| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 47.0 | 51.6 | 55.0 | 59.3 | 65.5 | 72.2 | 79.5 | 80.1 | 74.2 | 64.1 | 53.1 | 47.4 | 62.4 |
| Highest Mean Max. Temperature (F) | 51.9 | 58.6 | 60.2 | 66.2 | 69.8 | 76.7 | 85.7 | 88.5 | 82.6 | 71.6 | 56.6 | 51.8 | 64.8 |
| Year Highest Occurred | 1961 | 1963 | 1986 | 1987 | 1987 | 1987 | 1985 | 1967 | 1974 | 1987 | 1965 | 1980 | 1987 |
| Lowest Mean Max. Temperature (F) | 39.3 | 44.5 | 50.8 | 54.5 | 60.0 | 66.3 | 72.3 | 74.9 | 68.7 | 59.2 | 44.9 | 40.6 | 60.6 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1963 | 1962 | 1980 | 1983 | 1976 | 1985 | 1984 | 1985 | 1990 | 1985 |
| Mean Temperature (F) | 40.7 | 44.1 | 46.8 | 50.1 | 55.2 | 61.1 | 66.3 | 66.7 | 62.1 | 54.8 | 46.7 | 41.5 | 53.0 |
| Highest Mean Temperature (F) | 44.7 | 50.6 | 50.9 | 54.8 | 59.0 | 64.4 | 70.3 | 72.1 | 66.9 | 58.5 | 50.7 | 45.5 | 54.5 |
| Year Highest Occurred | 1986 | 1963 | 1986 | 1987 | 1987 | 1986 | 1985 | 1967 | 1974 | 1988 | 1965 | 1979 | 1987 |
| Lowest Mean Temperature (F) | 32.3 | 36.5 | 43.1 | 46.0 | 51.5 | 57.3 | 62.6 | 64.1 | 58.5 | 51.7 | 39.2 | 34.5 | 51.0 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1975 | 1977 | 1976 | 1963 | 1980 | 1985 | 1971 | 1985 | 1990 | 1985 |
| Mean Min. Temperature (F) | 34.4 | 36.6 | 38.5 | 40.8 | 44.8 | 49.8 | 53.1 | 53.4 | 50.0 | 45.4 | 40.3 | 35.6 | 43.6 |
| Highest Mean Min. Temperature (F) | 39.4 | 42.6 | 42.2 | 44.3 | 48.2 | 52.8 | 56.2 | 56.0 | 55.1 | 49.6 | 44.7 | 39.8 | 44.7 |
| Year Highest Occurred | 1978 | 1963 | 1983 | 1990 | 1987 | 1969 | 1990 | 1990 | 1963 | 1988 | 1965 | 1977 | 1986 |
| Lowest Mean Min. Temperature (F) | 25.2 | 28.5 | 34.7 | 37.3 | 42.2 | 45.7 | 49.7 | 50.1 | 47.4 | 42.8 | 33.4 | 28.4 | 41.3 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1975 | 1964 | 1976 | 1977 | 1980 | 1972 | 1974 | 1985 | 1990 | 1985 |
| Mean Precipitation (in.) | 6.07 | 4.76 | 4.95 | 3.65 | 2.96 | 1.99 | 0.69 | 1.15 | 1.92 | 3.27 | 6.83 | 6.70 | 44.94 |
| Highest Precipitation (in.) | 11.77 | 12.51 | 10.25 | 7.00 | 6.36 | 6.14 | 3.52 | 5.13 | 4.54 | 6.39 | 16.92 | 15.79 | 55.26 |
| Year Highest Occurred | 1966 | 1961 | 1989 | 1979 | 1977 | 1969 | 1987 | 1968 | 1986 | 1990 | 1973 | 1964 | 1983 |
| Lowest Precipitation (in.) | 0.74 | 1.48 | 0.76 | 1.12 | 0.67 | 0.58 | 0.00 | 0.00 | 0.10 | 0.12 | 2.39 | 1.23 | 32.61 |
| Year Lowest Occurred | 1985 | 1964 | 1965 | 1966 | 1982 | 1977 | 1967 | 1988 | 1974 | 1987 | 1976 | 1976 | 1965 |
| Heating Degree Days (F) | 753. | 585. | 564. | 447. | 304. | 136. | 47. | 46. | 120. | 316. | 549. | 729. | 4596. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 19. | 87. | 99. | 33. | 0. | 0. | 0. | 238. |