| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 54.1 | 55.3 | 56.0 | 58.0 | 61.6 | 65.2 | 68.2 | 69.3 | 68.6 | 64.2 | 57.7 | 54.1 | 61.0 |
| Highest Mean Max. Temperature (F) | 60.9 | 60.1 | 60.3 | 61.9 | 65.2 | 68.3 | 70.9 | 72.0 | 73.3 | 67.2 | 62.0 | 58.2 | 62.8 |
| Year Highest Occurred | 1981 | 1963 | 1978 | 1989 | 1987 | 1968 | 1967 | 1967 | 1979 | 1987 | 1976 | 1980 | 1981 |
| Lowest Mean Max. Temperature (F) | 48.2 | 49.8 | 50.7 | 54.1 | 57.9 | 61.5 | 65.4 | 66.8 | 66.0 | 60.8 | 53.6 | 49.2 | 59.1 |
| Year Lowest Occurred | 1969 | 1989 | 1971 | 1967 | 1964 | 1964 | 1962 | 1975 | 1987 | 1975 | 1985 | 1990 | 1971 |
| Mean Temperature (F) | 46.6 | 47.9 | 48.3 | 49.6 | 53.2 | 57.2 | 59.8 | 60.6 | 59.5 | 55.3 | 50.4 | 47.0 | 53.0 |
| Highest Mean Temperature (F) | 51.8 | 53.3 | 52.3 | 53.6 | 56.9 | 59.6 | 62.3 | 62.9 | 64.2 | 58.7 | 53.3 | 51.1 | 54.8 |
| Year Highest Occurred | 1981 | 1963 | 1978 | 1989 | 1987 | 1968 | 1990 | 1983 | 1979 | 1979 | 1976 | 1979 | 1983 |
| Lowest Mean Temperature (F) | 42.8 | 42.2 | 43.7 | 46.1 | 49.1 | 54.6 | 57.1 | 57.1 | 56.9 | 51.9 | 45.6 | 41.2 | 51.1 |
| Year Lowest Occurred | 1969 | 1989 | 1971 | 1967 | 1964 | 1971 | 1962 | 1973 | 1970 | 1970 | 1985 | 1990 | 1971 |
| Mean Min. Temperature (F) | 39.1 | 40.6 | 40.6 | 41.3 | 44.7 | 49.2 | 51.3 | 51.8 | 50.3 | 46.3 | 43.0 | 39.8 | 44.8 |
| Highest Mean Min. Temperature (F) | 44.4 | 46.5 | 45.0 | 45.3 | 48.5 | 51.7 | 54.0 | 54.5 | 55.1 | 51.5 | 46.5 | 44.1 | 47.3 |
| Year Highest Occurred | 1978 | 1963 | 1983 | 1989 | 1987 | 1981 | 1983 | 1983 | 1979 | 1979 | 1983 | 1981 | 1983 |
| Lowest Mean Min. Temperature (F) | 33.7 | 34.6 | 36.6 | 37.4 | 40.2 | 46.9 | 48.4 | 45.3 | 44.6 | 41.8 | 37.1 | 33.2 | 43.0 |
| Year Lowest Occurred | 1963 | 1989 | 1971 | 1970 | 1964 | 1972 | 1973 | 1969 | 1970 | 1974 | 1978 | 1990 | 1971 |
| Mean Precipitation (in.) | 11.25 | 8.97 | 9.66 | 5.30 | 3.60 | 1.93 | 0.61 | 1.36 | 2.10 | 5.23 | 11.28 | 12.13 | 73.42 |
| Highest Precipitation (in.) | 21.79 | 19.21 | 16.72 | 12.89 | 10.07 | 4.69 | 3.39 | 7.34 | 7.84 | 12.10 | 30.50 | 24.37 | 99.75 |
| Year Highest Occurred | 1970 | 1986 | 1961 | 1963 | 1963 | 1985 | 1983 | 1968 | 1986 | 1975 | 1973 | 1981 | 1983 |
| Lowest Precipitation (in.) | 1.20 | 1.83 | 1.42 | 1.38 | 0.11 | 0.27 | 0.00 | 0.00 | 0.01 | 0.32 | 3.40 | 2.24 | 45.96 |
| Year Lowest Occurred | 1985 | 1988 | 1965 | 1968 | 1982 | 1967 | 1977 | 1988 | 1965 | 1978 | 1989 | 1976 | 1976 |
| Heating Degree Days (F) | 570. | 479. | 518. | 462. | 366. | 234. | 164. | 141. | 169. | 301. | 438. | 558. | 4400. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |