| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 10.1 | 14.4 | 25.7 | 38.0 | 53.2 | 63.6 | 66.8 | 62.0 | 51.1 | 31.8 | 16.8 | 11.7 | 37.1 |
| Highest Mean Max. Temperature (F) | 35.8 | 30.0 | 38.2 | 44.9 | 60.8 | 70.9 | 71.2 | 70.7 | 57.0 | 42.4 | 31.2 | 29.2 | 41.3 |
| Year Highest Occurred | 1981 | 1977 | 1965 | 1990 | 1981 | 1969 | 1990 | 1977 | 1974 | 1969 | 1979 | 1985 | 1978 |
| Lowest Mean Max. Temperature (F) | -7.1 | -3.7 | 11.8 | 26.9 | 43.6 | 55.9 | 60.6 | 55.6 | 44.0 | 22.1 | 1.0 | -12.4 | 33.5 |
| Year Lowest Occurred | 1971 | 1979 | 1971 | 1985 | 1964 | 1963 | 1981 | 1969 | 1983 | 1982 | 1963 | 1980 | 1971 |
| Mean Temperature (F) | 1.1 | 4.1 | 13.2 | 26.3 | 41.1 | 51.2 | 54.5 | 50.5 | 40.6 | 22.5 | 8.0 | 3.0 | 26.3 |
| Highest Mean Temperature (F) | 26.8 | 19.9 | 30.4 | 33.0 | 47.2 | 55.7 | 56.9 | 55.8 | 45.7 | 33.1 | 23.0 | 22.1 | 30.2 |
| Year Highest Occurred | 1981 | 1977 | 1965 | 1990 | 1981 | 1969 | 1990 | 1977 | 1965 | 1969 | 1979 | 1985 | 1981 |
| Lowest Mean Temperature (F) | -17.9 | -16.0 | -1.6 | 15.5 | 32.9 | 46.2 | 51.2 | 43.5 | 35.2 | 13.9 | -5.4 | -17.8 | 22.1 |
| Year Lowest Occurred | 1971 | 1979 | 1971 | 1985 | 1964 | 1963 | 1981 | 1969 | 1983 | 1982 | 1963 | 1980 | 1971 |
| Mean Min. Temperature (F) | -7.9 | -6.1 | 0.7 | 14.5 | 28.8 | 38.6 | 42.2 | 38.9 | 30.0 | 13.2 | -0.8 | -5.8 | 15.5 |
| Highest Mean Min. Temperature (F) | 17.7 | 9.8 | 22.6 | 21.0 | 33.6 | 41.3 | 44.7 | 42.9 | 36.3 | 23.7 | 14.7 | 14.9 | 19.7 |
| Year Highest Occurred | 1981 | 1977 | 1965 | 1990 | 1981 | 1984 | 1985 | 1979 | 1965 | 1969 | 1979 | 1985 | 1981 |
| Lowest Mean Min. Temperature (F) | -28.6 | -28.3 | -14.9 | 3.5 | 22.2 | 34.7 | 38.8 | 31.3 | 24.9 | 2.9 | -12.9 | -23.1 | 10.6 |
| Year Lowest Occurred | 1971 | 1979 | 1971 | 1972 | 1964 | 1970 | 1968 | 1969 | 1970 | 1970 | 1975 | 1980 | 1971 |
| Mean Precipitation (in.) | 0.70 | 0.51 | 0.57 | 0.38 | 0.80 | 2.47 | 3.19 | 2.41 | 1.57 | 1.06 | 0.94 | 0.90 | 15.50 |
| Highest Precipitation (in.) | 1.87 | 2.21 | 3.12 | 1.84 | 2.85 | 5.10 | 7.67 | 4.77 | 4.37 | 3.32 | 5.29 | 3.45 | 27.69 |
| Year Highest Occurred | 1975 | 1966 | 1967 | 1967 | 1968 | 1970 | 1986 | 1990 | 1990 | 1981 | 1970 | 1984 | 1967 |
| Lowest Precipitation (in.) | 0.05 | 0.00 | 0.00 | 0.00 | 0.11 | 0.08 | 0.93 | 0.56 | 0.09 | 0.16 | 0.10 | 0.09 | 8.56 |
| Year Lowest Occurred | 1974 | 1973 | 1984 | 1990 | 1972 | 1969 | 1989 | 1982 | 1969 | 1987 | 1962 | 1975 | 1987 |
| Heating Degree Days (F) | 1981. | 1705. | 1606. | 1161. | 741. | 414. | 326. | 450. | 732. | 1318. | 1710. | 1922. | 14066. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |