| | Mercedes, TX | La Feria, TX | United States |
| Rainfall | 24.8 | 24.8 | 38.1 |
| Snowfall | 0.1 | 0.1 | 27.8 |
| Precipitation Days | 65 | 65 | 106.2 |
| Sunny | 223 | 230 | 205 |
| Avg. July High | 94.8 | 94.8 | 85.8 |
| Avg. Jan. Low | 48.9 | 48.9 | 21.7 |
| Comfort Index (higher=better) | 6.4 | 6.4 | 7 |
| UV Index | 6.1 | 6.5 | 4.3 |
| Elevation ft. | 69 | 56 | 2443 |