| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 47.0 | 53.4 | 57.5 | 64.8 | 74.5 | 83.4 | 91.1 | 90.3 | 84.0 | 73.2 | 56.1 | 46.8 | 68.5 |
| Highest Mean Max. Temperature (F) | 52.6 | 61.5 | 63.9 | 74.9 | 81.6 | 89.8 | 95.8 | 96.2 | 90.6 | 84.3 | 63.6 | 54.8 | 71.9 |
| Year Highest Occurred | 1986 | 1988 | 1988 | 1987 | 1969 | 1987 | 1988 | 1967 | 1974 | 1988 | 1990 | 1976 | 1988 |
| Lowest Mean Max. Temperature (F) | 39.6 | 44.6 | 51.4 | 49.3 | 64.1 | 77.5 | 84.0 | 80.7 | 75.0 | 65.7 | 50.0 | 39.7 | 65.7 |
| Year Lowest Occurred | 1972 | 1969 | 1983 | 1967 | 1977 | 1980 | 1983 | 1976 | 1986 | 1984 | 1964 | 1971 | 1983 |
| Mean Temperature (F) | 34.4 | 39.4 | 43.2 | 47.9 | 55.3 | 62.4 | 66.9 | 65.9 | 60.3 | 52.0 | 42.2 | 34.8 | 50.4 |
| Highest Mean Temperature (F) | 41.1 | 47.6 | 48.1 | 54.2 | 60.2 | 67.0 | 71.3 | 71.1 | 65.2 | 57.0 | 45.8 | 40.1 | 52.3 |
| Year Highest Occurred | 1986 | 1963 | 1986 | 1987 | 1969 | 1977 | 1988 | 1967 | 1990 | 1990 | 1976 | 1981 | 1981 |
| Lowest Mean Temperature (F) | 26.4 | 33.6 | 37.4 | 39.8 | 49.0 | 58.3 | 62.0 | 60.2 | 55.5 | 47.4 | 37.8 | 26.9 | 48.5 |
| Year Lowest Occurred | 1972 | 1990 | 1977 | 1967 | 1977 | 1980 | 1983 | 1976 | 1978 | 1971 | 1985 | 1990 | 1972 |
| Mean Min. Temperature (F) | 21.8 | 25.3 | 28.9 | 30.9 | 36.0 | 41.4 | 42.8 | 41.3 | 36.7 | 30.7 | 28.3 | 22.8 | 32.2 |
| Highest Mean Min. Temperature (F) | 29.5 | 34.7 | 34.5 | 36.7 | 42.5 | 46.2 | 46.8 | 49.1 | 43.3 | 38.4 | 32.6 | 31.3 | 35.4 |
| Year Highest Occurred | 1986 | 1963 | 1983 | 1965 | 1963 | 1969 | 1988 | 1990 | 1963 | 1963 | 1970 | 1981 | 1983 |
| Lowest Mean Min. Temperature (F) | 13.1 | 17.1 | 21.3 | 26.3 | 30.7 | 36.5 | 38.4 | 35.9 | 32.0 | 27.0 | 23.4 | 10.9 | 30.0 |
| Year Lowest Occurred | 1972 | 1990 | 1977 | 1975 | 1978 | 1984 | 1989 | 1986 | 1988 | 1965 | 1961 | 1990 | 1976 |
| Mean Precipitation (in.) | 7.68 | 5.92 | 5.46 | 2.73 | 1.36 | 0.77 | 0.24 | 0.41 | 0.88 | 3.08 | 5.98 | 6.73 | 41.24 |
| Highest Precipitation (in.) | 22.77 | 20.18 | 17.38 | 10.65 | 4.75 | 3.05 | 1.89 | 2.47 | 5.51 | 17.05 | 18.70 | 20.11 | 77.53 |
| Year Highest Occurred | 1969 | 1986 | 1989 | 1982 | 1990 | 1967 | 1974 | 1965 | 1986 | 1962 | 1973 | 1964 | 1983 |
| Lowest Precipitation (in.) | 0.52 | 0.22 | 1.12 | 0.07 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.74 | 0.00 | 10.81 |
| Year Lowest Occurred | 1984 | 1971 | 1988 | 1985 | 1982 | 1987 | 1989 | 1987 | 1988 | 1978 | 1986 | 1989 | 1976 |
| Heating Degree Days (F) | 949. | 717. | 676. | 513. | 307. | 118. | 46. | 65. | 172. | 403. | 684. | 936. | 5586. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 6. | 40. | 105. | 92. | 31. | 0. | 0. | 0. | 274. |