| | Promise City, IA | Corydon, IA | United States |
| Rainfall | 38 | 39.1 | 38.1 |
| Snowfall | 23.8 | 24.2 | 27.8 |
| Precipitation Days | 104.4 | 111.9 | 106.2 |
| Sunny | 204 | 201 | 205 |
| Avg. July High | 85.2 | 85 | 85.8 |
| Avg. Jan. Low | 13.1 | 12.7 | 21.7 |
| Comfort Index (higher=better) | 7 | 7 | 7 |
| UV Index | 3.8 | 3.8 | 4.3 |
| Elevation ft. | 1053 | 1096 | 2443 |