| Ashburn, VA | Fort Washington, MD | United States |
Rainfall | 42 | 43 | 38 |
Snowfall | 22 | 14 | 28 |
Precipitation | 116 | 113 | 106 |
Sunny | 197 | 201 | 205 |
Avg. July High | 87 | 88 | 86 |
Avg. Jan. Low | 23 | 26 | 22 |
Comfort Index (higher=better) | 7.2 | 7.4 | 7 |
UV Index | 4 | 4.3 | 4.3 |
Elevation | 295 | 108 | 2443 |