| Custer, SD | Fort Madison, IA | United States |
Rainfall | 20 | 39 | 38 |
Snowfall | 55 | 21 | 28 |
Precipitation | 93 | 108 | 106 |
Sunny | 226 | 204 | 205 |
Avg. July High | 80 | 86 | 86 |
Avg. Jan. Low | 16 | 17 | 22 |
Comfort Index (higher=better) | 6.7 | 7 | 7 |
UV Index | 4.7 | 3.8 | 4.3 |
Elevation | 5315 | 525 | 2443 |