| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 24.1 | 29.7 | 42.1 | 58.6 | 70.4 | 80.3 | 87.1 | 84.8 | 74.2 | 61.5 | 43.0 | 28.3 | 57.0 |
| Highest Mean Max. Temperature (F) | 39.2 | 44.2 | 54.4 | 69.3 | 78.4 | 89.3 | 94.4 | 92.8 | 82.1 | 74.2 | 50.7 | 41.0 | 61.9 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1975 | 1983 | 1990 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 10.3 | 16.6 | 27.1 | 47.7 | 64.7 | 73.1 | 79.2 | 78.2 | 60.7 | 52.5 | 27.6 | 11.1 | 53.6 |
| Year Lowest Occurred | 1979 | 1979 | 1962 | 1975 | 1968 | 1969 | 1962 | 1966 | 1965 | 1969 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 13.2 | 19.4 | 31.9 | 46.3 | 57.6 | 67.9 | 74.4 | 71.8 | 60.8 | 48.5 | 32.4 | 18.1 | 45.2 |
| Highest Mean Temperature (F) | 28.3 | 33.3 | 39.8 | 53.6 | 65.4 | 75.3 | 79.9 | 78.9 | 66.5 | 59.4 | 39.7 | 28.8 | 49.7 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1974 | 1983 | 1990 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Temperature (F) | 0.3 | 6.1 | 20.7 | 39.6 | 52.2 | 61.1 | 69.9 | 66.9 | 50.5 | 42.1 | 18.7 | 2.8 | 42.0 |
| Year Lowest Occurred | 1979 | 1979 | 1969 | 1961 | 1968 | 1969 | 1962 | 1985 | 1965 | 1976 | 1985 | 1983 | 1978 |
| Mean Min. Temperature (F) | 2.3 | 9.1 | 21.7 | 34.0 | 44.8 | 55.5 | 61.7 | 58.8 | 47.3 | 35.4 | 21.8 | 7.8 | 33.4 |
| Highest Mean Min. Temperature (F) | 17.4 | 24.9 | 32.1 | 39.9 | 52.3 | 61.3 | 65.6 | 65.0 | 52.6 | 44.6 | 28.6 | 18.2 | 37.4 |
| Year Highest Occurred | 1983 | 1984 | 1973 | 1977 | 1977 | 1988 | 1966 | 1983 | 1963 | 1963 | 1981 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -9.9 | -4.4 | 11.0 | 25.4 | 38.5 | 49.1 | 55.1 | 54.2 | 40.3 | 28.8 | 9.8 | -5.6 | 29.9 |
| Year Lowest Occurred | 1978 | 1979 | 1969 | 1961 | 1976 | 1969 | 1971 | 1986 | 1965 | 1976 | 1985 | 1983 | 1978 |
| Mean Precipitation (in.) | 0.41 | 0.68 | 1.66 | 2.09 | 2.87 | 3.35 | 2.67 | 1.97 | 1.72 | 1.47 | 0.72 | 0.47 | 20.08 |
| Highest Precipitation (in.) | 1.93 | 3.87 | 5.89 | 5.39 | 7.69 | 11.49 | 6.44 | 4.63 | 4.03 | 4.66 | 2.46 | 1.53 | 31.71 |
| Year Highest Occurred | 1975 | 1962 | 1977 | 1968 | 1962 | 1984 | 1986 | 1981 | 1986 | 1961 | 1985 | 1968 | 1962 |
| Lowest Precipitation (in.) | 0.02 | 0.03 | 0.15 | 0.24 | 0.56 | 0.77 | 0.46 | 0.14 | 0.15 | 0.06 | 0.00 | 0.00 | 10.85 |
| Year Lowest Occurred | 1990 | 1968 | 1971 | 1981 | 1967 | 1988 | 1975 | 1976 | 1974 | 1964 | 1990 | 1986 | 1964 |
| Heating Degree Days (F) | 1606. | 1277. | 1026. | 561. | 256. | 48. | 10. | 22. | 173. | 512. | 978. | 1454. | 7923. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 27. | 135. | 302. | 232. | 47. | 0. | 0. | 0. | 743. |