| Centreville, VA | Swarthmore, PA | United States |
Rainfall | 42.9 | 43.8 | 38.1 |
Snowfall | 21.5 | 20 | 27.8 |
Precipitation Days | 119.6 | 120.3 | 106.2 |
Sunny | 199 | 208 | 205 |
Avg. July High | 87.5 | 87.4 | 85.8 |
Avg. Jan. Low | 23.6 | 26.2 | 21.7 |
Comfort Index (higher=better) | 7.2 | 7.3 | 7 |
UV Index | 4 | 3.8 | 4.3 |
Elevation ft. | 358 | 131 | 2443 |