| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 37.7 | 42.0 | 46.0 | 53.2 | 62.3 | 71.2 | 79.9 | 79.8 | 71.8 | 60.9 | 44.9 | 37.9 | 57.3 |
| Highest Mean Max. Temperature (F) | 42.6 | 48.7 | 53.0 | 62.3 | 67.6 | 78.4 | 85.5 | 87.0 | 79.9 | 73.5 | 51.6 | 44.9 | 60.5 |
| Year Highest Occurred | 1961 | 1963 | 1978 | 1987 | 1966 | 1961 | 1985 | 1967 | 1987 | 1988 | 1969 | 1989 | 1987 |
| Lowest Mean Max. Temperature (F) | 31.9 | 34.3 | 38.6 | 44.7 | 54.4 | 65.4 | 71.5 | 70.9 | 62.4 | 51.4 | 36.8 | 31.4 | 54.9 |
| Year Lowest Occurred | 1979 | 1989 | 1964 | 1975 | 1977 | 1971 | 1983 | 1976 | 1986 | 1984 | 1985 | 1983 | 1984 |
| Mean Temperature (F) | 27.3 | 31.0 | 34.8 | 40.5 | 47.9 | 55.8 | 61.7 | 61.0 | 53.4 | 45.0 | 35.1 | 28.4 | 43.5 |
| Highest Mean Temperature (F) | 33.1 | 38.3 | 40.3 | 47.1 | 52.5 | 61.2 | 67.1 | 66.0 | 59.2 | 53.6 | 39.1 | 33.0 | 45.7 |
| Year Highest Occurred | 1981 | 1963 | 1978 | 1990 | 1987 | 1961 | 1985 | 1986 | 1990 | 1988 | 1976 | 1962 | 1987 |
| Lowest Mean Temperature (F) | 19.5 | 21.7 | 28.9 | 33.0 | 43.2 | 51.4 | 56.8 | 56.9 | 48.6 | 39.0 | 26.1 | 20.8 | 41.4 |
| Year Lowest Occurred | 1979 | 1989 | 1964 | 1975 | 1977 | 1976 | 1983 | 1964 | 1986 | 1969 | 1985 | 1990 | 1964 |
| Mean Min. Temperature (F) | 16.9 | 19.9 | 23.5 | 27.8 | 33.6 | 40.3 | 43.6 | 42.1 | 35.0 | 29.0 | 25.3 | 18.9 | 29.7 |
| Highest Mean Min. Temperature (F) | 25.5 | 27.8 | 29.5 | 32.6 | 38.4 | 44.0 | 48.6 | 46.5 | 40.3 | 33.8 | 28.9 | 26.4 | 31.8 |
| Year Highest Occurred | 1981 | 1963 | 1983 | 1990 | 1987 | 1986 | 1985 | 1983 | 1963 | 1979 | 1965 | 1973 | 1986 |
| Lowest Mean Min. Temperature (F) | 7.1 | 9.0 | 17.9 | 21.3 | 30.2 | 36.1 | 40.3 | 35.7 | 29.4 | 24.9 | 15.4 | 9.3 | 26.9 |
| Year Lowest Occurred | 1979 | 1989 | 1969 | 1975 | 1964 | 1976 | 1963 | 1964 | 1964 | 1969 | 1985 | 1990 | 1964 |
| Mean Precipitation (in.) | 3.39 | 2.41 | 1.96 | 1.11 | 0.93 | 1.00 | 0.65 | 0.79 | 0.80 | 1.38 | 3.08 | 3.76 | 21.26 |
| Highest Precipitation (in.) | 6.39 | 8.29 | 4.96 | 2.81 | 2.65 | 4.72 | 3.64 | 3.73 | 2.67 | 3.79 | 7.68 | 12.61 | 33.72 |
| Year Highest Occurred | 1970 | 1986 | 1989 | 1984 | 1977 | 1982 | 1987 | 1965 | 1982 | 1962 | 1973 | 1964 | 1983 |
| Lowest Precipitation (in.) | 0.12 | 0.32 | 0.00 | 0.06 | 0.17 | 0.05 | 0.00 | 0.00 | 0.00 | 0.00 | 0.27 | 0.12 | 13.58 |
| Year Lowest Occurred | 1985 | 1964 | 1965 | 1977 | 1975 | 1979 | 1988 | 1981 | 1987 | 1988 | 1976 | 1976 | 1976 |
| Heating Degree Days (F) | 1169. | 952. | 936. | 735. | 530. | 284. | 137. | 157. | 356. | 620. | 897. | 1135. | 7908. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 8. | 35. | 33. | 8. | 0. | 0. | 0. | 84. |