| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 37.6 | 39.1 | 46.4 | 56.1 | 66.2 | 75.4 | 81.3 | 80.6 | 73.6 | 63.7 | 53.0 | 42.1 | 59.6 |
| Highest Mean Max. Temperature (F) | 46.5 | 46.9 | 53.1 | 61.3 | 71.8 | 79.2 | 85.2 | 85.5 | 78.3 | 69.6 | 62.4 | 49.7 | 63.9 |
| Year Highest Occurred | 1975 | 1976 | 1973 | 1976 | 1975 | 1973 | 1974 | 1973 | 1961 | 1971 | 1975 | 1990 | 1975 |
| Lowest Mean Max. Temperature (F) | 29.6 | 28.3 | 38.9 | 52.6 | 60.3 | 68.4 | 78.0 | 75.7 | 69.7 | 58.1 | 47.4 | 28.5 | 57.8 |
| Year Lowest Occurred | 1981 | 1979 | 1984 | 1984 | 1967 | 1985 | 1986 | 1982 | 1963 | 1981 | 1976 | 1989 | 1982 |
| Mean Temperature (F) | 30.6 | 31.8 | 39.2 | 48.2 | 58.1 | 67.3 | 73.5 | 72.9 | 65.7 | 55.7 | 46.1 | 35.1 | 52.0 |
| Highest Mean Temperature (F) | 39.8 | 38.2 | 46.2 | 51.9 | 63.7 | 71.9 | 77.4 | 77.5 | 70.6 | 61.8 | 55.0 | 41.8 | 56.4 |
| Year Highest Occurred | 1975 | 1976 | 1973 | 1976 | 1975 | 1973 | 1975 | 1973 | 1971 | 1971 | 1975 | 1973 | 1975 |
| Lowest Mean Temperature (F) | 21.6 | 22.7 | 32.6 | 45.0 | 52.9 | 61.6 | 70.6 | 68.1 | 61.6 | 50.4 | 40.5 | 20.4 | 49.9 |
| Year Lowest Occurred | 1981 | 1979 | 1984 | 1982 | 1967 | 1985 | 1986 | 1982 | 1978 | 1988 | 1976 | 1989 | 1982 |
| Mean Min. Temperature (F) | 23.4 | 24.5 | 32.1 | 40.4 | 50.0 | 59.0 | 65.7 | 65.1 | 57.7 | 47.7 | 39.1 | 28.0 | 44.4 |
| Highest Mean Min. Temperature (F) | 33.1 | 30.0 | 39.2 | 43.8 | 55.5 | 64.5 | 70.1 | 69.5 | 63.0 | 53.9 | 47.6 | 34.6 | 48.9 |
| Year Highest Occurred | 1975 | 1984 | 1973 | 1973 | 1975 | 1973 | 1975 | 1973 | 1971 | 1971 | 1975 | 1974 | 1975 |
| Lowest Mean Min. Temperature (F) | 13.6 | 17.0 | 26.3 | 35.8 | 45.5 | 54.7 | 62.5 | 60.4 | 52.9 | 42.5 | 33.6 | 12.2 | 42.1 |
| Year Lowest Occurred | 1981 | 1979 | 1984 | 1982 | 1967 | 1985 | 1962 | 1982 | 1978 | 1988 | 1976 | 1989 | 1982 |
| Mean Precipitation (in.) | 4.28 | 3.93 | 4.15 | 4.12 | 3.69 | 3.58 | 3.10 | 4.19 | 3.39 | 3.53 | 4.62 | 4.76 | 47.34 |
| Highest Precipitation (in.) | 11.29 | 7.26 | 8.89 | 9.60 | 8.91 | 10.03 | 8.12 | 14.72 | 8.54 | 6.52 | 8.95 | 11.70 | 71.52 |
| Year Highest Occurred | 1978 | 1971 | 1968 | 1983 | 1967 | 1972 | 1990 | 1985 | 1972 | 1989 | 1988 | 1969 | 1972 |
| Lowest Precipitation (in.) | 1.14 | 1.38 | 0.73 | 1.23 | 0.32 | 0.67 | 0.11 | 0.84 | 0.78 | 1.28 | 1.29 | 1.22 | 21.87 |
| Year Lowest Occurred | 1970 | 1987 | 1962 | 1976 | 1964 | 1961 | 1970 | 1964 | 1980 | 1963 | 1964 | 1965 | 1965 |
| Heating Degree Days (F) | 1066. | 930. | 800. | 504. | 223. | 38. | 0. | 8. | 64. | 299. | 567. | 927. | 5426. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 9. | 107. | 264. | 253. | 85. | 11. | 0. | 0. | 729. |