| | Montclair, CA | Eastvale, CA | United States |
| Rainfall | 16.8 | 13.1 | 38.1 |
| Snowfall | 0 | 0 | 27.8 |
| Precipitation Days | 31.9 | 32.7 | 106.2 |
| Sunny | 278 | 272 | 205 |
| Avg. July High | 91.4 | 91.7 | 85.8 |
| Avg. Jan. Low | 42.3 | 42.4 | 21.7 |
| Comfort Index (higher=better) | 8.8 | 8.8 | 7 |
| UV Index | 5.7 | 5.7 | 4.3 |
| Elevation ft. | 1066 | 627 | 2443 |