| 2023 Hardiness Zone: | Zone 9b: 25°F to 30°F |
| 2012 Hardiness Zone: | Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F |
| Average First Frost Date: | Frost Rare |
| Average Last Frost Date: | Frost Rare |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 73o - Coastal Marshes |
| Heat Zone Days: | 121 - 150 days Over 86°F |
Annual Climate Data for ZIP Code 70056 - Gretna, LA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 44 | 46 | 53 | 58 | 66 | 72 | 74 | 74 | 70 | 60 | 52 | 46 | 60 |
| Avg Max Temp (°F) | 63 | 66 | 73 | 78 | 85 | 90 | 91 | 91 | 88 | 80 | 72 | 65 | 78 |
| Avg Precip (In.) | 5.56 | 4.9 | 5.28 | 4.86 | 5.25 | 5.75 | 6.35 | 5.88 | 5.5 | 3.13 | 4.76 | 4.57 | 61.8 |