| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°F |
| 2012 Hardiness Zone: | Zone 9a: 20°F to 25°F |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F |
| Average First Frost Date: | Jan. 1 - Jan. 10 |
| Average Last Frost Date: | Jan. 21 - Jan. 31 |
| 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 70734 - Geismar, LA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 41 | 44 | 50 | 56 | 65 | 71 | 73 | 73 | 68 | 58 | 49 | 43 | 58 |
| Avg Max Temp (°F) | 61 | 64 | 71 | 78 | 85 | 90 | 91 | 91 | 87 | 80 | 71 | 64 | 78 |
| Avg Precip (In.) | 5.86 | 4.83 | 5.12 | 4.95 | 4.82 | 5.86 | 6.12 | 5.67 | 4.82 | 3.71 | 4.81 | 5.11 | 61.67 |