| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 50.1 | 55.1 | 59.5 | 64.9 | 71.7 | 79.3 | 86.8 | 87.3 | 83.0 | 70.6 | 55.9 | 49.6 | 67.8 |
| Highest Mean Max. Temperature (F) | 54.2 | 61.6 | 65.2 | 72.3 | 77.4 | 84.1 | 90.8 | 96.2 | 91.1 | 77.5 | 61.0 | 53.8 | 69.6 |
| Year Highest Occurred | 1981 | 1963 | 1988 | 1962 | 1973 | 1985 | 1970 | 1967 | 1974 | 1987 | 1976 | 1981 | 1970 |
| Lowest Mean Max. Temperature (F) | 47.5 | 48.7 | 55.4 | 54.1 | 64.7 | 72.3 | 77.4 | 80.4 | 73.9 | 63.0 | 51.3 | 42.9 | 65.5 |
| Year Lowest Occurred | 1982 | 1989 | 1985 | 1967 | 1977 | 1980 | 1987 | 1976 | 1986 | 1984 | 1985 | 1990 | 1989 |
| Mean Temperature (F) | 43.4 | 46.6 | 49.4 | 52.9 | 58.5 | 64.7 | 69.8 | 70.1 | 66.2 | 57.7 | 48.4 | 43.4 | 55.9 |
| Highest Mean Temperature (F) | 47.8 | 53.9 | 54.1 | 57.4 | 62.0 | 67.8 | 72.1 | 75.1 | 70.5 | 62.5 | 52.5 | 48.2 | 57.1 |
| Year Highest Occurred | 1978 | 1963 | 1986 | 1966 | 1973 | 1961 | 1990 | 1967 | 1967 | 1987 | 1967 | 1981 | 1981 |
| Lowest Mean Temperature (F) | 40.5 | 40.9 | 45.6 | 46.0 | 52.9 | 60.2 | 64.7 | 66.2 | 61.2 | 54.0 | 43.4 | 35.5 | 54.3 |
| Year Lowest Occurred | 1963 | 1989 | 1977 | 1967 | 1977 | 1980 | 1987 | 1976 | 1986 | 1984 | 1985 | 1990 | 1989 |
| Mean Min. Temperature (F) | 36.6 | 38.2 | 39.3 | 40.9 | 45.2 | 50.0 | 52.8 | 52.9 | 49.3 | 44.8 | 40.8 | 37.2 | 44.0 |
| Highest Mean Min. Temperature (F) | 42.7 | 46.1 | 44.1 | 45.2 | 48.9 | 52.9 | 55.2 | 55.7 | 52.9 | 48.5 | 44.9 | 42.6 | 46.1 |
| Year Highest Occurred | 1978 | 1963 | 1978 | 1990 | 1987 | 1969 | 1990 | 1983 | 1979 | 1963 | 1981 | 1981 | 1983 |
| Lowest Mean Min. Temperature (F) | 31.9 | 33.0 | 34.6 | 36.4 | 41.1 | 45.2 | 50.7 | 50.0 | 46.2 | 41.1 | 35.5 | 28.1 | 41.1 |
| Year Lowest Occurred | 1962 | 1989 | 1977 | 1975 | 1977 | 1976 | 1975 | 1975 | 1970 | 1976 | 1985 | 1990 | 1976 |
| Mean Precipitation (in.) | 12.56 | 10.10 | 9.48 | 4.40 | 1.68 | 0.39 | 0.09 | 0.57 | 1.35 | 4.50 | 10.90 | 12.57 | 68.59 |
| Highest Precipitation (in.) | 31.29 | 31.09 | 23.46 | 14.48 | 12.74 | 2.94 | 1.02 | 4.38 | 7.80 | 13.89 | 31.13 | 39.86 | 127.84 |
| Year Highest Occurred | 1970 | 1986 | 1983 | 1982 | 1990 | 1988 | 1974 | 1983 | 1986 | 1962 | 1973 | 1964 | 1983 |
| Lowest Precipitation (in.) | 0.82 | 0.13 | 1.10 | 0.41 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.15 | 0.34 | 29.80 |
| Year Lowest Occurred | 1985 | 1988 | 1988 | 1968 | 1982 | 1979 | 1989 | 1988 | 1988 | 1978 | 1990 | 1989 | 1976 |
| Heating Degree Days (F) | 670. | 515. | 484. | 367. | 209. | 61. | 13. | 6. | 51. | 233. | 498. | 670. | 3777. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 7. | 52. | 162. | 164. | 87. | 6. | 0. | 0. | 478. |