| | Washington, IA | Coralville, IA | United States |
| Rainfall | 37.3 | 36.9 | 38.1 |
| Snowfall | 28.7 | 26.8 | 27.8 |
| Precipitation Days | 105.1 | 97.4 | 106.2 |
| Sunny | 199 | 198 | 205 |
| Avg. July High | 85.7 | 85.1 | 85.8 |
| Avg. Jan. Low | 12.8 | 13.2 | 21.7 |
| Comfort Index (higher=better) | 7 | 7 | 7 |
| UV Index | 3.9 | 4 | 4.3 |
| Elevation ft. | 758 | 682 | 2443 |