Powhatan, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54.7 °F (low) to 77.3 °F (high). Annual precipitation averages 56.3 Inches. Powhatan is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 36.8 °F | 58.0 °F | 5.48 in. |
| February | 39.6 °F | 62.3 °F | 4.94 in. |
| March | 46.6 °F | 69.8 °F | 5.38 in. |
| April | 54.0 °F | 77.5 °F | 5.28 in. |
| May | 62.6 °F | 84.7 °F | 4.68 in. |
| June | 70.1 °F | 90.7 °F | 4.54 in. |
| July | 72.8 °F | 93.6 °F | 4.07 in. |
| August | 72.1 °F | 93.9 °F | 3.72 in. |
| September | 65.6 °F | 88.9 °F | 3.78 in. |
| October | 54.0 °F | 79.3 °F | 4.3 in. |
| November | 44.2 °F | 68.4 °F | 4.68 in. |
| December | 38.5 °F | 60.1 °F | 5.42 in. |
| Annual | 54.7 °F | 77.3 °F | 56.27 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |