| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 24.1 | 28.5 | 40.3 | 56.0 | 69.6 | 78.4 | 83.2 | 79.6 | 70.9 | 59.7 | 43.1 | 28.3 | 55.1 |
| Highest Mean Max. Temperature (F) | 35.1 | 38.6 | 50.2 | 63.8 | 78.7 | 85.5 | 87.8 | 85.1 | 75.6 | 69.8 | 50.3 | 36.3 | 60.0 |
| Year Highest Occurred | 1990 | 1984 | 1968 | 1977 | 1977 | 1988 | 1983 | 1969 | 1987 | 1963 | 1990 | 1982 | 1987 |
| Lowest Mean Max. Temperature (F) | 13.5 | 19.3 | 31.9 | 47.7 | 62.3 | 69.7 | 78.3 | 75.7 | 66.9 | 51.8 | 36.6 | 18.8 | 52.4 |
| Year Lowest Occurred | 1963 | 1979 | 1965 | 1975 | 1973 | 1969 | 1978 | 1979 | 1975 | 1988 | 1985 | 1985 | 1972 |
| Mean Temperature (F) | 13.5 | 17.3 | 29.7 | 44.7 | 57.0 | 66.1 | 71.0 | 67.6 | 58.8 | 48.2 | 33.9 | 19.3 | 43.9 |
| Highest Mean Temperature (F) | 25.2 | 29.4 | 38.6 | 50.6 | 64.7 | 70.9 | 74.6 | 71.8 | 62.4 | 56.3 | 39.5 | 28.4 | 47.9 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1985 | 1977 | 1971 | 1983 | 1988 | 1978 | 1963 | 1975 | 1987 | 1987 |
| Lowest Mean Temperature (F) | 2.7 | 8.2 | 22.8 | 37.8 | 50.4 | 59.3 | 67.1 | 64.3 | 54.6 | 41.3 | 25.7 | 8.7 | 41.9 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1983 | 1969 | 1962 | 1967 | 1974 | 1988 | 1976 | 1985 | 1972 |
| Mean Min. Temperature (F) | 3.0 | 6.1 | 19.0 | 33.3 | 44.5 | 53.7 | 58.7 | 55.6 | 46.7 | 36.7 | 24.5 | 10.2 | 32.7 |
| Highest Mean Min. Temperature (F) | 15.2 | 20.2 | 29.3 | 39.0 | 51.7 | 58.5 | 61.9 | 60.3 | 50.6 | 45.5 | 29.5 | 20.7 | 35.7 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1986 | 1962 | 1971 | 1986 | 1988 | 1971 | 1971 | 1983 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -8.4 | -3.6 | 11.1 | 27.9 | 38.0 | 48.6 | 54.9 | 50.6 | 41.2 | 30.5 | 14.3 | -1.7 | 30.2 |
| Year Lowest Occurred | 1977 | 1967 | 1975 | 1975 | 1967 | 1982 | 1965 | 1967 | 1974 | 1987 | 1976 | 1976 | 1976 |
| Mean Precipitation (in.) | 1.30 | 1.16 | 2.08 | 2.63 | 3.38 | 3.59 | 3.51 | 3.67 | 3.62 | 2.32 | 2.06 | 1.56 | 30.88 |
| Highest Precipitation (in.) | 3.28 | 2.83 | 4.98 | 4.86 | 8.73 | 9.15 | 7.48 | 8.30 | 9.22 | 4.74 | 5.37 | 3.47 | 39.86 |
| Year Highest Occurred | 1967 | 1981 | 1979 | 1973 | 1970 | 1967 | 1982 | 1980 | 1965 | 1967 | 1985 | 1968 | 1984 |
| Lowest Precipitation (in.) | 0.09 | 0.00 | 0.23 | 0.73 | 0.95 | 0.76 | 1.57 | 0.30 | 0.42 | 0.45 | 0.05 | 0.37 | 19.35 |
| Year Lowest Occurred | 1981 | 1990 | 1978 | 1989 | 1988 | 1976 | 1966 | 1969 | 1976 | 1964 | 1976 | 1989 | 1966 |
| Heating Degree Days (F) | 1597. | 1336. | 1094. | 609. | 283. | 65. | 10. | 34. | 193. | 521. | 933. | 1417. | 8092. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 35. | 98. | 196. | 114. | 7. | 0. | 0. | 0. | 450. |