| | La Palma, CA | Walnut, CA | United States |
| Rainfall | 13.5 | 16.2 | 38.1 |
| Snowfall | 0 | 0 | 27.8 |
| Precipitation Days | 32.1 | 32.8 | 106.2 |
| Sunny | 275 | 285 | 205 |
| Avg. July High | 82.7 | 88.2 | 85.8 |
| Avg. Jan. Low | 45.8 | 44 | 21.7 |
| Comfort Index (higher=better) | 9.3 | 9.1 | 7 |
| UV Index | 5.9 | 6.2 | 4.3 |
| Elevation ft. | 46 | 561 | 2443 |