| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 19.6 | 25.0 | 36.4 | 51.4 | 65.2 | 73.1 | 78.1 | 75.0 | 65.3 | 54.3 | 37.6 | 23.4 | 50.4 |
| Highest Mean Max. Temperature (F) | 31.0 | 34.5 | 45.0 | 59.8 | 76.3 | 79.8 | 82.7 | 79.7 | 69.5 | 67.8 | 44.9 | 29.8 | 54.4 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1966 | 1969 | 1987 | 1963 | 1963 | 1987 | 1987 |
| Lowest Mean Max. Temperature (F) | 9.8 | 17.8 | 29.1 | 44.3 | 57.7 | 63.5 | 73.0 | 70.1 | 59.3 | 47.8 | 31.4 | 13.9 | 47.5 |
| Year Lowest Occurred | 1963 | 1979 | 1965 | 1975 | 1979 | 1969 | 1978 | 1977 | 1965 | 1987 | 1976 | 1983 | 1979 |
| Mean Temperature (F) | 8.4 | 12.0 | 24.1 | 39.0 | 52.1 | 60.7 | 66.0 | 63.3 | 54.2 | 43.8 | 29.2 | 14.2 | 38.9 |
| Highest Mean Temperature (F) | 19.6 | 23.3 | 33.7 | 44.4 | 61.2 | 65.2 | 70.1 | 67.1 | 58.6 | 52.6 | 34.4 | 22.5 | 42.6 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1986 | 1977 | 1971 | 1966 | 1983 | 1978 | 1963 | 1975 | 1987 | 1987 |
| Lowest Mean Temperature (F) | -1.6 | 3.9 | 16.1 | 32.2 | 45.4 | 54.0 | 62.6 | 58.6 | 48.9 | 37.9 | 21.8 | 4.5 | 36.5 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1983 | 1969 | 1971 | 1977 | 1974 | 1987 | 1976 | 1983 | 1979 |
| Mean Min. Temperature (F) | -2.8 | -1.0 | 11.9 | 26.6 | 38.9 | 48.3 | 53.8 | 51.5 | 43.1 | 33.2 | 20.7 | 4.8 | 27.4 |
| Highest Mean Min. Temperature (F) | 8.1 | 13.9 | 24.3 | 32.6 | 46.4 | 52.6 | 57.4 | 56.2 | 48.0 | 42.2 | 25.7 | 15.2 | 30.6 |
| Year Highest Occurred | 1990 | 1983 | 1973 | 1986 | 1962 | 1971 | 1983 | 1984 | 1978 | 1971 | 1988 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -13.9 | -10.1 | 3.1 | 19.8 | 32.6 | 40.6 | 50.3 | 47.0 | 37.7 | 26.5 | 12.2 | -6.7 | 24.5 |
| Year Lowest Occurred | 1977 | 1974 | 1965 | 1982 | 1983 | 1982 | 1985 | 1977 | 1976 | 1976 | 1976 | 1989 | 1989 |
| Mean Precipitation (in.) | 1.05 | 0.88 | 1.62 | 2.24 | 3.26 | 3.85 | 3.67 | 4.42 | 4.21 | 2.80 | 2.11 | 1.45 | 31.56 |
| Highest Precipitation (in.) | 2.54 | 2.62 | 3.74 | 4.48 | 6.98 | 13.62 | 7.06 | 10.74 | 8.03 | 5.29 | 5.08 | 2.88 | 42.79 |
| Year Highest Occurred | 1967 | 1971 | 1979 | 1982 | 1973 | 1981 | 1968 | 1972 | 1980 | 1979 | 1975 | 1982 | 1968 |
| Lowest Precipitation (in.) | 0.18 | 0.07 | 0.27 | 0.60 | 0.27 | 1.63 | 1.03 | 1.09 | 0.53 | 0.51 | 0.45 | 0.43 | 18.24 |
| Year Lowest Occurred | 1961 | 1987 | 1978 | 1971 | 1986 | 1988 | 1989 | 1970 | 1976 | 1964 | 1981 | 1986 | 1976 |
| Heating Degree Days (F) | 1755. | 1484. | 1268. | 780. | 416. | 164. | 52. | 100. | 324. | 657. | 1074. | 1575. | 9649. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 16. | 35. | 83. | 47. | 0. | 0. | 0. | 0. | 181. |