| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 28.5 | 33.5 | 40.7 | 53.2 | 64.3 | 74.1 | 83.8 | 82.2 | 71.0 | 58.9 | 40.3 | 29.7 | 55.0 |
| Highest Mean Max. Temperature (F) | 36.9 | 44.3 | 49.3 | 70.4 | 73.0 | 83.9 | 89.6 | 90.0 | 79.7 | 71.2 | 48.7 | 36.6 | 60.3 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1988 | 1988 | 1988 | 1989 | 1981 | 1990 | 1988 | 1976 | 1980 | 1988 |
| Lowest Mean Max. Temperature (F) | 18.5 | 25.7 | 31.6 | 41.7 | 58.1 | 66.0 | 77.8 | 73.6 | 62.0 | 51.5 | 32.4 | 21.9 | 52.1 |
| Year Lowest Occurred | 1979 | 1985 | 1971 | 1975 | 1977 | 1964 | 1982 | 1968 | 1961 | 1970 | 1985 | 1983 | 1971 |
| Mean Temperature (F) | 19.0 | 23.5 | 30.2 | 40.6 | 50.3 | 59.2 | 67.8 | 66.2 | 55.6 | 44.9 | 30.5 | 20.2 | 42.3 |
| Highest Mean Temperature (F) | 27.6 | 34.1 | 39.0 | 50.7 | 55.7 | 66.6 | 73.2 | 72.0 | 64.2 | 54.4 | 35.6 | 27.5 | 45.4 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1988 | 1987 | 1988 | 1989 | 1981 | 1990 | 1988 | 1965 | 1980 | 1988 |
| Lowest Mean Temperature (F) | 9.6 | 12.7 | 22.0 | 32.2 | 46.0 | 53.5 | 64.5 | 59.6 | 48.1 | 38.7 | 21.8 | 12.3 | 39.8 |
| Year Lowest Occurred | 1979 | 1985 | 1964 | 1975 | 1977 | 1964 | 1983 | 1968 | 1970 | 1969 | 1985 | 1990 | 1985 |
| Mean Min. Temperature (F) | 9.5 | 13.4 | 19.7 | 28.1 | 36.3 | 44.3 | 51.6 | 50.1 | 40.2 | 30.9 | 20.7 | 10.7 | 29.6 |
| Highest Mean Min. Temperature (F) | 18.2 | 23.9 | 28.6 | 35.5 | 42.5 | 50.6 | 56.8 | 55.0 | 48.7 | 37.5 | 26.8 | 18.3 | 32.3 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1990 | 1987 | 1986 | 1989 | 1961 | 1990 | 1988 | 1965 | 1980 | 1986 |
| Lowest Mean Min. Temperature (F) | 0.7 | -0.3 | 10.8 | 22.3 | 32.5 | 40.8 | 47.2 | 45.3 | 33.6 | 25.5 | 11.2 | 1.7 | 26.4 |
| Year Lowest Occurred | 1979 | 1985 | 1964 | 1982 | 1990 | 1975 | 1972 | 1975 | 1970 | 1969 | 1985 | 1990 | 1985 |
| Mean Precipitation (in.) | 2.17 | 1.47 | 1.36 | 1.15 | 1.71 | 1.30 | 0.78 | 0.92 | 0.93 | 0.80 | 1.60 | 2.03 | 16.22 |
| Highest Precipitation (in.) | 12.18 | 3.53 | 3.20 | 4.03 | 5.40 | 4.15 | 3.40 | 3.71 | 3.57 | 2.17 | 4.48 | 8.73 | 23.38 |
| Year Highest Occurred | 1969 | 1976 | 1983 | 1978 | 1980 | 1963 | 1987 | 1968 | 1961 | 1979 | 1973 | 1964 | 1982 |
| Lowest Precipitation (in.) | 0.12 | 0.00 | 0.18 | 0.10 | 0.14 | 0.05 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.08 | 9.45 |
| Year Lowest Occurred | 1961 | 1988 | 1969 | 1974 | 1974 | 1974 | 1968 | 1969 | 1987 | 1990 | 1976 | 1986 | 1974 |
| Heating Degree Days (F) | 1426. | 1162. | 1079. | 732. | 456. | 212. | 37. | 86. | 311. | 623. | 1035. | 1389. | 8548. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 38. | 124. | 123. | 29. | 0. | 0. | 0. | 314. |