| | Riverdale, CA | Corona, CA | United States |
| Rainfall | 8.9 | 12.2 | 38.1 |
| Snowfall | 0 | 0 | 27.8 |
| Precipitation Days | 38 | 31.7 | 106.2 |
| Sunny | 268 | 275 | 205 |
| Avg. July High | 96.3 | 93.1 | 85.8 |
| Avg. Jan. Low | 36.1 | 42.2 | 21.7 |
| Comfort Index (higher=better) | 8.1 | 8.7 | 7 |
| UV Index | 5.3 | 5.7 | 4.3 |
| Elevation ft. | 223 | 679 | 2443 |