| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 21.0 | 27.3 | 39.9 | 57.8 | 71.4 | 80.2 | 84.8 | 82.0 | 72.2 | 60.1 | 40.8 | 25.0 | 55.2 |
| Highest Mean Max. Temperature (F) | 35.3 | 41.3 | 53.0 | 68.9 | 80.5 | 89.3 | 91.8 | 87.6 | 78.0 | 72.2 | 49.2 | 34.3 | 60.3 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1988 | 1988 | 1988 | 1983 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Max. Temperature (F) | 8.4 | 18.6 | 29.1 | 45.9 | 65.6 | 72.7 | 78.5 | 75.3 | 61.7 | 55.0 | 30.6 | 10.4 | 52.3 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1974 | 1969 | 1962 | 1985 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 11.0 | 17.0 | 30.0 | 46.1 | 58.8 | 68.1 | 73.0 | 70.3 | 60.7 | 49.2 | 32.6 | 16.7 | 44.5 |
| Highest Mean Temperature (F) | 25.2 | 31.4 | 39.9 | 53.9 | 66.7 | 74.7 | 77.6 | 75.9 | 66.3 | 59.7 | 39.5 | 27.4 | 49.4 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1988 | 1983 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Temperature (F) | -0.9 | 7.8 | 18.5 | 38.0 | 53.6 | 61.2 | 67.9 | 65.6 | 53.3 | 43.4 | 23.1 | 2.0 | 42.1 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1967 | 1969 | 1962 | 1985 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 1.0 | 6.7 | 20.1 | 34.4 | 46.2 | 55.9 | 61.2 | 58.5 | 49.3 | 38.3 | 24.3 | 8.4 | 33.7 |
| Highest Mean Min. Temperature (F) | 15.1 | 21.5 | 31.4 | 40.7 | 54.2 | 60.1 | 64.9 | 64.1 | 54.6 | 47.1 | 31.0 | 20.5 | 38.5 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1988 | 1983 | 1983 | 1978 | 1963 | 1962 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -10.3 | -4.6 | 7.9 | 28.1 | 40.5 | 49.6 | 56.9 | 54.9 | 44.0 | 31.7 | 15.6 | -6.4 | 31.5 |
| Year Lowest Occurred | 1982 | 1967 | 1965 | 1961 | 1967 | 1969 | 1971 | 1967 | 1974 | 1976 | 1985 | 1983 | 1989 |
| Mean Precipitation (in.) | 0.85 | 0.77 | 1.60 | 2.49 | 3.31 | 4.24 | 3.86 | 3.68 | 3.12 | 2.34 | 1.53 | 0.96 | 28.75 |
| Highest Precipitation (in.) | 2.95 | 2.02 | 4.45 | 6.19 | 6.95 | 9.05 | 11.42 | 6.98 | 6.80 | 5.94 | 5.05 | 3.01 | 39.49 |
| Year Highest Occurred | 1969 | 1971 | 1965 | 1986 | 1965 | 1990 | 1961 | 1985 | 1986 | 1968 | 1975 | 1968 | 1965 |
| Lowest Precipitation (in.) | 0.02 | 0.04 | 0.59 | 0.09 | 0.69 | 0.08 | 1.36 | 0.72 | 0.82 | 0.16 | 0.12 | 0.06 | 15.68 |
| Year Lowest Occurred | 1990 | 1987 | 1974 | 1987 | 1981 | 1988 | 1979 | 1969 | 1967 | 1978 | 1980 | 1980 | 1988 |
| Heating Degree Days (F) | 1674. | 1344. | 1085. | 567. | 236. | 42. | 11. | 18. | 155. | 490. | 972. | 1497. | 8091. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 44. | 135. | 259. | 182. | 26. | 0. | 0. | 0. | 646. |