| | Mertzon, TX | Menard, TX | United States |
| Rainfall | 21.4 | 25.5 | 38.1 |
| Snowfall | 1.1 | 0.8 | 27.8 |
| Precipitation Days | 53 | 63.2 | 106.2 |
| Sunny | 251 | 256 | 205 |
| Avg. July High | 94.9 | 93.1 | 85.8 |
| Avg. Jan. Low | 31.2 | 30 | 21.7 |
| Comfort Index (higher=better) | 7.8 | 7.8 | 7 |
| UV Index | 5.7 | 6 | 4.3 |
| Elevation ft. | 2201 | 1883 | 2443 |