| 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: | 73k - Southern Holocene Meander Belts |
| Heat Zone Days: | 121 - 150 days Over 86°F |
Annual Climate Data for ZIP Code 70043 - Chalmette, LA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 43 | 46 | 52 | 58 | 66 | 71 | 73 | 73 | 70 | 60 | 51 | 45 | 59 |
| Avg Max Temp (°F) | 63 | 66 | 73 | 78 | 85 | 90 | 91 | 91 | 88 | 80 | 72 | 65 | 79 |
| Avg Precip (In.) | 5.56 | 5 | 5.4 | 4.84 | 5.25 | 5.47 | 6.19 | 5.65 | 5.56 | 3.07 | 4.78 | 4.58 | 61.34 |