| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 21.5 | 25.9 | 37.2 | 51.6 | 65.6 | 73.7 | 78.9 | 75.9 | 66.4 | 55.4 | 38.4 | 25.3 | 51.3 |
| Highest Mean Max. Temperature (F) | 32.1 | 36.1 | 44.7 | 60.9 | 75.9 | 80.0 | 84.5 | 82.8 | 71.7 | 69.3 | 45.5 | 31.6 | 55.8 |
| Year Highest Occurred | 1990 | 1987 | 1987 | 1987 | 1977 | 1988 | 1988 | 1976 | 1989 | 1963 | 1981 | 1974 | 1987 |
| Lowest Mean Max. Temperature (F) | 12.7 | 18.5 | 28.4 | 44.2 | 57.9 | 64.0 | 72.7 | 70.6 | 59.7 | 48.8 | 32.1 | 17.2 | 48.7 |
| Year Lowest Occurred | 1977 | 1963 | 1965 | 1975 | 1967 | 1969 | 1965 | 1977 | 1965 | 1979 | 1976 | 1983 | 1972 |
| Mean Temperature (F) | 12.4 | 14.9 | 25.6 | 39.4 | 52.2 | 60.8 | 66.5 | 64.4 | 55.9 | 45.7 | 31.2 | 17.6 | 40.6 |
| Highest Mean Temperature (F) | 23.2 | 26.9 | 33.9 | 45.3 | 61.8 | 65.7 | 71.3 | 69.6 | 60.0 | 56.0 | 36.8 | 25.4 | 44.8 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1977 | 1976 | 1983 | 1983 | 1978 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Temperature (F) | 2.7 | 7.0 | 17.1 | 31.8 | 44.8 | 53.9 | 61.5 | 59.8 | 50.1 | 40.1 | 24.0 | 8.5 | 37.9 |
| Year Lowest Occurred | 1977 | 1963 | 1965 | 1975 | 1967 | 1969 | 1971 | 1977 | 1974 | 1988 | 1976 | 1989 | 1972 |
| Mean Min. Temperature (F) | 3.2 | 3.8 | 13.8 | 27.2 | 38.7 | 47.8 | 54.1 | 52.7 | 45.3 | 35.9 | 24.0 | 9.8 | 29.7 |
| Highest Mean Min. Temperature (F) | 14.2 | 19.1 | 25.1 | 33.1 | 47.7 | 52.3 | 59.2 | 58.3 | 49.6 | 42.7 | 29.3 | 19.8 | 33.8 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1985 | 1977 | 1984 | 1983 | 1983 | 1978 | 1963 | 1963 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -7.4 | -4.5 | 5.3 | 19.4 | 31.6 | 42.0 | 49.4 | 48.8 | 39.1 | 29.7 | 15.9 | -0.5 | 27.1 |
| Year Lowest Occurred | 1977 | 1963 | 1969 | 1975 | 1967 | 1986 | 1971 | 1967 | 1974 | 1976 | 1976 | 1989 | 1972 |
| Mean Precipitation (in.) | 1.63 | 1.41 | 2.16 | 2.23 | 3.43 | 3.58 | 3.49 | 3.87 | 3.97 | 3.24 | 2.82 | 2.03 | 33.86 |
| Highest Precipitation (in.) | 2.77 | 3.17 | 4.91 | 4.77 | 7.21 | 8.14 | 10.08 | 8.44 | 8.06 | 6.21 | 6.03 | 3.96 | 47.43 |
| Year Highest Occurred | 1967 | 1971 | 1979 | 1985 | 1983 | 1967 | 1968 | 1978 | 1968 | 1979 | 1985 | 1968 | 1968 |
| Lowest Precipitation (in.) | 0.64 | 0.47 | 0.53 | 0.59 | 0.30 | 0.93 | 0.85 | 0.47 | 0.65 | 1.34 | 0.75 | 0.82 | 21.03 |
| Year Lowest Occurred | 1968 | 1988 | 1980 | 1988 | 1986 | 1988 | 1963 | 1976 | 1989 | 1978 | 1984 | 1986 | 1976 |
| Heating Degree Days (F) | 1631. | 1403. | 1221. | 768. | 418. | 156. | 61. | 94. | 278. | 598. | 1014. | 1469. | 9111. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 21. | 30. | 107. | 76. | 5. | 0. | 0. | 0. | 239. |