| | Manassas, VA | Duck, NC | United States |
| Rainfall | 42.9 | 48.5 | 38.1 |
| Snowfall | 21.5 | 1 | 27.8 |
| Precipitation Days | 119.5 | 110.9 | 106.2 |
| Sunny | 196 | 210 | 205 |
| Avg. July High | 87.6 | 88 | 85.8 |
| Avg. Jan. Low | 23.7 | 33.5 | 21.7 |
| Comfort Index (higher=better) | 7.3 | 7.6 | 7 |
| UV Index | 4.1 | 4.4 | 4.3 |
| Elevation ft. | 308 | 13 | 2443 |