| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 37.6 | 40.3 | 43.7 | 52.4 | 62.5 | 73.3 | 77.9 | 75.2 | 68.9 | 60.2 | 46.4 | 38.2 | 56.4 |
| Highest Mean Max. Temperature (F) | 45.2 | 45.0 | 51.5 | 60.6 | 68.7 | 80.9 | 82.5 | 78.5 | 77.2 | 65.6 | 53.7 | 47.8 | 59.8 |
| Year Highest Occurred | 1986 | 1981 | 1986 | 1981 | 1984 | 1990 | 1980 | 1985 | 1979 | 1964 | 1989 | 1980 | 1989 |
| Lowest Mean Max. Temperature (F) | 29.2 | 33.0 | 37.5 | 44.1 | 56.8 | 67.7 | 74.1 | 70.6 | 61.6 | 49.0 | 39.6 | 33.5 | 54.1 |
| Year Lowest Occurred | 1979 | 1964 | 1965 | 1970 | 1965 | 1969 | 1986 | 1968 | 1965 | 1984 | 1972 | 1978 | 1970 |
| Mean Temperature (F) | 21.9 | 24.8 | 29.5 | 37.7 | 46.5 | 54.8 | 60.2 | 58.5 | 52.0 | 43.1 | 31.5 | 23.4 | 40.3 |
| Highest Mean Temperature (F) | 28.3 | 28.8 | 37.0 | 44.1 | 50.8 | 60.4 | 63.2 | 60.9 | 56.0 | 47.3 | 35.4 | 32.4 | 43.0 |
| Year Highest Occurred | 1986 | 1976 | 1989 | 1981 | 1984 | 1990 | 1989 | 1986 | 1990 | 1963 | 1981 | 1980 | 1989 |
| Lowest Mean Temperature (F) | 16.4 | 16.4 | 22.9 | 30.5 | 42.8 | 50.8 | 57.4 | 54.8 | 47.7 | 36.3 | 25.2 | 18.7 | 37.7 |
| Year Lowest Occurred | 1979 | 1964 | 1964 | 1970 | 1975 | 1969 | 1962 | 1968 | 1961 | 1969 | 1979 | 1978 | 1964 |
| Mean Min. Temperature (F) | 6.2 | 9.1 | 15.3 | 22.9 | 30.4 | 36.3 | 42.6 | 41.7 | 35.0 | 26.0 | 16.5 | 8.4 | 24.2 |
| Highest Mean Min. Temperature (F) | 13.2 | 16.2 | 22.9 | 28.6 | 33.5 | 40.3 | 45.3 | 45.5 | 39.2 | 31.7 | 21.0 | 16.9 | 26.9 |
| Year Highest Occurred | 1980 | 1986 | 1989 | 1989 | 1989 | 1988 | 1984 | 1982 | 1990 | 1972 | 1973 | 1980 | 1981 |
| Lowest Mean Min. Temperature (F) | -0.7 | -0.2 | 8.0 | 16.6 | 27.1 | 33.2 | 38.6 | 36.4 | 31.2 | 17.9 | 10.3 | 3.6 | 21.2 |
| Year Lowest Occurred | 1966 | 1964 | 1969 | 1973 | 1971 | 1975 | 1962 | 1975 | 1971 | 1976 | 1979 | 1990 | 1964 |
| Mean Precipitation (in.) | 1.54 | 1.48 | 2.07 | 1.89 | 1.79 | 1.30 | 2.60 | 2.86 | 2.42 | 2.21 | 1.75 | 1.70 | 23.61 |
| Highest Precipitation (in.) | 4.07 | 3.23 | 4.14 | 4.49 | 3.25 | 3.60 | 4.73 | 6.80 | 4.54 | 6.20 | 4.98 | 5.09 | 30.08 |
| Year Highest Occurred | 1979 | 1987 | 1961 | 1990 | 1980 | 1984 | 1981 | 1963 | 1982 | 1969 | 1986 | 1983 | 1984 |
| Lowest Precipitation (in.) | 0.33 | 0.28 | 0.62 | 0.42 | 0.13 | 0.08 | 0.82 | 0.53 | 0.12 | 0.04 | 0.24 | 0.09 | 14.57 |
| Year Lowest Occurred | 1986 | 1972 | 1968 | 1989 | 1974 | 1980 | 1961 | 1974 | 1979 | 1964 | 1989 | 1976 | 1989 |
| Heating Degree Days (F) | 1336. | 1126. | 1101. | 819. | 574. | 310. | 152. | 204. | 390. | 679. | 1005. | 1290. | 8986. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |