| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 49.6 | 50.1 | 50.0 | 55.6 | 64.1 | 72.7 | 79.1 | 78.4 | 73.7 | 65.9 | 54.1 | 49.7 | 61.9 |
| Highest Mean Max. Temperature (F) | 56.1 | 56.2 | 59.8 | 66.6 | 70.6 | 79.4 | 86.1 | 86.0 | 80.9 | 75.6 | 63.8 | 58.5 | 65.4 |
| Year Highest Occurred | 1976 | 1988 | 1972 | 1989 | 1984 | 1981 | 1988 | 1967 | 1988 | 1988 | 1976 | 1980 | 1988 |
| Lowest Mean Max. Temperature (F) | 43.7 | 40.1 | 43.4 | 39.3 | 53.8 | 66.3 | 71.0 | 70.0 | 64.0 | 58.9 | 46.6 | 40.5 | 59.9 |
| Year Lowest Occurred | 1979 | 1969 | 1973 | 1967 | 1977 | 1980 | 1987 | 1976 | 1985 | 1972 | 1973 | 1987 | 1964 |
| Mean Temperature (F) | 43.5 | 43.7 | 43.2 | 47.8 | 55.4 | 63.9 | 71.1 | 70.5 | 65.4 | 58.4 | 47.7 | 43.5 | 54.5 |
| Highest Mean Temperature (F) | 49.5 | 49.6 | 51.6 | 58.8 | 62.1 | 69.1 | 77.7 | 78.5 | 71.4 | 66.6 | 56.9 | 52.2 | 57.4 |
| Year Highest Occurred | 1961 | 1988 | 1972 | 1989 | 1984 | 1981 | 1988 | 1967 | 1975 | 1988 | 1976 | 1980 | 1988 |
| Lowest Mean Temperature (F) | 38.1 | 34.7 | 37.3 | 33.8 | 45.6 | 57.7 | 63.5 | 61.8 | 55.4 | 51.6 | 40.7 | 35.4 | 52.4 |
| Year Lowest Occurred | 1973 | 1969 | 1973 | 1967 | 1977 | 1965 | 1987 | 1976 | 1986 | 1984 | 1973 | 1971 | 1964 |
| Mean Min. Temperature (F) | 37.4 | 37.2 | 36.3 | 39.8 | 46.6 | 55.0 | 63.0 | 62.6 | 57.0 | 50.9 | 41.2 | 37.4 | 47.0 |
| Highest Mean Min. Temperature (F) | 44.0 | 42.9 | 43.8 | 50.9 | 53.5 | 61.4 | 69.3 | 70.9 | 63.7 | 57.6 | 49.9 | 46.7 | 49.5 |
| Year Highest Occurred | 1961 | 1988 | 1986 | 1989 | 1984 | 1985 | 1988 | 1967 | 1975 | 1978 | 1976 | 1989 | 1988 |
| Lowest Mean Min. Temperature (F) | 32.4 | 29.3 | 31.1 | 28.2 | 37.4 | 47.0 | 56.0 | 53.5 | 46.7 | 44.0 | 34.8 | 29.9 | 44.8 |
| Year Lowest Occurred | 1973 | 1969 | 1973 | 1967 | 1977 | 1965 | 1987 | 1976 | 1986 | 1984 | 1973 | 1971 | 1982 |
| Mean Precipitation (in.) | 3.37 | 3.17 | 3.34 | 1.92 | 0.55 | 0.14 | 0.05 | 0.09 | 0.40 | 1.29 | 3.39 | 3.12 | 20.83 |
| Highest Precipitation (in.) | 7.55 | 7.72 | 7.39 | 6.24 | 3.49 | 0.66 | 0.50 | 0.95 | 1.73 | 3.59 | 9.76 | 11.51 | 43.44 |
| Year Highest Occurred | 1970 | 1983 | 1982 | 1967 | 1990 | 1964 | 1980 | 1976 | 1986 | 1979 | 1983 | 1964 | 1983 |
| Lowest Precipitation (in.) | 0.24 | 0.11 | 0.25 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.34 | 0.04 | 11.17 |
| Year Lowest Occurred | 1976 | 1967 | 1972 | 1977 | 1987 | 1990 | 1990 | 1990 | 1987 | 1988 | 1980 | 1989 | 1976 |
| Heating Degree Days (F) | 667. | 596. | 676. | 533. | 326. | 123. | 35. | 35. | 116. | 253. | 519. | 667. | 4546. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 17. | 28. | 90. | 224. | 205. | 128. | 48. | 0. | 0. | 740. |