| | Gretna, VA | Greeley, CO | United States |
| Rainfall | 43.9 | 14.8 | 38.1 |
| Snowfall | 4 | 39.5 | 27.8 |
| Precipitation Days | 108.1 | 76.6 | 106.2 |
| Sunny | 222 | 244 | 205 |
| Avg. July High | 86.1 | 90.2 | 85.8 |
| Avg. Jan. Low | 24.4 | 14.7 | 21.7 |
| Comfort Index (higher=better) | 7.5 | 7.2 | 7 |
| UV Index | 4.5 | 5.2 | 4.3 |
| Elevation ft. | 840 | 4675 | 2443 |