| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 30.9 | 35.9 | 44.0 | 54.4 | 65.9 | 76.6 | 85.4 | 83.2 | 72.8 | 61.6 | 44.0 | 33.0 | 57.3 |
| Highest Mean Max. Temperature (F) | 40.4 | 45.1 | 53.6 | 66.2 | 72.3 | 85.3 | 90.2 | 87.4 | 80.4 | 70.4 | 51.3 | 45.2 | 60.9 |
| Year Highest Occurred | 1981 | 1977 | 1986 | 1987 | 1969 | 1977 | 1989 | 1969 | 1979 | 1988 | 1962 | 1980 | 1988 |
| Lowest Mean Max. Temperature (F) | 17.7 | 25.0 | 32.9 | 45.7 | 59.8 | 68.8 | 81.6 | 75.7 | 61.3 | 49.6 | 34.3 | 23.2 | 54.1 |
| Year Lowest Occurred | 1979 | 1989 | 1969 | 1968 | 1967 | 1975 | 1986 | 1968 | 1965 | 1969 | 1971 | 1983 | 1984 |
| Mean Temperature (F) | 16.4 | 21.1 | 30.4 | 40.1 | 50.4 | 59.6 | 67.1 | 64.7 | 54.2 | 43.3 | 29.1 | 18.5 | 41.2 |
| Highest Mean Temperature (F) | 24.1 | 29.3 | 38.4 | 46.3 | 54.5 | 66.1 | 70.4 | 68.3 | 60.5 | 48.7 | 35.2 | 29.6 | 43.8 |
| Year Highest Occurred | 1983 | 1963 | 1986 | 1990 | 1987 | 1977 | 1989 | 1983 | 1990 | 1963 | 1965 | 1980 | 1981 |
| Lowest Mean Temperature (F) | 3.9 | 10.2 | 17.4 | 33.3 | 46.3 | 54.3 | 64.6 | 60.2 | 46.7 | 36.4 | 21.4 | 11.3 | 38.6 |
| Year Lowest Occurred | 1979 | 1973 | 1969 | 1970 | 1967 | 1969 | 1982 | 1968 | 1965 | 1969 | 1971 | 1971 | 1984 |
| Mean Min. Temperature (F) | 1.9 | 6.3 | 16.6 | 25.7 | 34.8 | 42.7 | 48.8 | 46.1 | 35.4 | 25.0 | 14.2 | 3.9 | 25.1 |
| Highest Mean Min. Temperature (F) | 11.7 | 16.0 | 23.2 | 29.9 | 38.1 | 49.0 | 51.9 | 51.7 | 40.8 | 29.5 | 20.7 | 13.9 | 27.9 |
| Year Highest Occurred | 1971 | 1986 | 1989 | 1990 | 1987 | 1974 | 1966 | 1983 | 1990 | 1963 | 1965 | 1980 | 1981 |
| Lowest Mean Min. Temperature (F) | -9.9 | -7.3 | 1.9 | 20.5 | 32.7 | 39.1 | 45.9 | 41.3 | 29.9 | 20.7 | 6.8 | -3.4 | 22.9 |
| Year Lowest Occurred | 1979 | 1973 | 1969 | 1982 | 1986 | 1980 | 1972 | 1988 | 1988 | 1970 | 1979 | 1984 | 1973 |
| Mean Precipitation (in.) | 0.31 | 0.27 | 0.55 | 0.86 | 1.04 | 0.88 | 0.72 | 0.64 | 0.80 | 0.65 | 0.39 | 0.38 | 7.49 |
| Highest Precipitation (in.) | 0.89 | 0.81 | 1.50 | 2.92 | 3.39 | 2.76 | 4.87 | 2.05 | 2.51 | 1.50 | 0.96 | 1.18 | 11.47 |
| Year Highest Occurred | 1980 | 1986 | 1983 | 1986 | 1971 | 1970 | 1977 | 1968 | 1973 | 1971 | 1983 | 1983 | 1986 |
| Lowest Precipitation (in.) | 0.03 | 0.00 | 0.05 | 0.01 | 0.00 | 0.00 | 0.07 | 0.00 | 0.02 | 0.01 | 0.00 | 0.00 | 3.82 |
| Year Lowest Occurred | 1961 | 1977 | 1976 | 1989 | 1969 | 1977 | 1974 | 1985 | 1979 | 1988 | 1976 | 1962 | 1974 |
| Heating Degree Days (F) | 1507. | 1229. | 1073. | 747. | 453. | 193. | 26. | 76. | 332. | 673. | 1077. | 1442. | 8828. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 31. | 91. | 67. | 8. | 0. | 0. | 0. | 197. |