| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 22.3 | 29.0 | 41.6 | 58.3 | 71.0 | 80.3 | 86.6 | 83.5 | 73.3 | 60.4 | 41.9 | 26.4 | 56.2 |
| Highest Mean Max. Temperature (F) | 36.8 | 41.6 | 55.6 | 68.0 | 78.0 | 88.3 | 93.5 | 91.7 | 79.7 | 69.7 | 48.2 | 37.6 | 60.2 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1981 | 1977 | 1988 | 1976 | 1976 | 1978 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 9.3 | 16.5 | 29.8 | 47.7 | 65.5 | 74.1 | 79.6 | 77.9 | 61.0 | 51.3 | 26.3 | 8.2 | 53.3 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1975 | 1968 | 1969 | 1962 | 1985 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 11.3 | 18.2 | 30.7 | 46.1 | 58.4 | 67.9 | 73.8 | 70.7 | 60.4 | 47.8 | 31.8 | 16.2 | 44.4 |
| Highest Mean Temperature (F) | 26.5 | 31.0 | 39.3 | 53.7 | 66.0 | 75.7 | 78.8 | 76.2 | 66.9 | 56.7 | 37.9 | 26.3 | 48.6 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1981 | 1977 | 1988 | 1974 | 1976 | 1978 | 1963 | 1962 | 1979 | 1987 |
| Lowest Mean Temperature (F) | -1.4 | 5.8 | 18.0 | 39.7 | 52.4 | 61.6 | 69.0 | 65.8 | 51.4 | 41.6 | 18.8 | -1.1 | 42.1 |
| Year Lowest Occurred | 1979 | 1989 | 1969 | 1975 | 1968 | 1969 | 1962 | 1986 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 0.4 | 7.2 | 19.7 | 33.9 | 45.8 | 55.5 | 60.9 | 57.8 | 47.5 | 35.3 | 21.7 | 6.0 | 32.6 |
| Highest Mean Min. Temperature (F) | 16.1 | 20.3 | 29.3 | 39.4 | 53.9 | 63.0 | 64.6 | 62.6 | 54.1 | 43.7 | 27.6 | 16.2 | 36.9 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1981 | 1977 | 1988 | 1966 | 1983 | 1978 | 1963 | 1962 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -12.2 | -5.4 | 5.3 | 27.8 | 39.2 | 49.0 | 55.3 | 53.2 | 41.7 | 29.0 | 11.3 | -10.3 | 30.6 |
| Year Lowest Occurred | 1978 | 1979 | 1969 | 1961 | 1967 | 1969 | 1971 | 1986 | 1965 | 1987 | 1985 | 1983 | 1978 |
| Mean Precipitation (in.) | 0.47 | 0.63 | 1.53 | 2.24 | 2.86 | 3.67 | 2.93 | 2.57 | 2.18 | 1.68 | 0.94 | 0.60 | 22.30 |
| Highest Precipitation (in.) | 1.85 | 1.94 | 3.50 | 7.31 | 7.45 | 9.15 | 7.15 | 5.74 | 6.10 | 4.74 | 3.63 | 2.03 | 30.16 |
| Year Highest Occurred | 1988 | 1977 | 1977 | 1986 | 1972 | 1967 | 1963 | 1982 | 1986 | 1982 | 1983 | 1968 | 1982 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.10 | 0.38 | 0.43 | 1.38 | 0.50 | 0.78 | 0.11 | 0.00 | 0.02 | 0.00 | 12.65 |
| Year Lowest Occurred | 1990 | 1983 | 1967 | 1987 | 1976 | 1978 | 1975 | 1972 | 1974 | 1988 | 1984 | 1986 | 1976 |
| Heating Degree Days (F) | 1665. | 1310. | 1063. | 567. | 236. | 48. | 10. | 21. | 176. | 533. | 996. | 1513. | 8138. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 31. | 135. | 283. | 198. | 38. | 0. | 0. | 0. | 685. |