| | Ephrata, WA | Waterville, WA | United States |
| Rainfall | 8.2 | 18 | 38.1 |
| Snowfall | 22.4 | 81.8 | 27.8 |
| Precipitation Days | 62.9 | 75.7 | 106.2 |
| Sunny | 192 | 199 | 205 |
| Avg. July High | 87.9 | 82.6 | 85.8 |
| Avg. Jan. Low | 23 | 19.8 | 21.7 |
| Comfort Index (higher=better) | 7.3 | 6.7 | 7 |
| UV Index | 3.2 | 2.7 | 4.3 |
| Elevation ft. | 1276 | 2625 | 2443 |