| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 21.0 | 26.2 | 37.5 | 52.9 | 66.2 | 73.1 | 77.2 | 73.9 | 64.8 | 54.6 | 37.8 | 24.3 | 50.8 |
| Highest Mean Max. Temperature (F) | 31.6 | 34.8 | 45.3 | 62.2 | 75.6 | 78.3 | 82.1 | 81.4 | 68.3 | 66.8 | 44.8 | 30.7 | 53.8 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1966 | 1969 | 1976 | 1963 | 1975 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 11.3 | 18.7 | 30.9 | 47.2 | 59.4 | 65.1 | 73.1 | 69.4 | 60.3 | 47.3 | 31.5 | 15.1 | 48.4 |
| Year Lowest Occurred | 1963 | 1963 | 1965 | 1983 | 1973 | 1969 | 1978 | 1986 | 1974 | 1969 | 1976 | 1983 | 1979 |
| Mean Temperature (F) | 11.3 | 15.4 | 26.6 | 40.8 | 52.7 | 60.7 | 65.5 | 62.8 | 54.6 | 44.6 | 30.2 | 16.2 | 40.1 |
| Highest Mean Temperature (F) | 23.1 | 26.4 | 35.1 | 47.8 | 60.7 | 64.9 | 69.1 | 67.3 | 58.4 | 54.3 | 35.6 | 23.7 | 44.0 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1977 | 1976 | 1983 | 1983 | 1978 | 1963 | 1975 | 1965 | 1987 |
| Lowest Mean Temperature (F) | 2.0 | 7.1 | 19.6 | 35.3 | 44.9 | 53.9 | 62.4 | 58.5 | 50.0 | 38.8 | 22.5 | 6.8 | 37.6 |
| Year Lowest Occurred | 1977 | 1963 | 1965 | 1972 | 1967 | 1969 | 1978 | 1967 | 1974 | 1969 | 1976 | 1989 | 1967 |
| Mean Min. Temperature (F) | 1.6 | 4.6 | 15.7 | 28.6 | 39.2 | 48.3 | 53.8 | 51.7 | 44.4 | 34.6 | 22.5 | 8.1 | 29.4 |
| Highest Mean Min. Temperature (F) | 14.6 | 18.9 | 25.8 | 34.0 | 46.1 | 53.0 | 59.1 | 57.5 | 49.4 | 43.5 | 27.0 | 17.7 | 34.1 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1986 | 1982 | 1987 | 1983 | 1983 | 1978 | 1971 | 1963 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -8.7 | -5.1 | 6.9 | 22.9 | 29.3 | 42.0 | 49.0 | 44.9 | 39.1 | 28.0 | 13.5 | -2.9 | 25.5 |
| Year Lowest Occurred | 1972 | 1967 | 1969 | 1972 | 1967 | 1982 | 1967 | 1967 | 1967 | 1976 | 1976 | 1976 | 1967 |
| Mean Precipitation (in.) | 1.05 | 0.88 | 1.91 | 2.53 | 3.34 | 3.79 | 3.35 | 3.70 | 3.99 | 2.59 | 2.04 | 1.47 | 30.64 |
| Highest Precipitation (in.) | 2.80 | 2.96 | 5.43 | 4.47 | 6.95 | 9.13 | 7.89 | 6.35 | 7.80 | 4.71 | 4.76 | 3.05 | 41.47 |
| Year Highest Occurred | 1969 | 1971 | 1977 | 1973 | 1973 | 1968 | 1978 | 1962 | 1965 | 1983 | 1985 | 1971 | 1977 |
| Lowest Precipitation (in.) | 0.12 | 0.08 | 0.27 | 0.70 | 0.62 | 1.15 | 1.31 | 0.46 | 0.52 | 0.46 | 0.19 | 0.51 | 20.21 |
| Year Lowest Occurred | 1961 | 1969 | 1978 | 1971 | 1986 | 1972 | 1965 | 1970 | 1989 | 1964 | 1967 | 1986 | 1989 |
| Heating Degree Days (F) | 1665. | 1389. | 1190. | 726. | 396. | 160. | 59. | 111. | 312. | 632. | 1044. | 1513. | 9197. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 15. | 31. | 74. | 43. | 0. | 0. | 0. | 0. | 163. |