| West Covina, CA | Diamond Bar, CA | United States |
Rainfall | 17 | 19 | 38 |
Snowfall | 0 | 0 | 28 |
Precipitation | 34 | 32 | 106 |
Sunny | 278 | 286 | 205 |
Avg. July High | 87 | 91 | 86 |
Avg. Jan. Low | 45 | 43 | 22 |
Comfort Index (higher=better) | 9.1 | 8.8 | 7 |
UV Index | 6.2 | 6.2 | 4.3 |
Elevation | 384 | 696 | 2443 |