| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 29.9 | 35.8 | 42.4 | 52.6 | 61.6 | 70.6 | 79.7 | 79.2 | 67.5 | 56.8 | 40.6 | 31.2 | 54.0 |
| Highest Mean Max. Temperature (F) | 38.5 | 42.6 | 53.5 | 63.3 | 68.4 | 78.5 | 85.5 | 88.0 | 78.3 | 65.3 | 46.4 | 40.5 | 57.4 |
| Year Highest Occurred | 1981 | 1984 | 1986 | 1987 | 1966 | 1961 | 1985 | 1961 | 1990 | 1988 | 1989 | 1980 | 1988 |
| Lowest Mean Max. Temperature (F) | 15.2 | 20.4 | 33.4 | 38.6 | 54.7 | 65.5 | 73.3 | 72.8 | 54.3 | 48.1 | 26.9 | 19.1 | 50.5 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1975 | 1974 | 1967 | 1986 | 1987 | 1965 | 1969 | 1985 | 1983 | 1975 |
| Mean Temperature (F) | 18.5 | 24.1 | 30.3 | 38.8 | 47.2 | 55.3 | 61.5 | 60.6 | 50.6 | 41.0 | 28.4 | 20.0 | 39.7 |
| Highest Mean Temperature (F) | 26.9 | 32.8 | 39.7 | 44.1 | 50.9 | 60.7 | 65.6 | 66.3 | 57.7 | 46.8 | 34.2 | 28.7 | 41.7 |
| Year Highest Occurred | 1990 | 1963 | 1986 | 1987 | 1966 | 1988 | 1985 | 1971 | 1967 | 1988 | 1990 | 1980 | 1988 |
| Lowest Mean Temperature (F) | 1.3 | 7.3 | 20.1 | 28.8 | 42.8 | 52.5 | 55.8 | 54.4 | 42.5 | 36.2 | 15.2 | 7.4 | 36.7 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1975 | 1974 | 1964 | 1986 | 1987 | 1965 | 1969 | 1985 | 1983 | 1985 |
| Mean Min. Temperature (F) | 7.1 | 12.4 | 18.1 | 24.9 | 32.7 | 40.0 | 43.3 | 42.0 | 33.6 | 25.0 | 16.2 | 8.8 | 25.3 |
| Highest Mean Min. Temperature (F) | 16.8 | 23.0 | 25.8 | 28.7 | 35.9 | 43.1 | 48.5 | 46.0 | 39.1 | 29.4 | 22.8 | 18.4 | 26.9 |
| Year Highest Occurred | 1990 | 1963 | 1986 | 1969 | 1963 | 1970 | 1975 | 1983 | 1966 | 1962 | 1990 | 1962 | 1981 |
| Lowest Mean Min. Temperature (F) | -12.7 | -5.9 | 6.8 | 18.9 | 30.0 | 36.7 | 38.3 | 36.0 | 28.9 | 18.5 | 3.5 | -4.3 | 21.7 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1975 | 1982 | 1990 | 1986 | 1987 | 1984 | 1987 | 1985 | 1983 | 1985 |
| Mean Precipitation (in.) | 0.50 | 0.32 | 0.53 | 0.75 | 1.82 | 1.76 | 1.17 | 1.23 | 1.10 | 0.64 | 0.44 | 0.44 | 10.70 |
| Highest Precipitation (in.) | 1.67 | 0.90 | 1.63 | 1.87 | 5.90 | 3.98 | 3.21 | 3.36 | 3.27 | 2.90 | 1.02 | 1.09 | 19.04 |
| Year Highest Occurred | 1969 | 1986 | 1982 | 1975 | 1980 | 1963 | 1987 | 1989 | 1965 | 1975 | 1973 | 1977 | 1980 |
| Lowest Precipitation (in.) | 0.02 | 0.02 | 0.04 | 0.00 | 0.40 | 0.29 | 0.08 | 0.00 | 0.05 | 0.00 | 0.04 | 0.10 | 6.46 |
| Year Lowest Occurred | 1986 | 1985 | 1985 | 1977 | 1966 | 1985 | 1968 | 1988 | 1979 | 1987 | 1984 | 1976 | 1979 |
| Heating Degree Days (F) | 1442. | 1145. | 1076. | 786. | 552. | 295. | 133. | 172. | 438. | 744. | 1098. | 1395. | 9276. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 25. | 35. | 6. | 0. | 0. | 0. | 66. |