| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F |
| Average First Frost Date: | Jan. 1 - Jan. 10 |
| Average Last Frost Date: | Feb. 1 - Feb. 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 70401 - Hammond, LA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 39 | 41 | 48 | 54 | 62 | 68 | 71 | 70 | 66 | 55 | 46 | 41 | 55 |
| Avg Max Temp (°F) | 61 | 65 | 72 | 78 | 85 | 90 | 92 | 92 | 88 | 80 | 70 | 63 | 78 |
| Avg Precip (In.) | 6.49 | 5.54 | 6.04 | 5.79 | 5.6 | 5.22 | 6.58 | 5.92 | 5.28 | 3.51 | 5.08 | 5.45 | 66.51 |