| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 12.2 | 18.2 | 31.2 | 51.0 | 67.5 | 75.8 | 80.1 | 79.4 | 68.1 | 55.5 | 33.7 | 16.9 | 49.1 |
| Highest Mean Max. Temperature (F) | 26.4 | 31.1 | 42.6 | 63.6 | 79.4 | 87.8 | 85.3 | 88.3 | 75.6 | 69.1 | 43.8 | 27.7 | 53.8 |
| Year Highest Occurred | 1990 | 1984 | 1981 | 1980 | 1977 | 1988 | 1989 | 1961 | 1967 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | -3.2 | 4.1 | 22.9 | 36.1 | 56.7 | 66.4 | 74.1 | 72.2 | 55.7 | 47.1 | 21.0 | 3.4 | 45.0 |
| Year Lowest Occurred | 1966 | 1979 | 1965 | 1979 | 1974 | 1969 | 1971 | 1977 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 1.7 | 7.6 | 20.5 | 39.0 | 53.3 | 62.4 | 66.7 | 64.7 | 54.4 | 43.2 | 24.0 | 6.7 | 37.0 |
| Highest Mean Temperature (F) | 16.0 | 22.0 | 33.4 | 48.1 | 64.6 | 71.6 | 71.1 | 72.0 | 60.4 | 54.0 | 34.0 | 17.2 | 42.2 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1977 | 1988 | 1989 | 1983 | 1967 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Temperature (F) | -13.6 | -6.2 | 9.9 | 27.2 | 46.2 | 53.6 | 61.5 | 58.0 | 45.6 | 36.6 | 11.1 | -8.3 | 33.5 |
| Year Lowest Occurred | 1966 | 1979 | 1970 | 1979 | 1979 | 1969 | 1972 | 1977 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -8.8 | -3.1 | 9.7 | 27.0 | 39.1 | 48.9 | 53.3 | 49.9 | 40.6 | 30.8 | 14.3 | -3.5 | 24.9 |
| Highest Mean Min. Temperature (F) | 7.0 | 13.4 | 25.0 | 33.1 | 49.7 | 55.4 | 58.0 | 56.2 | 45.2 | 38.8 | 24.2 | 8.5 | 30.5 |
| Year Highest Occurred | 1975 | 1987 | 1973 | 1987 | 1977 | 1988 | 1966 | 1984 | 1967 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -23.9 | -16.4 | -4.6 | 18.3 | 32.5 | 40.7 | 48.7 | 43.7 | 34.7 | 22.2 | 1.2 | -19.9 | 21.9 |
| Year Lowest Occurred | 1966 | 1979 | 1970 | 1979 | 1983 | 1969 | 1972 | 1977 | 1974 | 1976 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.45 | 0.41 | 0.56 | 1.15 | 2.18 | 2.85 | 2.73 | 2.60 | 1.96 | 1.13 | 0.48 | 0.46 | 16.96 |
| Highest Precipitation (in.) | 1.45 | 1.41 | 1.83 | 4.09 | 7.65 | 5.74 | 9.24 | 5.59 | 4.56 | 3.83 | 1.50 | 1.29 | 25.60 |
| Year Highest Occurred | 1969 | 1987 | 1971 | 1967 | 1974 | 1985 | 1968 | 1968 | 1973 | 1984 | 1973 | 1963 | 1968 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0.72 | 0.65 | 0.21 | 0.23 | 0.19 | 0.02 | 0.00 | 9.01 |
| Year Lowest Occurred | 1985 | 1985 | 1985 | 1980 | 1976 | 1988 | 1976 | 1961 | 1967 | 1990 | 1976 | 1984 | 1988 |
| Heating Degree Days (F) | 1962. | 1607. | 1380. | 780. | 386. | 147. | 48. | 124. | 326. | 676. | 1230. | 1807. | 10473. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 23. | 69. | 101. | 115. | 8. | 0. | 0. | 0. | 316. |