| | San Marcos, CA | Vail, AZ | United States |
| Rainfall | 13.7 | 14 | 38.1 |
| Snowfall | 0 | 0.7 | 27.8 |
| Precipitation Days | 41.3 | 55 | 106.2 |
| Sunny | 265 | 284 | 205 |
| Avg. July High | 80.6 | 97.9 | 85.8 |
| Avg. Jan. Low | 45 | 31.8 | 21.7 |
| Comfort Index (higher=better) | 9.1 | 7.7 | 7 |
| UV Index | 5.9 | 6.5 | 4.3 |
| Elevation ft. | 581 | 3235 | 2443 |