| 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 9a: 20F to 25F |
| Average First Frost Date: | Dec. 1 - Dec. 10 |
| Average Last Frost Date: | Feb. 11 - Feb. 20 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 34a - Northern Humid Gulf Coastal Prairies |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 70663 - Sulphur, LA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 40 | 43 | 50 | 56 | 64 | 71 | 73 | 72 | 67 | 57 | 48 | 42 | 57 |
| Avg Max Temp (°F) | 60 | 64 | 71 | 77 | 84 | 89 | 91 | 92 | 88 | 80 | 70 | 63 | 77 |
| Avg Precip (In.) | 5.86 | 3.71 | 4.07 | 3.82 | 5.72 | 5.99 | 5.2 | 4.75 | 5.61 | 4.36 | 4.91 | 5.23 | 59.24 |