| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°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. 21 - Dec. 31 |
| Average Last Frost Date: | Feb. 1 - Feb. 10 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 74d - Baton Rouge Terrace |
| Heat Zone Days: | 121 - 150 days Over 86°F |
Annual Climate Data for ZIP Code 70817 - Baton Rouge, LA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 40 | 43 | 50 | 56 | 64 | 70 | 72 | 72 | 68 | 57 | 48 | 42 | 57 |
| Avg Max Temp (°F) | 61 | 64 | 71 | 78 | 84 | 90 | 91 | 91 | 88 | 80 | 71 | 63 | 78 |
| Avg Precip (In.) | 6.1 | 5.1 | 5.3 | 5.33 | 5.21 | 5.56 | 5.97 | 5.74 | 4.91 | 3.65 | 4.89 | 5.24 | 63 |