| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 35.0 | 43.4 | 55.0 | 64.3 | 73.0 | 80.8 | 88.0 | 87.3 | 77.6 | 63.8 | 46.8 | 35.8 | 62.6 |
| Highest Mean Max. Temperature (F) | 43.5 | 51.3 | 59.9 | 71.7 | 78.1 | 86.9 | 95.5 | 94.0 | 85.0 | 69.8 | 54.1 | 42.1 | 65.0 |
| Year Highest Occurred | 1967 | 1967 | 1981 | 1977 | 1969 | 1970 | 1985 | 1971 | 1990 | 1988 | 1990 | 1966 | 1967 |
| Lowest Mean Max. Temperature (F) | 24.1 | 34.4 | 49.2 | 58.1 | 66.1 | 75.8 | 82.4 | 80.7 | 71.2 | 60.3 | 35.4 | 27.3 | 60.6 |
| Year Lowest Occurred | 1969 | 1989 | 1989 | 1967 | 1977 | 1966 | 1963 | 1964 | 1986 | 1968 | 1985 | 1983 | 1985 |
| Mean Temperature (F) | 28.7 | 35.3 | 44.1 | 52.2 | 60.3 | 67.9 | 73.9 | 73.2 | 63.8 | 51.8 | 39.4 | 30.3 | 51.7 |
| Highest Mean Temperature (F) | 37.1 | 40.5 | 47.9 | 57.9 | 64.1 | 73.0 | 79.6 | 78.3 | 69.9 | 57.3 | 45.2 | 36.7 | 54.1 |
| Year Highest Occurred | 1981 | 1967 | 1981 | 1990 | 1983 | 1969 | 1985 | 1986 | 1990 | 1988 | 1990 | 1966 | 1990 |
| Lowest Mean Temperature (F) | 16.8 | 26.9 | 39.4 | 47.5 | 55.5 | 63.8 | 70.1 | 68.1 | 58.9 | 49.1 | 28.0 | 21.4 | 49.7 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1967 | 1977 | 1976 | 1983 | 1964 | 1972 | 1984 | 1985 | 1984 | 1985 |
| Mean Min. Temperature (F) | 22.3 | 27.1 | 33.1 | 40.0 | 47.6 | 55.0 | 59.8 | 59.0 | 50.0 | 39.8 | 31.9 | 24.6 | 40.9 |
| Highest Mean Min. Temperature (F) | 32.3 | 31.7 | 37.4 | 46.4 | 50.6 | 59.4 | 64.7 | 63.5 | 54.8 | 44.7 | 36.9 | 31.2 | 43.6 |
| Year Highest Occurred | 1981 | 1983 | 1983 | 1990 | 1990 | 1969 | 1990 | 1986 | 1990 | 1988 | 1965 | 1966 | 1990 |
| Lowest Mean Min. Temperature (F) | 9.0 | 19.3 | 29.4 | 36.1 | 44.9 | 50.4 | 55.9 | 55.5 | 45.1 | 36.0 | 20.5 | 15.3 | 38.8 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1972 | 1984 | 1976 | 1984 | 1964 | 1972 | 1972 | 1985 | 1984 | 1985 |
| Mean Precipitation (in.) | 1.32 | 0.86 | 0.62 | 0.57 | 0.48 | 0.55 | 0.24 | 0.49 | 0.41 | 0.47 | 1.28 | 1.54 | 8.83 |
| Highest Precipitation (in.) | 3.15 | 1.83 | 2.07 | 3.24 | 1.95 | 2.44 | 1.40 | 3.09 | 2.14 | 1.73 | 4.45 | 3.27 | 14.57 |
| Year Highest Occurred | 1970 | 1980 | 1983 | 1967 | 1981 | 1972 | 1987 | 1975 | 1986 | 1962 | 1983 | 1971 | 1983 |
| Lowest Precipitation (in.) | 0.08 | 0.02 | 0.03 | 0.00 | 0.01 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | 0.08 | 4.82 |
| Year Lowest Occurred | 1963 | 1988 | 1981 | 1973 | 1969 | 1986 | 1988 | 1987 | 1990 | 1987 | 1976 | 1976 | 1976 |
| Heating Degree Days (F) | 1125. | 832. | 648. | 384. | 164. | 46. | 0. | 12. | 115. | 409. | 768. | 1076. | 5579. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 18. | 133. | 281. | 266. | 79. | 0. | 0. | 0. | 777. |