| Chantilly, VA | San Ramon, CA | United States |
Rainfall | 42.9 | 19 | 38.1 |
Snowfall | 21.5 | 0 | 27.8 |
Precipitation Days | 119.5 | 64.2 | 106.2 |
Sunny | 197 | 256 | 205 |
Avg. July High | 85.8 | 84.4 | 85.8 |
Avg. Jan. Low | 23.5 | 39.2 | 21.7 |
Comfort Index (higher=better) | 7.3 | 8.5 | 7 |
UV Index | 4 | 5.4 | 4.3 |
Elevation ft. | 325 | 486 | 2443 |