| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 23.4 | 28.2 | 40.3 | 55.7 | 68.0 | 78.2 | 82.7 | 79.3 | 70.2 | 59.1 | 42.9 | 28.6 | 54.7 |
| Highest Mean Max. Temperature (F) | 38.5 | 39.4 | 48.0 | 65.6 | 76.8 | 86.6 | 87.3 | 85.1 | 75.9 | 70.6 | 50.1 | 36.7 | 59.0 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1977 | 1977 | 1988 | 1988 | 1988 | 1978 | 1963 | 1975 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 12.5 | 20.3 | 29.4 | 48.2 | 60.4 | 66.3 | 77.8 | 73.4 | 66.4 | 52.2 | 36.3 | 18.1 | 51.2 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1967 | 1969 | 1962 | 1967 | 1965 | 1969 | 1967 | 1983 | 1969 |
| Mean Temperature (F) | 13.6 | 18.0 | 30.7 | 45.0 | 56.7 | 66.4 | 71.1 | 67.9 | 59.1 | 48.1 | 33.8 | 19.7 | 44.2 |
| Highest Mean Temperature (F) | 27.5 | 29.0 | 39.1 | 52.3 | 63.9 | 70.8 | 74.8 | 73.3 | 64.6 | 57.8 | 40.4 | 27.8 | 48.4 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1988 | 1977 | 1988 | 1978 | 1963 | 1975 | 1979 | 1987 |
| Lowest Mean Temperature (F) | 1.7 | 9.3 | 22.1 | 39.8 | 49.4 | 57.1 | 66.8 | 62.6 | 55.7 | 43.0 | 26.2 | 6.8 | 41.7 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1967 | 1969 | 1962 | 1967 | 1965 | 1987 | 1976 | 1983 | 1969 |
| Mean Min. Temperature (F) | 3.8 | 7.7 | 21.2 | 34.2 | 45.4 | 54.5 | 59.6 | 56.5 | 47.9 | 37.0 | 24.7 | 10.9 | 33.6 |
| Highest Mean Min. Temperature (F) | 16.5 | 18.5 | 30.5 | 39.2 | 53.0 | 59.9 | 64.5 | 62.6 | 53.2 | 46.0 | 30.6 | 21.5 | 38.1 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1986 | 1975 | 1975 | 1974 | 1973 | 1978 | 1971 | 1975 | 1987 | 1973 |
| Lowest Mean Min. Temperature (F) | -9.1 | -2.6 | 13.8 | 30.2 | 38.4 | 47.9 | 53.9 | 51.8 | 42.6 | 30.5 | 15.5 | -4.6 | 30.6 |
| Year Lowest Occurred | 1977 | 1963 | 1969 | 1982 | 1967 | 1969 | 1985 | 1967 | 1976 | 1976 | 1976 | 1983 | 1963 |
| Mean Precipitation (in.) | 1.12 | 1.11 | 2.32 | 3.08 | 3.27 | 3.68 | 3.36 | 3.77 | 4.18 | 2.37 | 2.22 | 1.62 | 32.10 |
| Highest Precipitation (in.) | 2.63 | 2.81 | 4.41 | 8.05 | 7.35 | 8.93 | 6.98 | 10.70 | 14.77 | 5.65 | 5.42 | 2.95 | 40.79 |
| Year Highest Occurred | 1988 | 1981 | 1977 | 1973 | 1973 | 1984 | 1985 | 1980 | 1986 | 1967 | 1985 | 1977 | 1986 |
| Lowest Precipitation (in.) | 0.08 | 0.00 | 0.25 | 0.83 | 0.51 | 0.87 | 0.47 | 1.13 | 0.58 | 0.08 | 0.07 | 0.33 | 20.71 |
| Year Lowest Occurred | 1981 | 1969 | 1978 | 1989 | 1981 | 1988 | 1967 | 1976 | 1975 | 1964 | 1976 | 1989 | 1966 |
| Heating Degree Days (F) | 1593. | 1316. | 1063. | 600. | 291. | 68. | 13. | 42. | 190. | 524. | 936. | 1404. | 8040. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 33. | 110. | 202. | 132. | 13. | 0. | 0. | 0. | 490. |