| | Colusa, CA | Umatilla, OR | United States |
| Rainfall | 24.1 | 9 | 38.1 |
| Snowfall | 0.1 | 1.9 | 27.8 |
| Precipitation Days | 58.7 | 81.3 | 106.2 |
| Sunny | 264 | 195 | 205 |
| Avg. July High | 94.7 | 88.3 | 85.8 |
| Avg. Jan. Low | 38.4 | 28.7 | 21.7 |
| Comfort Index (higher=better) | 8.1 | 7.6 | 7 |
| UV Index | 5.1 | 3.2 | 4.3 |
| Elevation ft. | 49 | 322 | 2443 |