| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 34.8 | 40.6 | 49.1 | 58.8 | 67.4 | 75.3 | 78.4 | 76.2 | 70.7 | 62.4 | 48.2 | 37.2 | 58.3 |
| Highest Mean Max. Temperature (F) | 45.5 | 48.8 | 59.5 | 65.6 | 74.2 | 80.0 | 83.5 | 80.1 | 75.6 | 67.4 | 54.5 | 49.1 | 61.5 |
| Year Highest Occurred | 1981 | 1970 | 1972 | 1981 | 1984 | 1981 | 1980 | 1983 | 1983 | 1967 | 1967 | 1980 | 1981 |
| Lowest Mean Max. Temperature (F) | 25.7 | 32.5 | 40.8 | 52.2 | 63.2 | 70.6 | 75.3 | 72.0 | 67.1 | 53.3 | 36.3 | 28.6 | 55.7 |
| Year Lowest Occurred | 1984 | 1966 | 1964 | 1983 | 1980 | 1969 | 1973 | 1976 | 1965 | 1969 | 1972 | 1978 | 1975 |
| Mean Temperature (F) | 20.5 | 26.1 | 34.5 | 43.0 | 51.4 | 58.8 | 63.5 | 61.6 | 55.4 | 46.6 | 33.8 | 23.1 | 43.2 |
| Highest Mean Temperature (F) | 30.0 | 32.8 | 41.5 | 48.3 | 56.1 | 63.2 | 66.9 | 65.2 | 59.4 | 50.5 | 38.4 | 33.9 | 46.1 |
| Year Highest Occurred | 1981 | 1970 | 1972 | 1981 | 1984 | 1981 | 1980 | 1983 | 1983 | 1963 | 1981 | 1980 | 1981 |
| Lowest Mean Temperature (F) | 10.8 | 17.8 | 26.3 | 38.0 | 48.7 | 55.6 | 60.7 | 58.8 | 52.5 | 40.0 | 23.6 | 14.1 | 41.0 |
| Year Lowest Occurred | 1984 | 1964 | 1964 | 1983 | 1983 | 1969 | 1973 | 1976 | 1961 | 1969 | 1972 | 1978 | 1975 |
| Mean Min. Temperature (F) | 6.1 | 11.7 | 20.0 | 27.3 | 35.3 | 42.3 | 48.6 | 47.0 | 40.0 | 30.7 | 19.3 | 8.9 | 28.1 |
| Highest Mean Min. Temperature (F) | 14.4 | 18.9 | 25.1 | 31.3 | 38.4 | 46.4 | 51.2 | 50.7 | 43.2 | 34.9 | 23.7 | 18.6 | 30.8 |
| Year Highest Occurred | 1981 | 1976 | 1990 | 1990 | 1963 | 1981 | 1981 | 1982 | 1983 | 1972 | 1965 | 1980 | 1981 |
| Lowest Mean Min. Temperature (F) | -4.1 | 2.0 | 11.7 | 21.9 | 32.5 | 39.3 | 46.0 | 44.2 | 36.2 | 26.6 | 10.8 | -0.5 | 25.9 |
| Year Lowest Occurred | 1984 | 1964 | 1964 | 1970 | 1971 | 1975 | 1973 | 1974 | 1968 | 1970 | 1972 | 1978 | 1964 |
| Mean Precipitation (in.) | 0.32 | 0.41 | 0.76 | 0.62 | 0.77 | 0.74 | 1.66 | 1.93 | 1.16 | 0.87 | 0.60 | 0.61 | 10.45 |
| Highest Precipitation (in.) | 0.95 | 1.44 | 3.13 | 2.07 | 2.71 | 3.53 | 4.45 | 4.91 | 2.76 | 3.15 | 1.61 | 2.54 | 16.85 |
| Year Highest Occurred | 1987 | 1964 | 1985 | 1990 | 1980 | 1969 | 1968 | 1982 | 1985 | 1972 | 1986 | 1967 | 1969 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 0.57 | 0.19 | 0.02 | 0.00 | 0.02 | 5.39 |
| Year Lowest Occurred | 1973 | 1970 | 1966 | 1974 | 1974 | 1980 | 1976 | 1978 | 1966 | 1964 | 1989 | 1980 | 1966 |
| Heating Degree Days (F) | 1380. | 1089. | 946. | 660. | 422. | 193. | 76. | 121. | 288. | 570. | 936. | 1299. | 7980. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 7. | 30. | 16. | 0. | 0. | 0. | 0. | 53. |