| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 24.8 | 28.1 | 39.3 | 53.3 | 66.4 | 76.8 | 82.8 | 78.9 | 70.0 | 57.7 | 42.9 | 29.4 | 54.2 |
| Highest Mean Max. Temperature (F) | 35.1 | 36.9 | 46.8 | 60.7 | 75.9 | 87.0 | 87.9 | 84.8 | 74.3 | 70.2 | 48.8 | 35.9 | 58.2 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1988 | 1988 | 1988 | 1983 | 1961 | 1963 | 1975 | 1965 | 1987 |
| Lowest Mean Max. Temperature (F) | 16.4 | 20.2 | 33.9 | 46.2 | 54.7 | 67.8 | 78.0 | 73.8 | 63.8 | 50.2 | 38.4 | 19.2 | 50.0 |
| Year Lowest Occurred | 1982 | 1979 | 1984 | 1983 | 1983 | 1982 | 1978 | 1979 | 1982 | 1988 | 1976 | 1989 | 1982 |
| Mean Temperature (F) | 15.5 | 18.1 | 29.5 | 42.8 | 54.9 | 65.0 | 70.9 | 67.8 | 59.6 | 48.1 | 34.6 | 21.4 | 44.0 |
| Highest Mean Temperature (F) | 23.6 | 27.0 | 37.3 | 48.6 | 62.8 | 70.8 | 74.1 | 72.8 | 63.7 | 57.6 | 40.3 | 29.6 | 47.4 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1977 | 1988 | 1970 | 1983 | 1961 | 1963 | 1990 | 1965 | 1987 |
| Lowest Mean Temperature (F) | 6.5 | 9.6 | 23.3 | 36.8 | 46.4 | 57.3 | 68.0 | 64.2 | 52.5 | 40.5 | 28.4 | 9.5 | 41.3 |
| Year Lowest Occurred | 1982 | 1963 | 1984 | 1975 | 1983 | 1982 | 1978 | 1977 | 1974 | 1988 | 1976 | 1989 | 1982 |
| Mean Min. Temperature (F) | 6.1 | 8.0 | 19.7 | 32.2 | 43.4 | 53.2 | 59.0 | 56.6 | 49.2 | 38.4 | 26.3 | 13.2 | 33.8 |
| Highest Mean Min. Temperature (F) | 14.5 | 18.3 | 28.9 | 37.5 | 49.9 | 57.3 | 62.3 | 61.6 | 54.2 | 48.3 | 31.9 | 23.3 | 37.0 |
| Year Highest Occurred | 1987 | 1984 | 1973 | 1970 | 1977 | 1987 | 1983 | 1973 | 1968 | 1971 | 1990 | 1965 | 1973 |
| Lowest Mean Min. Temperature (F) | -3.6 | -2.5 | 12.7 | 26.4 | 38.0 | 46.7 | 54.7 | 52.5 | 40.2 | 30.7 | 17.8 | -0.3 | 30.4 |
| Year Lowest Occurred | 1977 | 1963 | 1984 | 1975 | 1983 | 1982 | 1965 | 1986 | 1974 | 1988 | 1989 | 1989 | 1989 |
| Mean Precipitation (in.) | 1.62 | 1.34 | 2.28 | 2.82 | 3.49 | 3.64 | 3.27 | 3.24 | 3.62 | 2.36 | 2.58 | 1.90 | 32.16 |
| Highest Precipitation (in.) | 5.63 | 3.30 | 7.03 | 6.67 | 8.81 | 10.49 | 5.89 | 5.82 | 8.38 | 6.04 | 8.20 | 4.73 | 41.80 |
| Year Highest Occurred | 1982 | 1984 | 1977 | 1968 | 1965 | 1990 | 1971 | 1975 | 1965 | 1967 | 1985 | 1968 | 1985 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.35 | 0.57 | 0.77 | 0.74 | 0.87 | 0.53 | 0.31 | 0.38 | 0.10 | 0.00 | 19.64 |
| Year Lowest Occurred | 1990 | 1990 | 1978 | 1971 | 1988 | 1988 | 1981 | 1970 | 1967 | 1975 | 1976 | 1989 | 1989 |
| Heating Degree Days (F) | 1535. | 1313. | 1101. | 666. | 336. | 92. | 8. | 38. | 182. | 524. | 912. | 1352. | 8059. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 23. | 92. | 191. | 125. | 20. | 0. | 0. | 0. | 451. |