| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 31.4 | 38.0 | 47.8 | 59.2 | 69.7 | 80.4 | 90.4 | 88.4 | 77.0 | 63.5 | 45.9 | 33.3 | 60.4 |
| Highest Mean Max. Temperature (F) | 38.4 | 49.6 | 56.6 | 69.9 | 78.7 | 89.2 | 95.9 | 92.5 | 85.5 | 74.2 | 52.2 | 40.2 | 63.0 |
| Year Highest Occurred | 1961 | 1963 | 1986 | 1987 | 1969 | 1988 | 1989 | 1970 | 1990 | 1988 | 1962 | 1976 | 1988 |
| Lowest Mean Max. Temperature (F) | 21.9 | 28.6 | 37.1 | 51.1 | 63.5 | 73.2 | 86.4 | 80.1 | 67.3 | 53.8 | 37.6 | 23.6 | 56.5 |
| Year Lowest Occurred | 1979 | 1985 | 1964 | 1975 | 1975 | 1964 | 1982 | 1968 | 1965 | 1984 | 1985 | 1985 | 1984 |
| Mean Temperature (F) | 22.3 | 27.8 | 36.4 | 45.7 | 54.5 | 63.5 | 71.7 | 70.2 | 60.1 | 48.7 | 35.8 | 24.4 | 46.8 |
| Highest Mean Temperature (F) | 30.1 | 38.6 | 44.8 | 52.9 | 60.5 | 70.3 | 76.1 | 73.3 | 68.3 | 57.4 | 40.3 | 32.7 | 49.1 |
| Year Highest Occurred | 1978 | 1963 | 1986 | 1987 | 1969 | 1988 | 1988 | 1961 | 1990 | 1988 | 1966 | 1977 | 1981 |
| Lowest Mean Temperature (F) | 12.7 | 16.5 | 26.3 | 40.3 | 49.2 | 59.1 | 68.6 | 62.4 | 52.0 | 42.7 | 29.1 | 14.7 | 43.7 |
| Year Lowest Occurred | 1979 | 1985 | 1976 | 1975 | 1975 | 1975 | 1965 | 1968 | 1965 | 1969 | 1985 | 1990 | 1985 |
| Mean Min. Temperature (F) | 13.2 | 17.6 | 25.0 | 32.2 | 39.3 | 46.5 | 52.9 | 51.9 | 43.1 | 33.8 | 25.5 | 15.5 | 33.0 |
| Highest Mean Min. Temperature (F) | 23.5 | 27.5 | 33.0 | 36.9 | 43.7 | 51.4 | 57.2 | 57.1 | 51.0 | 40.5 | 30.1 | 25.6 | 35.8 |
| Year Highest Occurred | 1978 | 1963 | 1986 | 1990 | 1987 | 1988 | 1961 | 1961 | 1990 | 1988 | 1966 | 1977 | 1981 |
| Lowest Mean Min. Temperature (F) | 3.3 | 4.4 | 14.5 | 27.5 | 34.9 | 43.5 | 49.8 | 44.6 | 34.8 | 29.0 | 19.9 | 4.0 | 29.8 |
| Year Lowest Occurred | 1985 | 1985 | 1976 | 1970 | 1975 | 1975 | 1972 | 1968 | 1968 | 1970 | 1979 | 1990 | 1985 |
| Mean Precipitation (in.) | 1.46 | 1.53 | 1.97 | 2.20 | 2.19 | 1.48 | 0.87 | 1.04 | 1.50 | 1.84 | 1.72 | 1.63 | 19.43 |
| Highest Precipitation (in.) | 4.18 | 3.88 | 5.00 | 5.81 | 5.69 | 4.87 | 2.94 | 4.74 | 5.41 | 5.03 | 3.91 | 5.87 | 38.99 |
| Year Highest Occurred | 1980 | 1986 | 1982 | 1986 | 1980 | 1964 | 1983 | 1968 | 1982 | 1981 | 1965 | 1983 | 1983 |
| Lowest Precipitation (in.) | 0.05 | 0.15 | 0.19 | 0.62 | 0.12 | 0.11 | 0.00 | 0.01 | 0.02 | 0.00 | 0.01 | 0.05 | 11.41 |
| Year Lowest Occurred | 1961 | 1988 | 1965 | 1977 | 1972 | 1977 | 1988 | 1985 | 1974 | 1988 | 1976 | 1976 | 1966 |
| Heating Degree Days (F) | 1324. | 1042. | 887. | 579. | 330. | 118. | 5. | 24. | 204. | 505. | 876. | 1259. | 7153. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 73. | 213. | 185. | 57. | 0. | 0. | 0. | 528. |