| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 41.8 | 46.4 | 51.1 | 56.8 | 64.7 | 71.2 | 77.6 | 77.7 | 71.6 | 61.6 | 49.2 | 42.4 | 59.3 |
| Highest Mean Max. Temperature (F) | 48.0 | 54.0 | 58.6 | 63.9 | 70.8 | 79.2 | 87.1 | 89.8 | 80.9 | 72.2 | 53.8 | 47.6 | 63.4 |
| Year Highest Occurred | 1986 | 1963 | 1986 | 1987 | 1969 | 1961 | 1985 | 1967 | 1967 | 1987 | 1987 | 1989 | 1987 |
| Lowest Mean Max. Temperature (F) | 31.6 | 39.2 | 45.0 | 50.6 | 57.2 | 64.0 | 71.6 | 68.7 | 62.6 | 56.2 | 39.6 | 37.1 | 56.6 |
| Year Lowest Occurred | 1979 | 1979 | 1977 | 1975 | 1977 | 1981 | 1963 | 1975 | 1978 | 1984 | 1985 | 1978 | 1982 |
| Mean Temperature (F) | 37.1 | 40.4 | 43.5 | 47.8 | 54.3 | 60.3 | 65.0 | 65.3 | 60.8 | 53.0 | 43.9 | 37.9 | 50.8 |
| Highest Mean Temperature (F) | 42.1 | 46.5 | 48.7 | 53.3 | 59.1 | 65.8 | 70.4 | 72.9 | 66.1 | 58.9 | 48.3 | 41.5 | 53.8 |
| Year Highest Occurred | 1986 | 1963 | 1986 | 1987 | 1983 | 1961 | 1985 | 1967 | 1967 | 1987 | 1987 | 1989 | 1987 |
| Lowest Mean Temperature (F) | 27.8 | 34.0 | 39.2 | 42.3 | 49.4 | 55.8 | 60.4 | 59.7 | 56.2 | 49.0 | 33.5 | 32.7 | 49.0 |
| Year Lowest Occurred | 1979 | 1989 | 1977 | 1975 | 1977 | 1971 | 1963 | 1975 | 1977 | 1984 | 1985 | 1990 | 1975 |
| Mean Min. Temperature (F) | 32.3 | 34.4 | 35.9 | 38.7 | 43.9 | 49.3 | 52.3 | 52.8 | 50.0 | 44.3 | 38.5 | 33.3 | 42.1 |
| Highest Mean Min. Temperature (F) | 37.5 | 38.9 | 41.9 | 42.7 | 48.1 | 55.3 | 56.6 | 56.3 | 53.9 | 49.8 | 43.4 | 36.7 | 44.1 |
| Year Highest Occurred | 1981 | 1963 | 1983 | 1987 | 1983 | 1969 | 1982 | 1982 | 1974 | 1988 | 1965 | 1974 | 1987 |
| Lowest Mean Min. Temperature (F) | 23.9 | 27.7 | 32.0 | 34.0 | 40.8 | 46.3 | 49.1 | 48.2 | 45.6 | 40.3 | 27.4 | 27.3 | 39.2 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1967 | 1965 | 1986 | 1973 | 1972 | 1990 | 1985 | 1990 | 1985 |
| Mean Precipitation (in.) | 18.21 | 14.42 | 12.39 | 7.61 | 4.93 | 3.62 | 1.55 | 2.35 | 4.38 | 8.72 | 17.46 | 19.11 | 114.75 |
| Highest Precipitation (in.) | 32.08 | 30.78 | 19.99 | 11.80 | 11.35 | 10.64 | 6.79 | 9.40 | 10.74 | 19.20 | 32.52 | 31.17 | 141.84 |
| Year Highest Occurred | 1964 | 1961 | 1971 | 1978 | 1984 | 1981 | 1983 | 1968 | 1972 | 1967 | 1983 | 1973 | 1983 |
| Lowest Precipitation (in.) | 0.49 | 5.21 | 1.41 | 2.55 | 1.61 | 0.43 | 0.00 | 0.00 | 0.03 | 0.23 | 4.85 | 4.91 | 79.18 |
| Year Lowest Occurred | 1985 | 1973 | 1965 | 1977 | 1982 | 1965 | 1984 | 1967 | 1975 | 1987 | 1976 | 1985 | 1985 |
| Heating Degree Days (F) | 865. | 689. | 667. | 516. | 335. | 170. | 79. | 95. | 164. | 372. | 633. | 840. | 5425. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 29. | 79. | 104. | 38. | 0. | 0. | 0. | 250. |