| | Milton-Freewater, OR | Arco, ID | United States |
| Rainfall | 18.4 | 10.7 | 38.1 |
| Snowfall | 9.2 | 44.4 | 27.8 |
| Precipitation Days | 104.1 | 60.1 | 106.2 |
| Sunny | 189 | 200 | 205 |
| Avg. July High | 89.2 | 85 | 85.8 |
| Avg. Jan. Low | 29.1 | 5.6 | 21.7 |
| Comfort Index (higher=better) | 7.4 | 6.7 | 7 |
| UV Index | 3.2 | 4.1 | 4.3 |
| Elevation ft. | 1043 | 5325 | 2443 |