| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 57.4 | 61.7 | 70.3 | 78.0 | 84.3 | 89.3 | 91.5 | 90.2 | 86.1 | 77.9 | 69.7 | 61.1 | 76.5 |
| Highest Mean Max. Temperature (F) | 70.3 | 71.0 | 76.0 | 82.7 | 91.1 | 93.9 | 98.7 | 94.9 | 90.5 | 83.2 | 74.5 | 69.6 | 80.6 |
| Year Highest Occurred | 1974 | 1990 | 1974 | 1967 | 1962 | 1986 | 1986 | 1987 | 1980 | 1984 | 1973 | 1984 | 1990 |
| Lowest Mean Max. Temperature (F) | 47.3 | 53.6 | 64.3 | 72.0 | 79.5 | 85.5 | 87.1 | 85.3 | 79.9 | 73.1 | 62.1 | 52.8 | 74.6 |
| Year Lowest Occurred | 1977 | 1978 | 1969 | 1961 | 1972 | 1966 | 1964 | 1981 | 1979 | 1976 | 1976 | 1963 | 1966 |
| Mean Temperature (F) | 45.9 | 49.2 | 57.2 | 64.3 | 71.5 | 77.4 | 80.2 | 79.3 | 74.6 | 64.9 | 56.7 | 49.2 | 64.2 |
| Highest Mean Temperature (F) | 58.7 | 58.4 | 61.2 | 68.4 | 76.8 | 81.4 | 85.4 | 81.9 | 78.0 | 71.1 | 63.6 | 58.1 | 67.7 |
| Year Highest Occurred | 1974 | 1990 | 1961 | 1967 | 1962 | 1981 | 1986 | 1987 | 1980 | 1984 | 1985 | 1971 | 1990 |
| Lowest Mean Temperature (F) | 37.5 | 42.1 | 51.2 | 59.9 | 67.4 | 73.7 | 75.9 | 76.5 | 69.5 | 58.3 | 49.1 | 41.6 | 62.6 |
| Year Lowest Occurred | 1977 | 1978 | 1969 | 1961 | 1976 | 1966 | 1975 | 1981 | 1967 | 1987 | 1976 | 1963 | 1976 |
| Mean Min. Temperature (F) | 34.3 | 36.7 | 44.1 | 50.5 | 58.6 | 65.5 | 68.8 | 68.3 | 63.1 | 51.9 | 43.7 | 37.2 | 51.9 |
| Highest Mean Min. Temperature (F) | 47.0 | 45.8 | 50.1 | 54.1 | 62.5 | 69.6 | 72.1 | 71.1 | 65.8 | 59.8 | 53.0 | 48.1 | 54.6 |
| Year Highest Occurred | 1974 | 1990 | 1977 | 1970 | 1962 | 1981 | 1986 | 1970 | 1986 | 1971 | 1985 | 1971 | 1990 |
| Lowest Mean Min. Temperature (F) | 27.6 | 29.7 | 38.1 | 45.9 | 54.5 | 60.2 | 64.6 | 65.6 | 57.0 | 41.2 | 36.0 | 30.4 | 49.6 |
| Year Lowest Occurred | 1977 | 1968 | 1969 | 1987 | 1976 | 1972 | 1975 | 1976 | 1967 | 1987 | 1976 | 1963 | 1976 |
| Mean Precipitation (in.) | 4.21 | 4.13 | 4.49 | 3.24 | 3.99 | 5.46 | 4.84 | 4.84 | 3.17 | 2.73 | 2.41 | 3.51 | 47.02 |
| Highest Precipitation (in.) | 8.35 | 8.33 | 9.74 | 12.99 | 10.34 | 11.53 | 9.55 | 9.97 | 8.16 | 14.67 | 8.04 | 8.08 | 75.10 |
| Year Highest Occurred | 1964 | 1973 | 1980 | 1961 | 1984 | 1976 | 1965 | 1964 | 1979 | 1990 | 1985 | 1981 | 1964 |
| Lowest Precipitation (in.) | 0.70 | 1.30 | 0.98 | 0.36 | 0.69 | 0.67 | 1.21 | 0.95 | 0.12 | 0.00 | 0.74 | 0.82 | 33.21 |
| Year Lowest Occurred | 1981 | 1978 | 1985 | 1972 | 1983 | 1984 | 1988 | 1963 | 1981 | 1963 | 1981 | 1988 | 1986 |
| Heating Degree Days (F) | 601. | 448. | 257. | 79. | 7. | 0. | 0. | 0. | 0. | 101. | 264. | 497. | 2254. |
| Cooling Degree Days (F) | 8. | 6. | 15. | 58. | 208. | 372. | 471. | 443. | 288. | 98. | 15. | 7. | 1989. |