| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 45.0 | 50.5 | 55.1 | 60.2 | 66.7 | 72.6 | 78.4 | 78.9 | 73.4 | 62.9 | 51.0 | 44.6 | 61.6 |
| Highest Mean Max. Temperature (F) | 51.0 | 57.4 | 60.4 | 65.6 | 71.4 | 77.7 | 86.6 | 88.0 | 80.8 | 71.2 | 54.4 | 48.6 | 64.6 |
| Year Highest Occurred | 1961 | 1968 | 1986 | 1989 | 1969 | 1987 | 1985 | 1967 | 1967 | 1987 | 1981 | 1980 | 1987 |
| Lowest Mean Max. Temperature (F) | 36.5 | 43.9 | 49.4 | 55.6 | 59.2 | 66.3 | 71.8 | 72.1 | 66.9 | 58.3 | 42.7 | 38.9 | 58.4 |
| Year Lowest Occurred | 1969 | 1989 | 1971 | 1972 | 1962 | 1980 | 1963 | 1964 | 1978 | 1975 | 1985 | 1990 | 1964 |
| Mean Temperature (F) | 38.6 | 42.2 | 45.3 | 49.0 | 54.6 | 59.9 | 64.1 | 64.3 | 59.7 | 51.8 | 44.1 | 39.1 | 51.1 |
| Highest Mean Temperature (F) | 43.1 | 46.9 | 49.2 | 53.4 | 57.6 | 64.6 | 68.6 | 69.1 | 64.5 | 55.8 | 47.3 | 43.7 | 52.4 |
| Year Highest Occurred | 1961 | 1963 | 1986 | 1990 | 1969 | 1969 | 1985 | 1977 | 1990 | 1988 | 1965 | 1979 | 1990 |
| Lowest Mean Temperature (F) | 31.1 | 35.2 | 41.1 | 45.0 | 50.3 | 55.6 | 60.9 | 59.2 | 56.1 | 49.0 | 35.6 | 33.3 | 49.1 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1962 | 1971 | 1986 | 1973 | 1972 | 1985 | 1985 | 1990 | 1964 |
| Mean Min. Temperature (F) | 32.2 | 33.9 | 35.4 | 37.8 | 42.4 | 47.2 | 49.8 | 49.6 | 46.0 | 40.7 | 37.2 | 33.4 | 40.5 |
| Highest Mean Min. Temperature (F) | 37.2 | 38.7 | 40.7 | 43.2 | 45.5 | 53.4 | 53.1 | 54.0 | 52.1 | 47.0 | 41.5 | 38.9 | 42.6 |
| Year Highest Occurred | 1983 | 1961 | 1983 | 1990 | 1990 | 1969 | 1983 | 1977 | 1990 | 1988 | 1983 | 1979 | 1990 |
| Lowest Mean Min. Temperature (F) | 23.4 | 26.4 | 30.9 | 33.9 | 39.7 | 43.4 | 46.8 | 43.7 | 40.4 | 36.2 | 28.5 | 26.9 | 38.0 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1967 | 1966 | 1987 | 1988 | 1973 | 1988 | 1972 | 1985 | 1985 | 1985 |
| Mean Precipitation (in.) | 6.73 | 4.91 | 4.87 | 3.27 | 2.35 | 2.07 | 0.83 | 1.38 | 2.25 | 3.66 | 6.06 | 6.76 | 45.14 |
| Highest Precipitation (in.) | 14.20 | 10.22 | 8.14 | 5.35 | 5.59 | 4.40 | 2.36 | 5.38 | 5.06 | 7.43 | 11.88 | 10.85 | 59.01 |
| Year Highest Occurred | 1964 | 1961 | 1974 | 1974 | 1984 | 1984 | 1963 | 1968 | 1969 | 1975 | 1984 | 1971 | 1975 |
| Lowest Precipitation (in.) | 0.35 | 1.51 | 0.80 | 0.93 | 0.08 | 0.46 | 0.00 | 0.10 | 0.05 | 0.44 | 0.86 | 1.98 | 31.35 |
| Year Lowest Occurred | 1985 | 1973 | 1965 | 1977 | 1982 | 1987 | 1973 | 1973 | 1975 | 1987 | 1976 | 1985 | 1985 |
| Heating Degree Days (F) | 818. | 638. | 611. | 480. | 322. | 170. | 74. | 94. | 175. | 409. | 627. | 803. | 5221. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 17. | 46. | 72. | 16. | 0. | 0. | 0. | 151. |