| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 40.3 | 46.7 | 52.6 | 60.9 | 70.6 | 80.5 | 91.1 | 88.7 | 78.9 | 67.2 | 50.5 | 41.0 | 64.1 |
| Highest Mean Max. Temperature (F) | 45.7 | 53.3 | 59.4 | 72.2 | 78.6 | 90.4 | 94.9 | 95.6 | 85.8 | 77.9 | 61.0 | 49.4 | 66.9 |
| Year Highest Occurred | 1961 | 1988 | 1986 | 1987 | 1966 | 1986 | 1989 | 1986 | 1990 | 1988 | 1976 | 1976 | 1988 |
| Lowest Mean Max. Temperature (F) | 31.3 | 37.2 | 47.1 | 50.5 | 63.3 | 73.3 | 86.5 | 79.9 | 70.4 | 58.8 | 42.4 | 34.7 | 61.4 |
| Year Lowest Occurred | 1979 | 1989 | 1962 | 1975 | 1977 | 1963 | 1987 | 1968 | 1986 | 1984 | 1985 | 1983 | 1984 |
| Mean Temperature (F) | 29.2 | 34.6 | 38.9 | 45.1 | 53.6 | 62.3 | 70.3 | 68.3 | 59.1 | 49.6 | 38.0 | 29.9 | 48.2 |
| Highest Mean Temperature (F) | 34.9 | 40.6 | 45.3 | 52.6 | 59.9 | 68.8 | 74.4 | 73.8 | 65.0 | 57.8 | 42.8 | 36.6 | 50.2 |
| Year Highest Occurred | 1978 | 1963 | 1986 | 1987 | 1966 | 1986 | 1985 | 1967 | 1967 | 1988 | 1976 | 1981 | 1986 |
| Lowest Mean Temperature (F) | 20.4 | 23.8 | 34.8 | 36.7 | 48.4 | 57.1 | 65.6 | 62.5 | 52.1 | 45.1 | 30.2 | 22.0 | 46.0 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1977 | 1984 | 1987 | 1968 | 1985 | 1969 | 1985 | 1990 | 1985 |
| Mean Min. Temperature (F) | 18.0 | 22.5 | 25.1 | 29.1 | 36.6 | 44.0 | 49.4 | 47.8 | 39.3 | 32.0 | 25.5 | 18.8 | 32.3 |
| Highest Mean Min. Temperature (F) | 26.5 | 29.4 | 31.1 | 33.4 | 44.2 | 48.3 | 54.7 | 54.9 | 46.3 | 38.1 | 31.2 | 27.2 | 34.9 |
| Year Highest Occurred | 1978 | 1986 | 1986 | 1985 | 1973 | 1961 | 1967 | 1961 | 1967 | 1963 | 1966 | 1975 | 1967 |
| Lowest Mean Min. Temperature (F) | 5.9 | 10.3 | 18.7 | 22.8 | 32.2 | 39.6 | 43.7 | 42.3 | 33.2 | 28.1 | 17.9 | 8.9 | 29.6 |
| Year Lowest Occurred | 1977 | 1989 | 1965 | 1975 | 1989 | 1975 | 1963 | 1987 | 1985 | 1976 | 1985 | 1990 | 1985 |
| Mean Precipitation (in.) | 0.76 | 0.58 | 0.90 | 0.90 | 1.28 | 1.10 | 0.38 | 0.58 | 0.60 | 0.66 | 0.96 | 0.87 | 9.57 |
| Highest Precipitation (in.) | 3.53 | 2.09 | 2.16 | 2.34 | 3.28 | 3.14 | 1.90 | 2.68 | 2.36 | 2.14 | 2.24 | 5.70 | 16.09 |
| Year Highest Occurred | 1972 | 1986 | 1983 | 1964 | 1980 | 1963 | 1976 | 1976 | 1971 | 1962 | 1975 | 1971 | 1983 |
| Lowest Precipitation (in.) | 0.15 | 0.00 | 0.11 | 0.00 | 0.29 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 3.56 |
| Year Lowest Occurred | 1990 | 1977 | 1972 | 1977 | 1976 | 1979 | 1989 | 1985 | 1987 | 1988 | 1969 | 1976 | 1966 |
| Heating Degree Days (F) | 1110. | 851. | 809. | 597. | 357. | 144. | 15. | 55. | 216. | 477. | 810. | 1088. | 6529. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 63. | 179. | 158. | 39. | 0. | 0. | 0. | 439. |