| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 22.0 | 26.5 | 36.2 | 48.7 | 58.4 | 67.9 | 75.5 | 73.9 | 65.4 | 55.0 | 39.8 | 26.4 | 49.6 |
| Highest Mean Max. Temperature (F) | 31.5 | 35.4 | 43.4 | 57.9 | 66.1 | 76.3 | 83.0 | 82.7 | 70.6 | 67.7 | 46.0 | 33.7 | 53.5 |
| Year Highest Occurred | 1964 | 1987 | 1981 | 1987 | 1964 | 1987 | 1966 | 1961 | 1963 | 1963 | 1963 | 1974 | 1961 |
| Lowest Mean Max. Temperature (F) | 14.2 | 16.2 | 29.3 | 41.6 | 51.6 | 61.3 | 70.6 | 68.4 | 59.7 | 49.8 | 33.7 | 17.1 | 45.7 |
| Year Lowest Occurred | 1963 | 1979 | 1989 | 1975 | 1983 | 1969 | 1978 | 1977 | 1965 | 1976 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 12.7 | 16.9 | 27.8 | 39.5 | 48.3 | 56.4 | 64.4 | 64.3 | 56.5 | 46.4 | 32.7 | 18.4 | 40.4 |
| Highest Mean Temperature (F) | 22.5 | 28.2 | 34.6 | 45.6 | 53.8 | 63.3 | 69.4 | 70.7 | 60.0 | 56.9 | 37.7 | 26.4 | 45.0 |
| Year Highest Occurred | 1990 | 1987 | 1981 | 1987 | 1964 | 1987 | 1988 | 1983 | 1981 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Temperature (F) | 2.8 | 7.5 | 16.5 | 31.0 | 43.8 | 51.6 | 59.2 | 59.4 | 50.9 | 39.9 | 27.1 | 9.2 | 36.8 |
| Year Lowest Occurred | 1982 | 1979 | 1975 | 1975 | 1983 | 1969 | 1972 | 1977 | 1965 | 1976 | 1985 | 1983 | 1972 |
| Mean Min. Temperature (F) | 3.4 | 7.3 | 19.3 | 30.2 | 38.2 | 44.8 | 53.3 | 54.6 | 47.5 | 37.8 | 25.6 | 10.4 | 31.0 |
| Highest Mean Min. Temperature (F) | 14.5 | 20.9 | 28.5 | 34.7 | 41.4 | 50.3 | 59.1 | 61.9 | 51.4 | 46.1 | 30.8 | 20.9 | 36.4 |
| Year Highest Occurred | 1983 | 1987 | 1973 | 1986 | 1964 | 1987 | 1987 | 1983 | 1987 | 1963 | 1983 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -8.8 | -4.6 | 1.0 | 20.4 | 33.8 | 41.9 | 46.4 | 49.6 | 41.6 | 30.0 | 18.1 | -0.8 | 27.7 |
| Year Lowest Occurred | 1982 | 1975 | 1975 | 1975 | 1967 | 1969 | 1972 | 1968 | 1974 | 1976 | 1976 | 1976 | 1972 |
| Mean Precipitation (in.) | 1.04 | 0.62 | 1.72 | 2.06 | 3.21 | 3.90 | 3.44 | 3.88 | 3.89 | 2.43 | 1.70 | 1.20 | 29.09 |
| Highest Precipitation (in.) | 4.33 | 2.76 | 5.18 | 4.73 | 7.37 | 8.93 | 8.93 | 9.29 | 7.12 | 6.29 | 3.62 | 2.70 | 37.74 |
| Year Highest Occurred | 1969 | 1981 | 1966 | 1968 | 1979 | 1981 | 1978 | 1988 | 1977 | 1971 | 1965 | 1969 | 1982 |
| Lowest Precipitation (in.) | 0.02 | 0.07 | 0.15 | 0.45 | 0.08 | 1.41 | 1.41 | 0.54 | 0.72 | 0.50 | 0.08 | 0.06 | 17.43 |
| Year Lowest Occurred | 1981 | 1969 | 1962 | 1976 | 1976 | 1987 | 1969 | 1961 | 1974 | 1964 | 1976 | 1979 | 1976 |
| Heating Degree Days (F) | 1621. | 1347. | 1153. | 765. | 518. | 264. | 103. | 105. | 260. | 577. | 969. | 1445. | 9127. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 6. | 84. | 83. | 5. | 0. | 0. | 0. | 178. |