| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F |
| Average First Frost Date: | Dec. 1 - Dec. 10 |
| Average Last Frost Date: | Mar. 1 - Mar. 10 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 75a - Gulf Coast Flatwoods |
| Heat Zone Days: | 121 - 150 days Over 86°F |
Annual Climate Data for ZIP Code 70471 - Mandeville, LA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 40 | 43 | 49 | 55 | 63 | 69 | 72 | 71 | 67 | 56 | 48 | 42 | 56 |
| Avg Max Temp (°F) | 61 | 65 | 72 | 78 | 85 | 90 | 92 | 92 | 88 | 80 | 71 | 64 | 78 |
| Avg Precip (In.) | 5.91 | 5.35 | 6.15 | 5.19 | 5.42 | 5.04 | 6.27 | 5.4 | 5.05 | 3.3 | 4.96 | 5.07 | 63.1 |