| | Prosser, WA | Hermiston, OR | United States |
| Rainfall | 8.5 | 10.1 | 38.1 |
| Snowfall | 5.8 | 1.9 | 27.8 |
| Precipitation Days | 67.5 | 78.2 | 106.2 |
| Sunny | 190 | 189 | 205 |
| Avg. July High | 89.3 | 89.3 | 85.8 |
| Avg. Jan. Low | 27.2 | 27.5 | 21.7 |
| Comfort Index (higher=better) | 7.6 | 7.5 | 7 |
| UV Index | 3.2 | 3.2 | 4.3 |
| Elevation ft. | 666 | 459 | 2443 |