| Cary, NC | Potomac, MD | United States |
Rainfall | 46.3 | 42 | 38.1 |
Snowfall | 4.1 | 16.8 | 27.8 |
Precipitation Days | 107.1 | 114 | 106.2 |
Sunny | 213 | 201 | 205 |
Avg. July High | 89.1 | 85.7 | 85.8 |
Avg. Jan. Low | 29.9 | 25.3 | 21.7 |
Comfort Index (higher=better) | 7.5 | 7.3 | 7 |
UV Index | 4.9 | 4.1 | 4.3 |
Elevation ft. | 495 | 361 | 2443 |