| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 24.9 | 32.3 | 39.6 | 48.5 | 59.8 | 69.0 | 78.2 | 77.3 | 66.7 | 54.9 | 36.7 | 25.5 | 51.1 |
| Highest Mean Max. Temperature (F) | 34.1 | 38.3 | 46.3 | 59.7 | 66.3 | 79.4 | 85.7 | 83.8 | 77.9 | 64.8 | 42.5 | 36.2 | 55.1 |
| Year Highest Occurred | 1981 | 1983 | 1986 | 1987 | 1966 | 1988 | 1988 | 1981 | 1975 | 1988 | 1981 | 1980 | 1988 |
| Lowest Mean Max. Temperature (F) | 14.1 | 22.7 | 31.1 | 37.2 | 55.5 | 63.2 | 70.1 | 69.9 | 55.1 | 47.1 | 28.1 | 15.6 | 49.0 |
| Year Lowest Occurred | 1962 | 1989 | 1965 | 1975 | 1975 | 1969 | 1983 | 1968 | 1965 | 1969 | 1985 | 1990 | 1968 |
| Mean Temperature (F) | 11.7 | 17.7 | 24.7 | 33.9 | 43.8 | 51.4 | 57.9 | 56.6 | 47.5 | 37.3 | 23.5 | 12.7 | 34.9 |
| Highest Mean Temperature (F) | 19.5 | 23.7 | 32.5 | 39.5 | 48.2 | 57.6 | 61.0 | 60.4 | 54.1 | 44.5 | 28.1 | 22.9 | 37.6 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1987 | 1987 | 1988 | 1989 | 1971 | 1990 | 1988 | 1981 | 1980 | 1981 |
| Lowest Mean Temperature (F) | 0.3 | 8.2 | 11.6 | 25.7 | 39.8 | 48.5 | 54.5 | 53.0 | 38.1 | 32.1 | 16.3 | 1.9 | 32.4 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1975 | 1965 | 1969 | 1972 | 1965 | 1965 | 1969 | 1975 | 1990 | 1964 |
| Mean Min. Temperature (F) | -1.5 | 3.0 | 9.8 | 19.1 | 27.8 | 33.8 | 37.7 | 35.8 | 28.2 | 19.6 | 10.4 | -0.2 | 18.6 |
| Highest Mean Min. Temperature (F) | 8.2 | 12.2 | 18.6 | 23.2 | 33.9 | 36.2 | 42.1 | 42.5 | 35.9 | 24.7 | 16.9 | 9.6 | 21.1 |
| Year Highest Occurred | 1967 | 1961 | 1986 | 1969 | 1971 | 1986 | 1984 | 1983 | 1963 | 1983 | 1983 | 1980 | 1981 |
| Lowest Mean Min. Temperature (F) | -13.8 | -9.4 | -7.9 | 13.8 | 23.7 | 30.5 | 34.4 | 30.2 | 21.0 | 12.8 | 0.8 | -11.9 | 15.4 |
| Year Lowest Occurred | 1979 | 1985 | 1965 | 1970 | 1965 | 1979 | 1965 | 1988 | 1965 | 1976 | 1979 | 1990 | 1965 |
| Mean Precipitation (in.) | 1.33 | 0.87 | 1.05 | 1.01 | 1.91 | 2.18 | 1.81 | 1.58 | 1.63 | 1.14 | 1.23 | 1.27 | 17.01 |
| Highest Precipitation (in.) | 2.69 | 1.92 | 3.07 | 2.22 | 3.74 | 4.71 | 4.30 | 4.03 | 4.04 | 3.18 | 2.64 | 3.44 | 22.87 |
| Year Highest Occurred | 1965 | 1962 | 1974 | 1988 | 1963 | 1968 | 1987 | 1968 | 1961 | 1967 | 1968 | 1964 | 1968 |
| Lowest Precipitation (in.) | 0.16 | 0.19 | 0.20 | 0.25 | 0.62 | 0.65 | 0.60 | 0.11 | 0.19 | 0.00 | 0.34 | 0.06 | 11.48 |
| Year Lowest Occurred | 1961 | 1977 | 1969 | 1977 | 1986 | 1961 | 1963 | 1969 | 1987 | 1987 | 1974 | 1973 | 1988 |
| Heating Degree Days (F) | 1652. | 1324. | 1249. | 933. | 657. | 408. | 226. | 265. | 525. | 859. | 1245. | 1621. | 10964. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 6. | 5. | 0. | 0. | 0. | 0. | 11. |