| CLIMATE | Mount Vernon | Rapid City | United States |
| Rainfall (in.) | 32.3 | 18.1 | 36.5 |
| Snowfall (in.) | 3.7 | 36.9 | 25 |
| Precipitation Days | 154 | 85 | 100 |
| Sunny Days | 156 | 226 | 205 |
| Avg. July High | 73 | 86 | 86.5 |
| Avg. Jan. Low | 33.6 | 12.4 | 20.5 |
| Comfort Index (higher=better) | 79 | 61 | 44 |
| UV Index | 2.6 | 4.6 | 4.3 |
| Elevation ft. | 136 | 3,368 | 1,443 |