| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 43.5 | 50.1 | 56.1 | 62.7 | 71.1 | 78.6 | 86.0 | 86.1 | 78.7 | 65.1 | 50.4 | 42.5 | 64.2 |
| Highest Mean Max. Temperature (F) | 52.3 | 58.2 | 62.7 | 74.6 | 77.4 | 86.6 | 91.4 | 96.4 | 89.4 | 74.1 | 56.2 | 49.6 | 67.1 |
| Year Highest Occurred | 1961 | 1963 | 1965 | 1987 | 1969 | 1987 | 1985 | 1967 | 1974 | 1964 | 1967 | 1962 | 1987 |
| Lowest Mean Max. Temperature (F) | 36.4 | 39.9 | 47.3 | 55.3 | 63.8 | 71.8 | 78.4 | 79.2 | 68.9 | 58.6 | 41.7 | 34.4 | 61.3 |
| Year Lowest Occurred | 1969 | 1979 | 1971 | 1970 | 1977 | 1980 | 1983 | 1976 | 1985 | 1984 | 1985 | 1978 | 1971 |
| Mean Temperature (F) | 36.5 | 40.4 | 44.3 | 49.0 | 55.6 | 62.2 | 66.9 | 66.8 | 60.7 | 51.3 | 42.2 | 36.1 | 51.0 |
| Highest Mean Temperature (F) | 42.1 | 47.9 | 48.9 | 56.0 | 60.1 | 67.0 | 69.8 | 71.5 | 66.9 | 56.6 | 46.1 | 40.4 | 53.0 |
| Year Highest Occurred | 1983 | 1963 | 1986 | 1987 | 1969 | 1987 | 1985 | 1986 | 1963 | 1964 | 1962 | 1981 | 1987 |
| Lowest Mean Temperature (F) | 30.6 | 31.8 | 38.6 | 44.0 | 50.5 | 57.3 | 62.8 | 62.7 | 54.6 | 48.0 | 34.4 | 29.4 | 49.0 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1980 | 1963 | 1980 | 1985 | 1984 | 1985 | 1978 | 1971 |
| Mean Min. Temperature (F) | 29.3 | 30.7 | 32.6 | 35.3 | 40.0 | 45.7 | 47.8 | 47.5 | 42.8 | 37.4 | 33.9 | 29.7 | 37.7 |
| Highest Mean Min. Temperature (F) | 35.3 | 37.6 | 35.5 | 40.4 | 44.2 | 49.3 | 50.8 | 52.0 | 48.7 | 43.4 | 37.3 | 34.5 | 39.3 |
| Year Highest Occurred | 1983 | 1963 | 1978 | 1989 | 1987 | 1970 | 1975 | 1990 | 1963 | 1979 | 1963 | 1977 | 1983 |
| Lowest Mean Min. Temperature (F) | 23.9 | 22.4 | 29.5 | 31.3 | 37.0 | 41.9 | 44.5 | 40.6 | 37.7 | 32.9 | 27.0 | 23.3 | 35.6 |
| Year Lowest Occurred | 1977 | 1989 | 1969 | 1982 | 1964 | 1976 | 1962 | 1980 | 1980 | 1974 | 1985 | 1990 | 1985 |
| Mean Precipitation (in.) | 9.98 | 7.76 | 7.10 | 4.94 | 3.58 | 2.56 | 0.80 | 1.39 | 2.93 | 5.20 | 10.51 | 10.66 | 67.41 |
| Highest Precipitation (in.) | 18.69 | 19.07 | 12.37 | 8.84 | 7.92 | 6.76 | 4.37 | 5.03 | 8.58 | 10.01 | 21.06 | 26.94 | 92.20 |
| Year Highest Occurred | 1970 | 1961 | 1989 | 1979 | 1977 | 1984 | 1987 | 1976 | 1986 | 1984 | 1988 | 1964 | 1984 |
| Lowest Precipitation (in.) | 0.86 | 1.91 | 2.01 | 2.29 | 0.93 | 0.55 | 0.00 | 0.00 | 0.00 | 0.14 | 2.91 | 1.52 | 40.65 |
| Year Lowest Occurred | 1985 | 1973 | 1978 | 1987 | 1982 | 1977 | 1970 | 1988 | 1975 | 1987 | 1976 | 1985 | 1985 |
| Heating Degree Days (F) | 884. | 689. | 642. | 480. | 295. | 125. | 27. | 51. | 174. | 425. | 684. | 896. | 5372. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 41. | 86. | 107. | 45. | 0. | 0. | 0. | 279. |