| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 51.7 | 56.5 | 64.5 | 73.0 | 80.0 | 86.4 | 90.1 | 88.2 | 82.9 | 73.7 | 64.2 | 54.8 | 72.2 |
| Highest Mean Max. Temperature (F) | 62.5 | 66.2 | 71.8 | 77.9 | 85.5 | 91.0 | 97.5 | 93.8 | 87.0 | 80.0 | 70.1 | 63.5 | 97.5 |
| Year Highest Occurred | 1974 | 1976 | 1997 | 1994 | 2000 | 2000 | 1993 | 1999 | 1993 | 1984 | 1990 | 1984 | 1993 |
| Lowest Mean Max. Temperature (F) | 40.4 | 48.4 | 57.8 | 67.1 | 75.2 | 81.1 | 85.1 | 84.3 | 79.6 | 69.0 | 58.4 | 45.6 | 40.4 |
| Year Lowest Occurred | 1977 | 1978 | 1980 | 1983 | 1972 | 1979 | 1975 | 1985 | 1974 | 1988 | 1976 | 2000 | 1977 |
| Mean Temperature (F) | 40.5 | 43.8 | 51.3 | 59.2 | 67.6 | 75.2 | 79.2 | 77.7 | 71.8 | 60.6 | 51.3 | 43.1 | 60.1 |
| Highest Mean Temperature (F) | 53.0 | 52.1 | 56.4 | 63.9 | 71.2 | 79.0 | 83.1 | 81.0 | 75.9 | 68.6 | 59.4 | 52.9 | 83.1 |
| Year Highest Occurred | 1974 | 1976 | 1976 | 1977 | 1975 | 1981 | 1993 | 1980 | 1980 | 1984 | 1985 | 1971 | 1993 |
| Lowest Mean Temperature (F) | 30.7 | 37.0 | 46.3 | 54.8 | 62.6 | 71.5 | 76.7 | 74.8 | 68.5 | 53.6 | 45.3 | 34.2 | 30.7 |
| Year Lowest Occurred | 1977 | 1978 | 1993 | 1997 | 1997 | 1997 | 1984 | 1992 | 1994 | 1987 | 1997 | 2000 | 1977 |
| Mean Min. Temperature (F) | 29.3 | 31.0 | 38.0 | 45.4 | 55.2 | 64.0 | 68.2 | 67.1 | 60.6 | 47.4 | 38.3 | 31.4 | 48.0 |
| Highest Mean Min. Temperature (F) | 43.5 | 38.0 | 44.3 | 51.3 | 61.2 | 69.1 | 70.4 | 69.1 | 65.9 | 57.2 | 50.1 | 43.0 | 70.4 |
| Year Highest Occurred | 1974 | 1976 | 1976 | 1981 | 1975 | 1981 | 1980 | 1983 | 1980 | 1984 | 1985 | 1971 | 1980 |
| Lowest Mean Min. Temperature (F) | 21.0 | 25.5 | 31.0 | 39.0 | 46.7 | 59.2 | 66.0 | 62.6 | 54.9 | 36.7 | 31.6 | 22.7 | 21.0 |
| Year Lowest Occurred | 1977 | 1978 | 1999 | 1993 | 1997 | 1988 | 2000 | 1997 | 1999 | 1987 | 1995 | 1989 | 1977 |
| Mean Precipitation (in.) | 4.76 | 3.77 | 4.77 | 3.36 | 3.30 | 4.50 | 3.99 | 4.60 | 4.19 | 3.55 | 3.59 | 3.49 | 47.87 |
| Highest Precipitation (in.) | 8.12 | 7.04 | 11.39 | 8.04 | 6.72 | 12.25 | 11.65 | 14.98 | 11.56 | 12.52 | 8.51 | 9.51 | 14.98 |
| Year Highest Occurred | 1975 | 1979 | 1980 | 1998 | 1971 | 1973 | 1989 | 1986 | 2000 | 1990 | 1985 | 1983 | 1986 |
| Lowest Precipitation (in.) | 0.48 | 0.38 | 0.35 | 0.54 | 1.23 | 1.11 | 0.43 | 0.53 | 0.05 | 0.00 | 0.40 | 0.63 | 0.00 |
| Year Lowest Occurred | 1981 | 1978 | 1985 | 1981 | 1988 | 1990 | 1995 | 1999 | 1985 | 2000 | 1981 | 1988 | 2000 |
| Heating Degree Days (F) | 760. | 596. | 430. | 192. | 49. | 2. | 0. | 0. | 10. | 190. | 418. | 679. | 3326. |
| Cooling Degree Days (F) | 0. | 0. | 3. | 17. | 130. | 306. | 440. | 392. | 213. | 52. | 5. | 0. | 1558. |