| | Lawrenceville, VA | Bowie, MD | United States |
| Rainfall | 45.1 | 43.8 | 38.1 |
| Snowfall | 4 | 14.9 | 27.8 |
| Precipitation Days | 104.8 | 106.9 | 106.2 |
| Sunny | 206 | 201 | 205 |
| Avg. July High | 89 | 87.9 | 85.8 |
| Avg. Jan. Low | 28.1 | 24 | 21.7 |
| Comfort Index (higher=better) | 7.5 | 7.4 | 7 |
| UV Index | 4.6 | 4.3 | 4.3 |
| Elevation ft. | 249 | 138 | 2443 |