| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 33.2 | 40.5 | 50.8 | 61.1 | 70.2 | 79.3 | 86.5 | 86.3 | 75.8 | 61.1 | 44.0 | 34.1 | 60.2 |
| Highest Mean Max. Temperature (F) | 41.1 | 47.7 | 56.1 | 67.1 | 76.0 | 86.4 | 98.1 | 94.6 | 84.3 | 69.1 | 48.6 | 40.6 | 63.1 |
| Year Highest Occurred | 1967 | 1967 | 1981 | 1977 | 1987 | 1986 | 1985 | 1967 | 1967 | 1988 | 1990 | 1973 | 1987 |
| Lowest Mean Max. Temperature (F) | 21.5 | 32.4 | 42.8 | 54.4 | 64.4 | 71.5 | 80.3 | 78.3 | 66.4 | 57.1 | 31.0 | 24.8 | 58.0 |
| Year Lowest Occurred | 1979 | 1989 | 1975 | 1970 | 1974 | 1971 | 1983 | 1976 | 1986 | 1968 | 1985 | 1985 | 1975 |
| Mean Temperature (F) | 27.4 | 33.5 | 41.3 | 49.6 | 57.9 | 66.3 | 72.5 | 72.2 | 62.7 | 50.7 | 37.9 | 28.9 | 50.1 |
| Highest Mean Temperature (F) | 35.5 | 39.2 | 45.0 | 54.3 | 62.1 | 71.8 | 81.0 | 77.6 | 69.3 | 56.5 | 42.1 | 35.7 | 52.6 |
| Year Highest Occurred | 1967 | 1967 | 1981 | 1987 | 1969 | 1986 | 1985 | 1967 | 1967 | 1988 | 1983 | 1973 | 1987 |
| Lowest Mean Temperature (F) | 14.3 | 25.1 | 35.6 | 45.2 | 53.6 | 61.0 | 67.1 | 66.2 | 55.8 | 47.2 | 23.6 | 19.8 | 47.4 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1970 | 1984 | 1971 | 1983 | 1976 | 1986 | 1984 | 1985 | 1983 | 1985 |
| Mean Min. Temperature (F) | 21.6 | 26.5 | 31.7 | 38.1 | 45.6 | 53.2 | 58.4 | 58.0 | 49.7 | 40.2 | 31.9 | 23.7 | 39.9 |
| Highest Mean Min. Temperature (F) | 30.2 | 32.7 | 36.2 | 42.4 | 48.5 | 58.2 | 63.9 | 62.1 | 54.3 | 44.0 | 36.5 | 30.7 | 42.0 |
| Year Highest Occurred | 1981 | 1961 | 1983 | 1988 | 1969 | 1969 | 1985 | 1971 | 1967 | 1979 | 1983 | 1973 | 1987 |
| Lowest Mean Min. Temperature (F) | 7.0 | 17.1 | 26.1 | 33.2 | 41.7 | 48.9 | 53.8 | 54.0 | 44.1 | 35.6 | 16.2 | 13.7 | 36.5 |
| Year Lowest Occurred | 1979 | 1985 | 1985 | 1982 | 1984 | 1981 | 1983 | 1976 | 1970 | 1984 | 1985 | 1984 | 1985 |
| Mean Precipitation (in.) | 0.95 | 0.90 | 0.85 | 0.78 | 1.13 | 0.75 | 0.50 | 0.54 | 0.54 | 0.57 | 1.36 | 1.53 | 10.40 |
| Highest Precipitation (in.) | 2.43 | 3.12 | 2.64 | 1.68 | 3.32 | 2.62 | 1.71 | 1.71 | 2.08 | 1.41 | 3.95 | 3.20 | 18.00 |
| Year Highest Occurred | 1970 | 1980 | 1983 | 1969 | 1980 | 1984 | 1965 | 1968 | 1986 | 1975 | 1973 | 1964 | 1980 |
| Lowest Precipitation (in.) | 0.25 | 0.03 | 0.04 | 0.00 | 0.17 | 0.05 | 0.00 | 0.00 | 0.00 | 0.00 | 0.13 | 0.26 | 6.96 |
| Year Lowest Occurred | 1963 | 1988 | 1969 | 1985 | 1965 | 1986 | 1988 | 1988 | 1990 | 1978 | 1976 | 1976 | 1967 |
| Heating Degree Days (F) | 1166. | 882. | 735. | 462. | 229. | 78. | 14. | 20. | 153. | 443. | 813. | 1119. | 6114. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 9. | 117. | 247. | 243. | 84. | 0. | 0. | 0. | 700. |