| | Ontario, CA | Baltimore, MD | United States |
| Rainfall | 15.7 | 42.3 | 38.1 |
| Snowfall | 0 | 18.5 | 27.8 |
| Precipitation Days | 30.5 | 113.6 | 106.2 |
| Sunny | 279 | 213 | 205 |
| Avg. July High | 91.9 | 88.1 | 85.8 |
| Avg. Jan. Low | 42.6 | 27.4 | 21.7 |
| Comfort Index (higher=better) | 8.8 | 7.3 | 7 |
| UV Index | 5.7 | 4.1 | 4.3 |
| Elevation ft. | 1004 | 33 | 2443 |