| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 16.8 | 23.8 | 35.8 | 52.2 | 66.4 | 76.1 | 80.9 | 78.2 | 67.3 | 55.8 | 37.4 | 20.9 | 51.0 |
| Highest Mean Max. Temperature (F) | 26.8 | 37.6 | 46.4 | 61.5 | 77.7 | 82.5 | 85.8 | 85.2 | 74.6 | 67.1 | 45.2 | 29.0 | 54.9 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1988 | 1976 | 1976 | 1963 | 1981 | 1986 | 1987 |
| Lowest Mean Max. Temperature (F) | 7.1 | 13.0 | 25.4 | 42.4 | 59.4 | 69.6 | 75.5 | 72.5 | 55.8 | 48.6 | 28.3 | 8.6 | 48.0 |
| Year Lowest Occurred | 1982 | 1989 | 1965 | 1975 | 1967 | 1969 | 1971 | 1985 | 1965 | 1987 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 5.8 | 12.1 | 24.9 | 40.7 | 54.5 | 64.7 | 69.9 | 67.3 | 56.9 | 45.2 | 28.9 | 11.7 | 40.2 |
| Highest Mean Temperature (F) | 17.1 | 27.0 | 34.5 | 48.2 | 64.5 | 69.5 | 73.3 | 73.9 | 61.3 | 55.0 | 35.9 | 20.3 | 44.5 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1983 | 1983 | 1978 | 1963 | 1981 | 1982 | 1987 |
| Lowest Mean Temperature (F) | -5.1 | 0.5 | 13.3 | 34.0 | 47.1 | 58.3 | 65.3 | 62.8 | 48.0 | 38.9 | 20.0 | -1.0 | 37.4 |
| Year Lowest Occurred | 1966 | 1989 | 1965 | 1975 | 1967 | 1969 | 1971 | 1977 | 1965 | 1988 | 1985 | 1983 | 1989 |
| Mean Min. Temperature (F) | -5.3 | 0.4 | 14.0 | 29.2 | 42.5 | 53.3 | 58.9 | 56.3 | 46.4 | 34.5 | 20.3 | 2.4 | 29.4 |
| Highest Mean Min. Temperature (F) | 7.3 | 16.4 | 25.2 | 35.9 | 51.2 | 56.5 | 62.9 | 63.0 | 50.9 | 42.8 | 26.6 | 13.5 | 34.0 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1988 | 1983 | 1983 | 1978 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -17.3 | -12.1 | 1.1 | 24.9 | 34.8 | 47.0 | 53.9 | 52.0 | 40.1 | 28.4 | 11.7 | -10.5 | 26.3 |
| Year Lowest Occurred | 1966 | 1989 | 1965 | 1961 | 1967 | 1969 | 1967 | 1967 | 1965 | 1988 | 1985 | 1983 | 1967 |
| Mean Precipitation (in.) | 0.77 | 0.59 | 1.52 | 2.05 | 3.06 | 4.16 | 3.81 | 3.44 | 2.98 | 2.34 | 1.19 | 0.75 | 26.66 |
| Highest Precipitation (in.) | 3.38 | 1.91 | 3.14 | 5.04 | 6.96 | 10.78 | 6.66 | 8.27 | 7.65 | 8.50 | 3.27 | 2.30 | 35.57 |
| Year Highest Occurred | 1975 | 1979 | 1985 | 1986 | 1982 | 1968 | 1972 | 1989 | 1965 | 1971 | 1977 | 1968 | 1968 |
| Lowest Precipitation (in.) | 0.02 | 0.02 | 0.22 | 0.07 | 0.69 | 0.72 | 1.72 | 0.30 | 0.21 | 0.05 | 0.19 | 0.13 | 13.13 |
| Year Lowest Occurred | 1981 | 1988 | 1969 | 1987 | 1976 | 1987 | 1989 | 1969 | 1966 | 1964 | 1984 | 1975 | 1976 |
| Heating Degree Days (F) | 1835. | 1481. | 1243. | 729. | 344. | 84. | 17. | 56. | 252. | 614. | 1083. | 1652. | 9390. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 19. | 75. | 169. | 127. | 9. | 0. | 0. | 0. | 399. |