| Downey, CA | Diamond Bar, CA | United States |
Rainfall | 14.1 | 18.8 | 38.1 |
Snowfall | 0 | 0 | 27.8 |
Precipitation Days | 28.2 | 32.3 | 106.2 |
Sunny | 287 | 286 | 205 |
Avg. July High | 84.6 | 90.9 | 85.8 |
Avg. Jan. Low | 46 | 42.5 | 21.7 |
Comfort Index (higher=better) | 9.3 | 8.8 | 7 |
UV Index | 6.2 | 6.2 | 4.3 |
Elevation ft. | 118 | 696 | 2443 |