| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 20.7 | 25.5 | 36.7 | 50.1 | 63.2 | 72.4 | 78.4 | 75.5 | 65.8 | 55.2 | 39.2 | 25.2 | 50.7 |
| Highest Mean Max. Temperature (F) | 31.1 | 35.8 | 45.0 | 60.0 | 70.5 | 78.0 | 83.6 | 81.3 | 69.8 | 67.8 | 46.5 | 32.8 | 54.1 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1987 | 1988 | 1969 | 1976 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 11.4 | 16.9 | 27.6 | 42.8 | 56.5 | 65.1 | 74.4 | 70.9 | 58.4 | 49.3 | 33.6 | 17.0 | 47.5 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1970 | 1969 | 1962 | 1964 | 1965 | 1987 | 1985 | 1989 | 1972 |
| Mean Temperature (F) | 11.2 | 14.7 | 26.5 | 39.6 | 51.1 | 60.1 | 66.9 | 64.8 | 55.9 | 45.7 | 31.5 | 17.4 | 40.5 |
| Highest Mean Temperature (F) | 21.2 | 26.4 | 33.1 | 46.0 | 57.2 | 64.7 | 70.8 | 70.0 | 58.7 | 56.2 | 37.6 | 25.0 | 44.4 |
| Year Highest Occurred | 1990 | 1987 | 1985 | 1987 | 1977 | 1987 | 1988 | 1983 | 1971 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Temperature (F) | 2.2 | 4.9 | 18.3 | 34.4 | 45.0 | 54.7 | 62.9 | 60.7 | 49.9 | 40.4 | 25.7 | 8.4 | 37.4 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1967 | 1969 | 1962 | 1977 | 1965 | 1976 | 1985 | 1976 | 1972 |
| Mean Min. Temperature (F) | 1.7 | 3.8 | 16.3 | 29.1 | 39.0 | 47.8 | 55.5 | 54.1 | 46.0 | 36.1 | 23.7 | 9.5 | 30.2 |
| Highest Mean Min. Temperature (F) | 12.5 | 17.0 | 24.6 | 32.9 | 44.0 | 51.6 | 59.4 | 59.0 | 48.7 | 44.6 | 28.6 | 19.1 | 34.7 |
| Year Highest Occurred | 1987 | 1987 | 1973 | 1986 | 1964 | 1990 | 1975 | 1983 | 1983 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -8.3 | -7.2 | 8.9 | 25.3 | 32.4 | 44.0 | 51.3 | 50.3 | 41.3 | 31.0 | 17.8 | -1.5 | 27.2 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1972 | 1967 | 1962 | 1962 | 1977 | 1965 | 1976 | 1985 | 1976 | 1972 |
| Mean Precipitation (in.) | 1.56 | 0.86 | 2.20 | 2.14 | 3.31 | 3.49 | 3.48 | 4.20 | 4.08 | 2.88 | 2.30 | 1.82 | 32.32 |
| Highest Precipitation (in.) | 3.39 | 3.03 | 8.00 | 4.47 | 7.06 | 6.70 | 8.47 | 11.25 | 9.03 | 5.64 | 7.66 | 3.66 | 46.05 |
| Year Highest Occurred | 1969 | 1981 | 1965 | 1964 | 1964 | 1984 | 1978 | 1972 | 1985 | 1970 | 1975 | 1968 | 1965 |
| Lowest Precipitation (in.) | 0.23 | 0.07 | 0.41 | 0.25 | 0.49 | 1.09 | 0.74 | 1.15 | 1.38 | 0.36 | 0.35 | 0.37 | 18.77 |
| Year Lowest Occurred | 1961 | 1969 | 1964 | 1988 | 1990 | 1961 | 1988 | 1970 | 1976 | 1963 | 1962 | 1962 | 1963 |
| Heating Degree Days (F) | 1668. | 1408. | 1194. | 762. | 431. | 165. | 44. | 83. | 276. | 598. | 1005. | 1476. | 9110. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 18. | 102. | 77. | 0. | 0. | 0. | 0. | 197. |