| | Chestertown, MD | Tappahannock, VA | United States |
| Rainfall | 45.1 | 43.5 | 38.1 |
| Snowfall | 13.9 | 11.6 | 27.8 |
| Precipitation Days | 112.8 | 116.3 | 106.2 |
| Sunny | 206 | 205 | 205 |
| Avg. July High | 87 | 90.5 | 85.8 |
| Avg. Jan. Low | 25.4 | 27.3 | 21.7 |
| Comfort Index (higher=better) | 7.3 | 7.3 | 7 |
| UV Index | 3.8 | 4.3 | 4.3 |
| Elevation ft. | 13 | 23 | 2443 |