| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 46.2 | 48.6 | 50.4 | 56.4 | 65.7 | 75.2 | 82.2 | 81.3 | 75.6 | 65.7 | 51.2 | 45.5 | 62.0 |
| Highest Mean Max. Temperature (F) | 53.7 | 56.4 | 57.0 | 67.7 | 74.2 | 84.0 | 87.9 | 89.1 | 84.0 | 73.8 | 60.4 | 54.2 | 64.6 |
| Year Highest Occurred | 1961 | 1977 | 1984 | 1987 | 1984 | 1977 | 1984 | 1981 | 1974 | 1988 | 1976 | 1962 | 1981 |
| Lowest Mean Max. Temperature (F) | 40.5 | 37.3 | 45.8 | 39.6 | 54.2 | 67.7 | 77.1 | 72.0 | 65.5 | 57.3 | 42.7 | 38.2 | 58.2 |
| Year Lowest Occurred | 1969 | 1969 | 1975 | 1967 | 1977 | 1964 | 1963 | 1968 | 1986 | 1984 | 1973 | 1987 | 1971 |
| Mean Temperature (F) | 35.1 | 36.7 | 38.3 | 42.7 | 50.6 | 58.8 | 64.3 | 63.6 | 58.8 | 50.8 | 40.0 | 34.9 | 47.9 |
| Highest Mean Temperature (F) | 40.8 | 44.3 | 43.2 | 50.5 | 56.1 | 65.9 | 68.7 | 67.0 | 64.4 | 56.8 | 45.8 | 42.4 | 49.5 |
| Year Highest Occurred | 1961 | 1963 | 1978 | 1987 | 1984 | 1977 | 1984 | 1964 | 1975 | 1988 | 1976 | 1962 | 1988 |
| Lowest Mean Temperature (F) | 28.7 | 29.3 | 34.1 | 30.3 | 43.4 | 54.6 | 60.9 | 58.1 | 51.4 | 45.0 | 34.3 | 27.5 | 45.4 |
| Year Lowest Occurred | 1973 | 1969 | 1973 | 1967 | 1977 | 1980 | 1987 | 1968 | 1986 | 1984 | 1985 | 1972 | 1971 |
| Mean Min. Temperature (F) | 24.1 | 24.7 | 26.1 | 29.0 | 35.4 | 42.4 | 46.3 | 45.8 | 41.9 | 35.8 | 28.7 | 24.2 | 33.7 |
| Highest Mean Min. Temperature (F) | 29.1 | 33.8 | 31.6 | 34.5 | 39.6 | 47.7 | 52.6 | 52.7 | 48.3 | 40.3 | 33.0 | 30.6 | 35.7 |
| Year Highest Occurred | 1986 | 1963 | 1978 | 1990 | 1966 | 1977 | 1964 | 1964 | 1975 | 1964 | 1967 | 1962 | 1988 |
| Lowest Mean Min. Temperature (F) | 16.3 | 18.5 | 21.6 | 21.0 | 31.9 | 38.6 | 40.8 | 41.2 | 35.8 | 31.6 | 22.7 | 15.1 | 30.6 |
| Year Lowest Occurred | 1973 | 1990 | 1973 | 1967 | 1983 | 1980 | 1983 | 1973 | 1973 | 1973 | 1982 | 1972 | 1982 |
| Mean Precipitation (in.) | 12.40 | 10.50 | 10.30 | 5.56 | 2.61 | 0.98 | 0.36 | 0.70 | 1.59 | 4.55 | 10.54 | 11.36 | 71.45 |
| Highest Precipitation (in.) | 34.88 | 42.88 | 25.32 | 16.51 | 9.43 | 2.64 | 6.41 | 3.78 | 9.26 | 23.22 | 27.73 | 47.39 | 134.03 |
| Year Highest Occurred | 1969 | 1986 | 1989 | 1963 | 1990 | 1971 | 1974 | 1976 | 1986 | 1962 | 1973 | 1964 | 1983 |
| Lowest Precipitation (in.) | 0.79 | 0.80 | 1.84 | 0.56 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.12 | 0.00 | 24.77 |
| Year Lowest Occurred | 1984 | 1964 | 1988 | 1968 | 1976 | 1986 | 1989 | 1988 | 1980 | 1966 | 1986 | 1989 | 1976 |
| Heating Degree Days (F) | 927. | 792. | 828. | 669. | 446. | 206. | 73. | 96. | 210. | 446. | 750. | 933. | 6376. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 20. | 51. | 53. | 24. | 5. | 0. | 0. | 153. |