | 1987 | 1976 | 1985 | 1984 | 1985 | 1983 | 1982 |
| Mean Temperature (F) | 28.3 | 33.7 | 37.7 | 42.7 | 50.0 | 58.1 | 64.8 | 63.7 | 55.7 | 46.9 | 36.2 | 29.0 | 45.6 |
| Highest Mean Temperature (F) | 33.7 | 41.2 | 43.2 | 50.0 | 54.2 | 63.2 | 69.4 | 68.8 | 61.4 | 54.8 | 41.4 | 34.5 | 47.3 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1987 | 1969 | 1986 | 1985 | 1971 | 1990 | 1988 | 1976 | 1980 | 1988 |
| Lowest Mean Temperature (F) | 17.6 | 22.7 | 34.0 | 35.8 | 44.8 | 54.1 | 59.4 | 59.2 | 49.7 | 41.9 | 24.1 | 21.4 | 42.9 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1967 | 1977 | 1980 | 1963 | 1980 | 1985 | 1984 | 1985 | 1990 | 1985 |
| Mean Min. Temperature (F) | 17.9 | 23.0 | 25.6 | 28.1 | 34.1 | 41.1 | 45.3 | 44.3 | 36.7 | 30.0 | 25.1 | 18.8 | 30.8 |
| Highest Mean Min. Temperature (F) | 25.5 | 30.3 | 30.7 | 33.1 | 38.1 | 45.4 | 50.2 | 48.8 | 43.3 | 36.6 | 30.1 | 27.0 | 33.2 |
| Year Highest Occurred | 1978 | 1963 | 1983 | 1988 | 1969 | 1970 | 1975 | 1986 | 1963 | 1979 | 1966 | 1973 | 1986 |
| Lowest Mean Min. Temperature (F) | 5.1 | 10.2 | 20.8 | 22.9 | 30.2 | 36.6 | 39.7 | 39.4 | 31.7 | 26.7 | 11.8 | 8.2 | 27.7 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1968 | 1964 | 1962 | 1963 | 1980 | 1965 | 1974 | 1985 | 1985 | 1985 |
| Mean Precipitation (in.) | 1.19 | 0.90 | 0.99 | 0.78 | 1.15 | 1.07 | 0.68 | 0.86 | 0.59 | 0.79 | 1.63 | 1.51 | 12.14 |
| Highest Precipitation (in.) | 3.64 | 2.57 | 2.54 | 2.32 | 3.42 | 3.31 | 3.47 | 4.77 | 2.87 | 2.61 | 3.67 | 4.98 | 24.57 |
| Year Highest Occurred | 1970 | 1986 | 1983 | 1978 | 1977 | 1980 | 1987 | 1976 | 1986 | 1962 | 1983 | 1964 | 1983 |
| Lowest Precipitation (in.) | 0.24 | 0.01 | 0.06 | 0.07 | 0.08 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.29 | 0.19 | 6.06 |
| Year Lowest Occurred | 1968 | 1967 | 1965 | 1966 | 1975 | 1973 | 1988 | 1980 | 1987 | 1988 | 1976 | 1989 | 1967 |
| Heating Degree Days (F) | 1138. | 876. | 846. | 669. | 465. | 224. | 82. | 108. | 294. | 561. | 864. | 1116. | 7243. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 17. | 76. | 67. | 15. | 0. | 0. | 0. | 175. |