| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 42.5 | 47.0 | 51.1 | 58.8 | 68.4 | 77.3 | 84.9 | 84.3 | 77.8 | 66.9 | 50.6 | 42.5 | 62.7 |
| Highest Mean Max. Temperature (F) | 48.3 | 55.9 | 58.5 | 68.1 | 74.4 | 84.5 | 88.8 | 89.7 | 85.4 | 77.3 | 61.1 | 50.3 | 65.0 |
| Year Highest Occurred | 1961 | 1963 | 1972 | 1987 | 1973 | 1961 | 1988 | 1967 | 1974 | 1988 | 1976 | 1976 | 1988 |
| Lowest Mean Max. Temperature (F) | 37.4 | 37.7 | 44.8 | 42.9 | 59.2 | 71.2 | 79.1 | 76.4 | 68.2 | 58.8 | 43.7 | 36.2 | 59.7 |
| Year Lowest Occurred | 1969 | 1969 | 1975 | 1967 | 1977 | 1980 | 1983 | 1976 | 1986 | 1984 | 1984 | 1971 | 1982 |
| Mean Temperature (F) | 30.5 | 34.2 | 37.9 | 43.3 | 51.0 | 58.7 | 64.1 | 63.1 | 57.3 | 48.8 | 38.2 | 31.3 | 46.5 |
| Highest Mean Temperature (F) | 36.3 | 42.5 | 43.6 | 49.5 | 55.4 | 64.3 | 69.0 | 67.7 | 61.2 | 56.0 | 42.6 | 36.1 | 48.8 |
| Year Highest Occurred | 1986 | 1963 | 1986 | 1987 | 1973 | 1985 | 1988 | 1967 | 1987 | 1988 | 1976 | 1981 | 1988 |
| Lowest Mean Temperature (F) | 26.4 | 28.0 | 33.2 | 34.0 | 45.1 | 53.2 | 58.9 | 58.0 | 52.3 | 45.0 | 32.9 | 23.4 | 44.8 |
| Year Lowest Occurred | 1973 | 1990 | 1969 | 1967 | 1977 | 1980 | 1963 | 1976 | 1965 | 1984 | 1964 | 1990 | 1982 |
| Mean Min. Temperature (F) | 18.5 | 21.5 | 24.7 | 27.8 | 33.6 | 40.1 | 43.3 | 41.8 | 36.7 | 30.7 | 25.7 | 20.1 | 30.4 |
| Highest Mean Min. Temperature (F) | 26.2 | 29.1 | 29.5 | 34.1 | 39.3 | 45.6 | 49.1 | 47.2 | 40.3 | 36.0 | 30.3 | 28.2 | 33.1 |
| Year Highest Occurred | 1978 | 1963 | 1989 | 1990 | 1987 | 1985 | 1988 | 1988 | 1984 | 1987 | 1970 | 1981 | 1986 |
| Lowest Mean Min. Temperature (F) | 11.7 | 13.0 | 17.8 | 23.0 | 29.9 | 35.2 | 36.9 | 38.1 | 31.6 | 27.0 | 21.3 | 10.3 | 28.3 |
| Year Lowest Occurred | 1962 | 1990 | 1969 | 1975 | 1965 | 1980 | 1966 | 1963 | 1965 | 1961 | 1978 | 1990 | 1962 |
| Mean Precipitation (in.) | 5.86 | 4.79 | 4.34 | 1.99 | 1.13 | 0.80 | 0.25 | 0.48 | 0.87 | 2.24 | 4.67 | 4.99 | 32.41 |
| Highest Precipitation (in.) | 15.84 | 15.22 | 12.47 | 7.71 | 2.74 | 2.20 | 1.04 | 2.29 | 3.73 | 13.77 | 11.90 | 14.65 | 62.09 |
| Year Highest Occurred | 1970 | 1986 | 1989 | 1963 | 1990 | 1970 | 1974 | 1976 | 1986 | 1962 | 1981 | 1964 | 1983 |
| Lowest Precipitation (in.) | 0.22 | 0.55 | 0.47 | 0.16 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.12 | 0.00 | 9.88 |
| Year Lowest Occurred | 1976 | 1971 | 1977 | 1968 | 1975 | 1973 | 1989 | 1988 | 1974 | 1978 | 1975 | 1989 | 1976 |
| Heating Degree Days (F) | 1070. | 862. | 840. | 651. | 434. | 207. | 95. | 110. | 242. | 502. | 804. | 1045. | 6862. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 18. | 67. | 51. | 11. | 0. | 0. | 0. | 147. |