| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 51.4 | 56.5 | 64.7 | 73.0 | 80.5 | 87.2 | 90.2 | 88.2 | 82.5 | 72.9 | 63.2 | 54.2 | 72.0 |
| Highest Mean Max. Temperature (F) | 59.1 | 64.8 | 71.6 | 79.1 | 86.8 | 92.4 | 98.1 | 94.8 | 87.0 | 79.5 | 69.0 | 64.1 | 98.1 |
| Year Highest Occurred | 1974 | 1976 | 1997 | 1981 | 1982 | 1981 | 1993 | 1983 | 1993 | 1984 | 1985 | 1984 | 1993 |
| Lowest Mean Max. Temperature (F) | 38.3 | 47.3 | 57.7 | 67.8 | 76.0 | 80.7 | 85.2 | 85.1 | 77.8 | 67.2 | 56.2 | 46.1 | 38.3 |
| Year Lowest Occurred | 1977 | 1978 | 1971 | 1973 | 1976 | 1997 | 1971 | 1974 | 1979 | 1976 | 1976 | 2000 | 1977 |
| Mean Temperature (F) | 42.2 | 46.0 | 53.5 | 60.9 | 69.1 | 76.3 | 79.8 | 78.4 | 72.6 | 61.8 | 52.7 | 44.8 | 61.5 |
| Highest Mean Temperature (F) | 51.5 | 52.3 | 59.5 | 66.1 | 73.6 | 81.0 | 85.3 | 82.3 | 75.4 | 68.4 | 61.1 | 52.6 | 85.3 |
| Year Highest Occurred | 1974 | 1990 | 1997 | 1981 | 1982 | 1981 | 1993 | 1983 | 1998 | 1984 | 1985 | 1984 | 1993 |
| Lowest Mean Temperature (F) | 30.0 | 37.8 | 47.2 | 57.2 | 64.8 | 71.8 | 75.8 | 75.8 | 69.3 | 56.7 | 45.8 | 36.9 | 30.0 |
| Year Lowest Occurred | 1977 | 1978 | 1971 | 1983 | 1973 | 1974 | 1984 | 1976 | 1976 | 1976 | 1976 | 2000 | 1977 |
| Mean Min. Temperature (F) | 32.9 | 35.4 | 42.3 | 48.7 | 57.6 | 65.3 | 69.3 | 68.5 | 62.7 | 50.7 | 42.2 | 35.3 | 50.9 |
| Highest Mean Min. Temperature (F) | 43.9 | 42.0 | 47.5 | 54.2 | 62.8 | 69.7 | 72.4 | 71.8 | 65.5 | 57.5 | 53.1 | 42.7 | 72.4 |
| Year Highest Occurred | 1974 | 1990 | 1973 | 1991 | 1991 | 1981 | 1993 | 1995 | 1980 | 1985 | 1985 | 1971 | 1993 |
| Lowest Mean Min. Temperature (F) | 21.7 | 28.3 | 36.7 | 44.7 | 53.0 | 60.2 | 65.9 | 65.4 | 59.0 | 42.7 | 35.4 | 27.7 | 21.7 |
| Year Lowest Occurred | 1977 | 1978 | 1971 | 1997 | 1973 | 1972 | 1984 | 1976 | 1976 | 1987 | 1976 | 2000 | 1977 |
| Mean Precipitation (in.) | 4.69 | 4.39 | 4.99 | 3.35 | 3.86 | 3.94 | 4.41 | 3.78 | 3.53 | 3.47 | 3.71 | 3.71 | 47.83 |
| Highest Precipitation (in.) | 6.92 | 7.72 | 10.12 | 10.92 | 9.73 | 13.25 | 10.20 | 7.37 | 10.30 | 7.75 | 8.25 | 8.42 | 13.25 |
| Year Highest Occurred | 1978 | 1998 | 1975 | 1998 | 1974 | 1994 | 1984 | 1994 | 1989 | 1997 | 1992 | 1972 | 1994 |
| Lowest Precipitation (in.) | 0.64 | 0.75 | 1.15 | 0.74 | 0.41 | 0.91 | 1.54 | 0.98 | 0.62 | 0.12 | 1.38 | 0.81 | 0.12 |
| Year Lowest Occurred | 1981 | 1978 | 1985 | 1976 | 1988 | 1988 | 1993 | 1987 | 1985 | 1991 | 1990 | 1988 | 1991 |
| Heating Degree Days (F) | 691. | 522. | 350. | 153. | 28. | 1. | 0. | 0. | 10. | 136. | 360. | 610. | 2861. |
| Cooling Degree Days (F) | 0. | 1. | 8. | 46. | 164. | 351. | 471. | 430. | 254. | 53. | 7. | 0. | 1785. |