| | Sumner, WA | Dayton, WA | United States |
| Rainfall | 48.9 | 16.4 | 38.1 |
| Snowfall | 4.7 | 14.6 | 27.8 |
| Precipitation Days | 172.4 | 106.9 | 106.2 |
| Sunny | 141 | 176 | 205 |
| Avg. July High | 75.7 | 86.4 | 85.8 |
| Avg. Jan. Low | 34.7 | 26.3 | 21.7 |
| Comfort Index (higher=better) | 7.1 | 7.1 | 7 |
| UV Index | 2.6 | 3.1 | 4.3 |
| Elevation ft. | 75 | 1660 | 2443 |