| | Johnston, IA | Waukee, IA | United States |
| Rainfall | 35.9 | 35.9 | 38.1 |
| Snowfall | 34.1 | 34.3 | 27.8 |
| Precipitation Days | 109 | 109.3 | 106.2 |
| Sunny | 199 | 199 | 205 |
| Avg. July High | 85.7 | 85.7 | 85.8 |
| Avg. Jan. Low | 12.5 | 12.6 | 21.7 |
| Comfort Index (higher=better) | 6.9 | 6.9 | 7 |
| UV Index | 4 | 3.9 | 4.3 |
| Elevation ft. | 830 | 1033 | 2443 |