| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 47.3 | 51.3 | 54.2 | 56.9 | 61.6 | 65.8 | 69.6 | 70.9 | 69.5 | 61.6 | 52.5 | 47.1 | 59.0 |
| Highest Mean Max. Temperature (F) | 53.3 | 58.3 | 60.0 | 64.1 | 66.9 | 69.1 | 73.6 | 77.2 | 74.2 | 66.6 | 54.8 | 51.8 | 60.6 |
| Year Highest Occurred | 1961 | 1968 | 1965 | 1989 | 1969 | 1961 | 1988 | 1967 | 1989 | 1987 | 1965 | 1979 | 1967 |
| Lowest Mean Max. Temperature (F) | 40.9 | 43.3 | 50.4 | 53.2 | 57.2 | 61.3 | 66.6 | 67.1 | 64.7 | 57.2 | 44.1 | 41.9 | 57.2 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1971 | 1963 | 1975 | 1977 | 1975 | 1985 | 1990 | 1971 |
| Mean Temperature (F) | 41.7 | 44.5 | 46.2 | 48.2 | 52.4 | 56.7 | 59.6 | 60.6 | 59.0 | 53.1 | 46.4 | 41.8 | 50.9 |
| Highest Mean Temperature (F) | 46.5 | 50.2 | 50.2 | 53.8 | 55.8 | 60.4 | 61.9 | 63.8 | 62.4 | 56.3 | 49.4 | 46.2 | 52.2 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1989 | 1969 | 1969 | 1978 | 1967 | 1979 | 1978 | 1965 | 1979 | 1983 |
| Lowest Mean Temperature (F) | 35.1 | 36.9 | 43.0 | 44.5 | 49.7 | 53.9 | 56.5 | 58.0 | 55.7 | 49.8 | 38.6 | 36.0 | 48.7 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1975 | 1962 | 1984 | 1987 | 1973 | 1986 | 1972 | 1985 | 1990 | 1985 |
| Mean Min. Temperature (F) | 36.0 | 37.6 | 38.2 | 39.3 | 43.1 | 47.5 | 49.6 | 50.2 | 48.4 | 44.6 | 40.3 | 36.4 | 42.6 |
| Highest Mean Min. Temperature (F) | 40.2 | 43.5 | 41.8 | 43.5 | 45.6 | 53.2 | 52.6 | 53.3 | 51.9 | 49.1 | 43.9 | 41.7 | 44.2 |
| Year Highest Occurred | 1983 | 1963 | 1983 | 1989 | 1987 | 1969 | 1978 | 1977 | 1979 | 1988 | 1965 | 1973 | 1983 |
| Lowest Mean Min. Temperature (F) | 29.2 | 30.4 | 34.3 | 35.4 | 40.1 | 45.1 | 45.7 | 43.8 | 42.4 | 39.5 | 33.1 | 30.0 | 39.9 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1967 | 1982 | 1976 | 1987 | 1984 | 1984 | 1972 | 1985 | 1990 | 1985 |
| Mean Precipitation (in.) | 14.88 | 11.11 | 11.11 | 6.77 | 4.84 | 3.69 | 1.68 | 1.92 | 3.91 | 7.58 | 14.25 | 15.55 | 97.29 |
| Highest Precipitation (in.) | 26.21 | 22.47 | 17.50 | 11.01 | 9.73 | 9.29 | 5.78 | 8.00 | 10.38 | 15.37 | 27.02 | 25.99 | 130.29 |
| Year Highest Occurred | 1965 | 1961 | 1987 | 1972 | 1988 | 1969 | 1983 | 1968 | 1971 | 1975 | 1973 | 1971 | 1971 |
| Lowest Precipitation (in.) | 1.47 | 2.89 | 2.46 | 2.19 | 1.62 | 0.98 | 0.07 | 0.09 | 0.06 | 0.72 | 3.25 | 4.28 | 71.21 |
| Year Lowest Occurred | 1985 | 1973 | 1965 | 1977 | 1982 | 1965 | 1967 | 1967 | 1975 | 1987 | 1976 | 1976 | 1976 |
| Heating Degree Days (F) | 722. | 574. | 583. | 504. | 391. | 249. | 170. | 141. | 186. | 369. | 558. | 719. | 5166. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 6. | 0. | 0. | 0. | 6. |