| | El Cajon, CA | San Bruno, CA | United States |
| Rainfall | 14.1 | 25.5 | 38.1 |
| Snowfall | 0 | 0 | 27.8 |
| Precipitation Days | 39.5 | 69.1 | 106.2 |
| Sunny | 260 | 262 | 205 |
| Avg. July High | 86.1 | 69.8 | 85.8 |
| Avg. Jan. Low | 43.7 | 45.9 | 21.7 |
| Comfort Index (higher=better) | 9.1 | 8.5 | 7 |
| UV Index | 5.9 | 4.9 | 4.3 |
| Elevation ft. | 433 | 20 | 2443 |