| | Dayton, WA | Asotin, WA | United States |
| Rainfall | 16.4 | 15.7 | 38.1 |
| Snowfall | 14.6 | 19.7 | 27.8 |
| Precipitation Days | 106.9 | 106.7 | 106.2 |
| Sunny | 176 | 166 | 205 |
| Avg. July High | 86.4 | 86.4 | 85.8 |
| Avg. Jan. Low | 26.3 | 27.3 | 21.7 |
| Comfort Index (higher=better) | 7.1 | 7.2 | 7 |
| UV Index | 3.1 | 3.1 | 4.3 |
| Elevation ft. | 1660 | 801 | 2443 |