| | Colonial Beach, VA | Chesapeake Beach, MD | United States |
| Rainfall | 44.5 | 44.2 | 38.1 |
| Snowfall | 15.7 | 15.8 | 27.8 |
| Precipitation Days | 115.6 | 106.7 | 106.2 |
| Sunny | 208 | 203 | 205 |
| Avg. July High | 89.4 | 86.9 | 85.8 |
| Avg. Jan. Low | 26.7 | 24.7 | 21.7 |
| Comfort Index (higher=better) | 7.3 | 7.4 | 7 |
| UV Index | 4.1 | 3.9 | 4.3 |
| Elevation ft. | 7 | 56 | 2443 |