| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 19.0 | 25.6 | 38.2 | 55.8 | 69.4 | 77.8 | 84.5 | 83.6 | 71.9 | 59.7 | 39.4 | 23.6 | 54.0 |
| Highest Mean Max. Temperature (F) | 34.6 | 36.6 | 49.9 | 70.3 | 79.1 | 90.9 | 89.8 | 90.5 | 79.3 | 71.6 | 48.1 | 36.9 | 57.9 |
| Year Highest Occurred | 1990 | 1984 | 1986 | 1977 | 1977 | 1988 | 1988 | 1983 | 1978 | 1963 | 1981 | 1979 | 1990 |
| Lowest Mean Max. Temperature (F) | 5.0 | 11.4 | 25.9 | 41.1 | 63.4 | 69.9 | 77.6 | 76.5 | 57.8 | 52.6 | 24.4 | 7.6 | 50.5 |
| Year Lowest Occurred | 1978 | 1979 | 1965 | 1975 | 1968 | 1985 | 1962 | 1977 | 1965 | 1969 | 1985 | 1983 | 1982 |
| Mean Temperature (F) | 8.6 | 15.0 | 27.5 | 43.2 | 55.7 | 64.9 | 70.7 | 69.0 | 57.9 | 46.5 | 28.8 | 13.4 | 41.8 |
| Highest Mean Temperature (F) | 24.2 | 28.4 | 37.9 | 53.9 | 64.3 | 75.4 | 75.3 | 75.6 | 64.0 | 57.2 | 36.2 | 24.3 | 46.5 |
| Year Highest Occurred | 1990 | 1984 | 1986 | 1977 | 1977 | 1988 | 1989 | 1983 | 1978 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Temperature (F) | -5.2 | 0.7 | 15.3 | 33.9 | 50.5 | 58.3 | 66.0 | 62.3 | 46.4 | 41.4 | 16.6 | -0.9 | 38.8 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1975 | 1968 | 1969 | 1962 | 1977 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -2.0 | 4.3 | 16.9 | 30.5 | 41.9 | 51.9 | 56.8 | 54.4 | 43.9 | 33.2 | 18.1 | 3.2 | 29.4 |
| Highest Mean Min. Temperature (F) | 13.7 | 20.2 | 27.4 | 37.6 | 49.5 | 59.9 | 61.1 | 60.7 | 48.7 | 42.7 | 26.0 | 15.9 | 35.3 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1977 | 1988 | 1989 | 1983 | 1990 | 1963 | 1983 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -16.1 | -10.0 | 4.6 | 25.3 | 36.0 | 45.6 | 51.6 | 48.1 | 34.9 | 26.9 | 8.8 | -9.3 | 26.6 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1979 | 1967 | 1969 | 1972 | 1977 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.42 | 0.41 | 0.87 | 1.70 | 2.31 | 3.33 | 2.29 | 1.79 | 1.73 | 1.09 | 0.44 | 0.43 | 16.81 |
| Highest Precipitation (in.) | 1.12 | 2.08 | 2.73 | 4.64 | 5.53 | 8.73 | 6.33 | 5.63 | 5.48 | 4.91 | 1.87 | 1.08 | 25.31 |
| Year Highest Occurred | 1969 | 1969 | 1988 | 1976 | 1962 | 1990 | 1987 | 1980 | 1977 | 1982 | 1986 | 1969 | 1986 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.02 | 0.00 | 0.23 | 0.99 | 0.33 | 0.12 | 0.05 | 0.04 | 0.00 | 0.00 | 10.71 |
| Year Lowest Occurred | 1988 | 1988 | 1961 | 1987 | 1984 | 1989 | 1967 | 1970 | 1974 | 1989 | 1987 | 1986 | 1988 |
| Heating Degree Days (F) | 1748. | 1400. | 1163. | 654. | 309. | 110. | 16. | 57. | 244. | 574. | 1086. | 1600. | 8961. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 20. | 107. | 193. | 181. | 31. | 0. | 0. | 0. | 532. |