| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 29.5 | 35.4 | 43.1 | 54.1 | 65.0 | 74.9 | 84.7 | 82.8 | 72.8 | 60.5 | 42.6 | 31.4 | 56.4 |
| Highest Mean Max. Temperature (F) | 36.1 | 44.7 | 52.7 | 66.9 | 73.9 | 85.4 | 92.0 | 88.6 | 83.6 | 70.6 | 52.1 | 39.7 | 60.2 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1987 | 1969 | 1988 | 1989 | 1990 | 1990 | 1988 | 1962 | 1962 | 1990 |
| Lowest Mean Max. Temperature (F) | 17.5 | 29.5 | 35.9 | 43.1 | 57.8 | 68.8 | 77.9 | 76.8 | 62.8 | 52.2 | 34.3 | 23.7 | 53.0 |
| Year Lowest Occurred | 1979 | 1985 | 1964 | 1975 | 1975 | 1964 | 1982 | 1968 | 1986 | 1984 | 1985 | 1978 | 1975 |
| Mean Temperature (F) | 19.4 | 23.8 | 31.4 | 40.7 | 49.6 | 57.4 | 64.6 | 62.8 | 54.1 | 43.8 | 31.8 | 21.5 | 41.7 |
| Highest Mean Temperature (F) | 27.3 | 32.8 | 40.1 | 47.3 | 53.7 | 64.8 | 69.6 | 67.0 | 62.0 | 51.3 | 38.1 | 28.9 | 44.0 |
| Year Highest Occurred | 1969 | 1963 | 1986 | 1987 | 1987 | 1988 | 1989 | 1990 | 1990 | 1988 | 1965 | 1980 | 1981 |
| Lowest Mean Temperature (F) | 6.9 | 12.7 | 22.4 | 32.6 | 44.3 | 53.1 | 61.1 | 59.5 | 47.8 | 38.8 | 24.5 | 12.2 | 39.0 |
| Year Lowest Occurred | 1979 | 1964 | 1976 | 1975 | 1975 | 1975 | 1962 | 1975 | 1985 | 1969 | 1985 | 1990 | 1985 |
| Mean Min. Temperature (F) | 9.3 | 12.1 | 19.6 | 27.1 | 34.2 | 39.9 | 44.5 | 42.8 | 35.3 | 26.9 | 21.0 | 11.5 | 27.0 |
| Highest Mean Min. Temperature (F) | 18.9 | 21.8 | 27.4 | 32.7 | 40.0 | 44.1 | 48.8 | 51.4 | 40.7 | 33.2 | 27.3 | 20.7 | 30.5 |
| Year Highest Occurred | 1969 | 1986 | 1986 | 1965 | 1984 | 1988 | 1967 | 1983 | 1966 | 1983 | 1965 | 1980 | 1983 |
| Lowest Mean Min. Temperature (F) | -3.8 | -7.1 | 8.6 | 22.0 | 30.8 | 35.8 | 38.8 | 38.2 | 29.6 | 22.1 | 14.7 | -1.3 | 23.4 |
| Year Lowest Occurred | 1979 | 1964 | 1976 | 1975 | 1975 | 1979 | 1962 | 1985 | 1974 | 1978 | 1985 | 1990 | 1985 |
| Mean Precipitation (in.) | 1.47 | 1.06 | 1.04 | 1.48 | 2.32 | 1.65 | 1.25 | 1.29 | 1.61 | 1.15 | 1.48 | 1.22 | 17.02 |
| Highest Precipitation (in.) | 4.18 | 3.18 | 2.33 | 3.93 | 5.81 | 4.53 | 3.66 | 3.47 | 5.30 | 2.75 | 2.94 | 3.39 | 23.76 |
| Year Highest Occurred | 1970 | 1968 | 1989 | 1986 | 1987 | 1964 | 1973 | 1968 | 1961 | 1967 | 1983 | 1964 | 1983 |
| Lowest Precipitation (in.) | 0.23 | 0.32 | 0.08 | 0.26 | 0.00 | 0.12 | 0.04 | 0.06 | 0.00 | 0.00 | 0.06 | 0.15 | 10.66 |
| Year Lowest Occurred | 1961 | 1988 | 1966 | 1987 | 1969 | 1978 | 1966 | 1985 | 1987 | 1978 | 1976 | 1976 | 1966 |
| Heating Degree Days (F) | 1414. | 1154. | 1042. | 729. | 477. | 238. | 78. | 117. | 340. | 657. | 996. | 1349. | 8591. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 10. | 66. | 49. | 13. | 0. | 0. | 0. | 138. |