| | Gretna, LA | Millington, TN | United States |
| Rainfall | 65.4 | 54 | 38.1 |
| Snowfall | 0.1 | 3.1 | 27.8 |
| Precipitation Days | 106.2 | 111.1 | 106.2 |
| Sunny | 216 | 212 | 205 |
| Avg. July High | 91.7 | 91.1 | 85.8 |
| Avg. Jan. Low | 44.3 | 30.2 | 21.7 |
| Comfort Index (higher=better) | 6.7 | 7.1 | 7 |
| UV Index | 6 | 4.8 | 4.3 |
| Elevation ft. | 0 | 266 | 2443 |