| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 54.8 | 56.0 | 56.3 | 58.1 | 61.5 | 65.3 | 68.0 | 68.5 | 68.1 | 64.3 | 58.2 | 54.8 | 61.2 |
| Highest Mean Max. Temperature (F) | 58.1 | 60.7 | 59.8 | 61.8 | 64.4 | 68.1 | 71.3 | 71.5 | 71.7 | 67.6 | 62.4 | 60.3 | 62.6 |
| Year Highest Occurred | 1981 | 1963 | 1978 | 1980 | 1970 | 1966 | 1988 | 1984 | 1979 | 1978 | 1979 | 1979 | 1979 |
| Lowest Mean Max. Temperature (F) | 48.9 | 51.0 | 53.4 | 54.8 | 58.6 | 61.8 | 65.1 | 65.3 | 63.6 | 60.3 | 52.8 | 50.0 | 59.8 |
| Year Lowest Occurred | 1969 | 1989 | 1962 | 1967 | 1961 | 1971 | 1982 | 1977 | 1986 | 1984 | 1985 | 1990 | 1971 |
| Mean Temperature (F) | 47.6 | 48.6 | 48.7 | 50.2 | 53.4 | 57.2 | 59.5 | 60.1 | 59.4 | 55.8 | 51.0 | 47.7 | 53.3 |
| Highest Mean Temperature (F) | 51.8 | 54.6 | 52.9 | 54.1 | 55.7 | 59.3 | 61.4 | 61.7 | 63.4 | 58.8 | 54.0 | 51.5 | 54.8 |
| Year Highest Occurred | 1978 | 1963 | 1978 | 1989 | 1987 | 1969 | 1988 | 1971 | 1979 | 1979 | 1967 | 1979 | 1979 |
| Lowest Mean Temperature (F) | 42.7 | 43.2 | 44.1 | 46.7 | 51.3 | 53.9 | 57.8 | 58.0 | 56.4 | 53.4 | 46.2 | 41.6 | 51.7 |
| Year Lowest Occurred | 1969 | 1989 | 1976 | 1975 | 1976 | 1971 | 1982 | 1973 | 1989 | 1984 | 1985 | 1990 | 1971 |
| Mean Min. Temperature (F) | 40.3 | 41.2 | 41.1 | 42.2 | 45.3 | 49.1 | 50.9 | 51.7 | 50.6 | 47.2 | 43.8 | 40.6 | 45.3 |
| Highest Mean Min. Temperature (F) | 46.0 | 48.4 | 45.9 | 46.8 | 48.4 | 52.4 | 53.2 | 54.3 | 55.0 | 51.1 | 47.1 | 45.0 | 47.4 |
| Year Highest Occurred | 1978 | 1963 | 1978 | 1990 | 1987 | 1969 | 1990 | 1990 | 1979 | 1979 | 1965 | 1981 | 1986 |
| Lowest Mean Min. Temperature (F) | 36.2 | 35.3 | 33.5 | 36.8 | 40.1 | 46.0 | 48.2 | 48.3 | 46.8 | 44.0 | 39.6 | 33.1 | 43.4 |
| Year Lowest Occurred | 1963 | 1989 | 1976 | 1976 | 1976 | 1971 | 1970 | 1973 | 1965 | 1974 | 1985 | 1990 | 1976 |
| Mean Precipitation (in.) | 12.02 | 10.31 | 10.75 | 5.98 | 3.82 | 1.61 | 0.47 | 1.18 | 2.42 | 5.73 | 12.64 | 13.46 | 80.39 |
| Highest Precipitation (in.) | 28.40 | 23.68 | 20.31 | 15.67 | 12.53 | 6.68 | 2.90 | 5.69 | 8.74 | 12.07 | 34.48 | 27.46 | 115.60 |
| Year Highest Occurred | 1970 | 1986 | 1961 | 1963 | 1963 | 1985 | 1983 | 1983 | 1977 | 1981 | 1973 | 1981 | 1983 |
| Lowest Precipitation (in.) | 1.01 | 0.92 | 1.42 | 1.28 | 0.13 | 0.16 | 0.00 | 0.00 | 0.00 | 0.07 | 3.29 | 2.21 | 41.79 |
| Year Lowest Occurred | 1985 | 1988 | 1965 | 1973 | 1982 | 1967 | 1976 | 1988 | 1974 | 1978 | 1989 | 1976 | 1976 |
| Heating Degree Days (F) | 539. | 459. | 505. | 444. | 360. | 234. | 171. | 152. | 172. | 285. | 420. | 536. | 4277. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |