| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 39.9 | 44.8 | 50.1 | 58.6 | 67.9 | 77.6 | 87.3 | 85.7 | 76.3 | 64.6 | 48.8 | 40.5 | 61.8 |
| Highest Mean Max. Temperature (F) | 48.2 | 51.9 | 58.5 | 67.8 | 75.8 | 85.2 | 92.3 | 91.5 | 83.2 | 76.6 | 59.1 | 49.6 | 64.3 |
| Year Highest Occurred | 1986 | 1963 | 1972 | 1987 | 1966 | 1974 | 1988 | 1986 | 1987 | 1988 | 1976 | 1976 | 1988 |
| Lowest Mean Max. Temperature (F) | 33.8 | 36.6 | 45.5 | 44.7 | 62.3 | 69.8 | 80.9 | 77.5 | 66.3 | 55.0 | 40.5 | 33.4 | 58.7 |
| Year Lowest Occurred | 1979 | 1966 | 1977 | 1967 | 1977 | 1980 | 1983 | 1968 | 1986 | 1969 | 1985 | 1990 | 1982 |
| Mean Temperature (F) | 27.1 | 32.0 | 36.0 | 42.6 | 51.1 | 59.7 | 66.8 | 64.8 | 55.3 | 45.0 | 34.1 | 27.2 | 45.1 |
| Highest Mean Temperature (F) | 34.5 | 39.0 | 43.4 | 50.0 | 56.2 | 67.1 | 70.5 | 69.1 | 59.8 | 52.1 | 38.7 | 34.4 | 47.2 |
| Year Highest Occurred | 1986 | 1963 | 1978 | 1990 | 1966 | 1977 | 1988 | 1986 | 1990 | 1988 | 1976 | 1981 | 1986 |
| Lowest Mean Temperature (F) | 18.8 | 23.6 | 31.6 | 34.0 | 45.4 | 54.0 | 61.9 | 60.2 | 48.7 | 39.5 | 24.9 | 18.1 | 42.3 |
| Year Lowest Occurred | 1962 | 1966 | 1964 | 1967 | 1964 | 1964 | 1983 | 1968 | 1965 | 1969 | 1985 | 1990 | 1964 |
| Mean Min. Temperature (F) | 14.2 | 19.1 | 21.9 | 26.5 | 34.3 | 41.8 | 46.2 | 44.0 | 34.3 | 25.4 | 19.3 | 13.7 | 28.4 |
| Highest Mean Min. Temperature (F) | 24.3 | 26.8 | 28.9 | 34.1 | 40.5 | 50.4 | 51.0 | 48.2 | 39.0 | 31.7 | 27.5 | 24.7 | 31.0 |
| Year Highest Occurred | 1978 | 1980 | 1978 | 1990 | 1987 | 1977 | 1976 | 1977 | 1976 | 1979 | 1983 | 1981 | 1983 |
| Lowest Mean Min. Temperature (F) | 0.2 | 10.6 | 14.6 | 20.2 | 26.9 | 37.6 | 41.0 | 39.8 | 26.5 | 19.7 | 9.0 | 2.7 | 24.6 |
| Year Lowest Occurred | 1962 | 1989 | 1965 | 1964 | 1964 | 1984 | 1963 | 1985 | 1965 | 1970 | 1961 | 1990 | 1964 |
| Mean Precipitation (in.) | 0.65 | 0.47 | 0.58 | 0.63 | 0.86 | 0.86 | 0.36 | 0.54 | 0.53 | 0.48 | 0.77 | 0.72 | 7.45 |
| Highest Precipitation (in.) | 1.99 | 2.25 | 2.09 | 2.49 | 4.15 | 2.30 | 1.16 | 2.14 | 1.94 | 1.54 | 2.33 | 3.97 | 15.15 |
| Year Highest Occurred | 1969 | 1986 | 1978 | 1978 | 1971 | 1964 | 1973 | 1979 | 1976 | 1969 | 1984 | 1983 | 1983 |
| Lowest Precipitation (in.) | 0.10 | 0.02 | 0.08 | 0.00 | 0.04 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 3.53 |
| Year Lowest Occurred | 1985 | 1967 | 1968 | 1962 | 1978 | 1985 | 1989 | 1985 | 1987 | 1988 | 1976 | 1976 | 1985 |
| Heating Degree Days (F) | 1175. | 924. | 899. | 672. | 431. | 200. | 52. | 85. | 304. | 620. | 927. | 1172. | 7461. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 41. | 107. | 79. | 13. | 0. | 0. | 0. | 240. |