| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 41.9 | 47.0 | 58.2 | 69.3 | 77.9 | 86.0 | 89.5 | 88.4 | 82.4 | 71.5 | 58.7 | 46.8 | 68.1 |
| Highest Mean Max. Temperature (F) | 50.8 | 56.8 | 64.9 | 75.5 | 85.9 | 90.2 | 94.9 | 96.4 | 87.8 | 84.2 | 64.1 | 56.7 | 70.3 |
| Year Highest Occurred | 1990 | 1976 | 1977 | 1981 | 1962 | 1984 | 1986 | 1983 | 1970 | 1963 | 1964 | 1984 | 1964 |
| Lowest Mean Max. Temperature (F) | 28.5 | 35.7 | 49.7 | 61.2 | 71.6 | 80.0 | 84.7 | 84.1 | 76.3 | 63.2 | 50.7 | 35.2 | 65.3 |
| Year Lowest Occurred | 1977 | 1978 | 1965 | 1983 | 1990 | 1989 | 1967 | 1967 | 1974 | 1988 | 1976 | 1989 | 1989 |
| Mean Temperature (F) | 32.0 | 36.1 | 46.6 | 57.0 | 65.6 | 74.0 | 77.7 | 76.3 | 69.9 | 58.1 | 47.5 | 36.9 | 56.5 |
| Highest Mean Temperature (F) | 41.8 | 44.7 | 54.3 | 62.1 | 72.5 | 77.5 | 81.1 | 80.8 | 75.6 | 66.3 | 52.3 | 46.5 | 58.7 |
| Year Highest Occurred | 1990 | 1990 | 1973 | 1981 | 1962 | 1971 | 1969 | 1983 | 1970 | 1971 | 1985 | 1984 | 1973 |
| Lowest Mean Temperature (F) | 18.8 | 24.9 | 39.8 | 49.3 | 60.8 | 70.3 | 73.3 | 71.9 | 65.7 | 51.8 | 38.3 | 25.1 | 54.9 |
| Year Lowest Occurred | 1977 | 1978 | 1965 | 1983 | 1981 | 1974 | 1967 | 1967 | 1975 | 1988 | 1976 | 1989 | 1979 |
| Mean Min. Temperature (F) | 22.1 | 25.2 | 35.0 | 44.6 | 53.3 | 61.9 | 65.7 | 64.2 | 57.4 | 44.6 | 36.1 | 26.9 | 44.8 |
| Highest Mean Min. Temperature (F) | 33.0 | 34.2 | 44.0 | 49.0 | 60.1 | 65.3 | 69.2 | 68.3 | 63.3 | 54.2 | 42.3 | 36.8 | 47.7 |
| Year Highest Occurred | 1974 | 1990 | 1973 | 1977 | 1987 | 1971 | 1977 | 1988 | 1970 | 1971 | 1985 | 1971 | 1973 |
| Lowest Mean Min. Temperature (F) | 9.1 | 14.0 | 28.0 | 37.3 | 48.3 | 58.5 | 61.3 | 59.7 | 51.8 | 38.7 | 25.8 | 14.9 | 42.8 |
| Year Lowest Occurred | 1977 | 1978 | 1969 | 1983 | 1976 | 1972 | 1984 | 1967 | 1981 | 1987 | 1976 | 1989 | 1982 |
| Mean Precipitation (in.) | 3.81 | 4.25 | 5.25 | 4.69 | 4.81 | 3.53 | 4.35 | 3.43 | 3.45 | 3.19 | 4.90 | 5.13 | 50.79 |
| Highest Precipitation (in.) | 8.49 | 13.50 | 13.03 | 10.52 | 11.60 | 9.77 | 7.23 | 8.73 | 10.19 | 8.28 | 10.48 | 14.59 | 71.97 |
| Year Highest Occurred | 1978 | 1989 | 1975 | 1983 | 1983 | 1989 | 1972 | 1974 | 1979 | 1970 | 1973 | 1978 | 1979 |
| Lowest Precipitation (in.) | 0.88 | 1.08 | 1.67 | 1.53 | 1.29 | 0.55 | 1.58 | 0.62 | 0.02 | 0.08 | 1.17 | 0.53 | 28.47 |
| Year Lowest Occurred | 1970 | 1968 | 1966 | 1986 | 1964 | 1988 | 1973 | 1965 | 1963 | 1963 | 1976 | 1976 | 1963 |
| Heating Degree Days (F) | 1023. | 809. | 570. | 259. | 101. | 0. | 0. | 0. | 29. | 250. | 525. | 871. | 4437. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 19. | 120. | 270. | 394. | 350. | 176. | 36. | 0. | 0. | 1365. |