| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 30.3 | 36.6 | 46.6 | 57.7 | 68.5 | 78.8 | 89.0 | 86.9 | 76.1 | 63.2 | 45.9 | 32.9 | 59.4 |
| Highest Mean Max. Temperature (F) | 38.4 | 49.2 | 56.8 | 66.7 | 76.4 | 86.1 | 92.4 | 92.2 | 83.6 | 71.9 | 51.9 | 42.0 | 62.6 |
| Year Highest Occurred | 1983 | 1963 | 1986 | 1987 | 1969 | 1977 | 1989 | 1981 | 1979 | 1988 | 1976 | 1981 | 1981 |
| Lowest Mean Max. Temperature (F) | 21.7 | 26.3 | 35.2 | 49.7 | 62.5 | 71.8 | 84.2 | 79.1 | 66.3 | 54.3 | 36.2 | 22.2 | 55.0 |
| Year Lowest Occurred | 1979 | 1985 | 1985 | 1975 | 1975 | 1967 | 1986 | 1968 | 1965 | 1984 | 1985 | 1985 | 1985 |
| Mean Temperature (F) | 20.5 | 25.9 | 35.2 | 45.1 | 54.7 | 63.4 | 71.8 | 69.6 | 59.6 | 47.7 | 35.0 | 23.5 | 46.0 |
| Highest Mean Temperature (F) | 31.1 | 37.9 | 44.7 | 51.1 | 60.1 | 69.5 | 74.7 | 75.5 | 65.7 | 53.9 | 40.2 | 32.5 | 49.0 |
| Year Highest Occurred | 1983 | 1963 | 1986 | 1990 | 1969 | 1977 | 1989 | 1982 | 1990 | 1988 | 1981 | 1981 | 1983 |
| Lowest Mean Temperature (F) | 10.2 | 13.3 | 23.2 | 38.7 | 49.2 | 58.8 | 68.2 | 64.5 | 52.3 | 41.4 | 27.6 | 14.0 | 41.8 |
| Year Lowest Occurred | 1979 | 1985 | 1964 | 1970 | 1975 | 1975 | 1986 | 1968 | 1965 | 1970 | 1985 | 1990 | 1985 |
| Mean Min. Temperature (F) | 10.6 | 15.1 | 23.7 | 32.4 | 41.0 | 47.9 | 54.6 | 52.2 | 43.0 | 32.2 | 24.1 | 14.1 | 32.6 |
| Highest Mean Min. Temperature (F) | 23.7 | 28.0 | 32.6 | 38.1 | 46.8 | 52.8 | 58.1 | 61.5 | 49.5 | 39.3 | 28.9 | 24.3 | 38.5 |
| Year Highest Occurred | 1983 | 1986 | 1986 | 1990 | 1963 | 1988 | 1984 | 1982 | 1983 | 1983 | 1981 | 1977 | 1983 |
| Lowest Mean Min. Temperature (F) | -1.4 | 0.2 | 10.7 | 26.5 | 35.8 | 44.0 | 50.7 | 45.5 | 37.3 | 25.9 | 17.8 | 3.5 | 28.6 |
| Year Lowest Occurred | 1979 | 1985 | 1964 | 1967 | 1975 | 1980 | 1980 | 1980 | 1970 | 1970 | 1979 | 1990 | 1985 |
| Mean Precipitation (in.) | 1.09 | 1.26 | 1.59 | 1.80 | 1.73 | 1.48 | 0.72 | 0.93 | 1.59 | 1.65 | 1.46 | 1.27 | 16.57 |
| Highest Precipitation (in.) | 3.45 | 3.60 | 3.57 | 5.16 | 4.34 | 4.46 | 2.01 | 4.76 | 5.38 | 4.09 | 5.40 | 4.71 | 32.76 |
| Year Highest Occurred | 1980 | 1986 | 1982 | 1986 | 1987 | 1964 | 1983 | 1977 | 1973 | 1981 | 1965 | 1983 | 1983 |
| Lowest Precipitation (in.) | 0.11 | 0.11 | 0.03 | 0.19 | 0.01 | 0.06 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | 0.02 | 6.31 |
| Year Lowest Occurred | 1961 | 1964 | 1965 | 1977 | 1969 | 1977 | 1988 | 1985 | 1974 | 1988 | 1976 | 1986 | 1966 |
| Heating Degree Days (F) | 1380. | 1095. | 924. | 597. | 325. | 113. | 0. | 30. | 202. | 536. | 900. | 1287. | 7389. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 6. | 65. | 213. | 173. | 40. | 0. | 0. | 0. | 497. |