| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 46.0 | 49.1 | 51.4 | 55.0 | 59.9 | 64.2 | 68.2 | 69.1 | 67.0 | 59.4 | 50.9 | 46.2 | 57.2 |
| Highest Mean Max. Temperature (F) | 53.9 | 54.9 | 56.0 | 60.7 | 63.9 | 69.2 | 72.2 | 73.9 | 74.0 | 65.6 | 55.3 | 49.9 | 59.6 |
| Year Highest Occurred | 1981 | 1963 | 1981 | 1989 | 1972 | 1978 | 1985 | 1967 | 1974 | 1987 | 1976 | 1976 | 1987 |
| Lowest Mean Max. Temperature (F) | 36.3 | 43.0 | 46.7 | 50.6 | 54.7 | 60.0 | 64.3 | 63.9 | 63.2 | 55.3 | 41.7 | 41.2 | 55.4 |
| Year Lowest Occurred | 1969 | 1989 | 1976 | 1972 | 1962 | 1971 | 1963 | 1980 | 1972 | 1990 | 1985 | 1990 | 1964 |
| Mean Temperature (F) | 39.9 | 42.0 | 43.3 | 46.2 | 50.9 | 55.4 | 58.8 | 59.4 | 56.6 | 50.4 | 44.1 | 40.3 | 48.9 |
| Highest Mean Temperature (F) | 45.3 | 46.7 | 47.3 | 50.4 | 53.7 | 59.2 | 61.4 | 62.6 | 60.8 | 53.6 | 47.8 | 44.5 | 50.4 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1989 | 1972 | 1969 | 1990 | 1967 | 1963 | 1965 | 1987 | 1979 | 1987 |
| Lowest Mean Temperature (F) | 31.4 | 35.0 | 39.3 | 42.7 | 47.8 | 52.5 | 56.7 | 55.4 | 52.5 | 47.8 | 35.0 | 35.2 | 47.2 |
| Year Lowest Occurred | 1969 | 1989 | 1971 | 1972 | 1962 | 1971 | 1963 | 1973 | 1972 | 1983 | 1985 | 1983 | 1985 |
| Mean Min. Temperature (F) | 33.7 | 34.9 | 35.2 | 37.3 | 41.8 | 46.5 | 49.4 | 49.7 | 46.2 | 41.4 | 37.2 | 34.4 | 40.6 |
| Highest Mean Min. Temperature (F) | 38.4 | 38.7 | 40.0 | 41.1 | 44.1 | 51.0 | 51.5 | 52.7 | 50.6 | 46.4 | 40.6 | 39.5 | 42.5 |
| Year Highest Occurred | 1986 | 1961 | 1986 | 1990 | 1983 | 1969 | 1990 | 1990 | 1963 | 1967 | 1983 | 1980 | 1990 |
| Lowest Mean Min. Temperature (F) | 26.5 | 27.0 | 31.5 | 32.7 | 39.6 | 44.0 | 47.3 | 46.5 | 41.8 | 37.1 | 28.3 | 28.5 | 38.0 |
| Year Lowest Occurred | 1969 | 1989 | 1985 | 1982 | 1964 | 1976 | 1977 | 1985 | 1972 | 1983 | 1985 | 1978 | 1985 |
| Mean Precipitation (in.) | 14.37 | 12.59 | 11.48 | 7.51 | 5.40 | 3.12 | 2.57 | 2.54 | 4.88 | 10.52 | 14.74 | 15.46 | 105.18 |
| Highest Precipitation (in.) | 25.23 | 29.80 | 21.86 | 13.89 | 12.45 | 8.50 | 11.02 | 10.12 | 10.93 | 27.17 | 29.14 | 27.82 | 139.90 |
| Year Highest Occurred | 1961 | 1961 | 1974 | 1970 | 1974 | 1981 | 1983 | 1975 | 1969 | 1975 | 1983 | 1979 | 1961 |
| Lowest Precipitation (in.) | 2.17 | 5.02 | 3.81 | 2.94 | 1.05 | 0.40 | 0.36 | 0.30 | 0.13 | 1.37 | 4.41 | 3.63 | 61.19 |
| Year Lowest Occurred | 1985 | 1962 | 1965 | 1973 | 1972 | 1967 | 1985 | 1986 | 1989 | 1987 | 1976 | 1985 | 1985 |
| Heating Degree Days (F) | 778. | 644. | 673. | 564. | 437. | 288. | 192. | 180. | 256. | 453. | 627. | 766. | 5858. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 6. | 0. | 0. | 0. | 0. | 6. |