Zwolle, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54.4 °F (low) to 77.1 °F (high). Annual precipitation averages 55.4 Inches. Zwolle 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 | 36.6 °F | 58.5 °F | 5.34 in. |
| February | 39.9 °F | 62.7 °F | 4.75 in. |
| March | 46.5 °F | 70.1 °F | 5.26 in. |
| April | 53.7 °F | 76.9 °F | 4.99 in. |
| May | 62.4 °F | 83.8 °F | 4.42 in. |
| June | 69.5 °F | 89.9 °F | 4.56 in. |
| July | 72.0 °F | 93.0 °F | 3.81 in. |
| August | 71.3 °F | 93.5 °F | 3.9 in. |
| September | 65.2 °F | 88.6 °F | 3.63 in. |
| October | 53.7 °F | 79.3 °F | 4.35 in. |
| November | 44.3 °F | 68.3 °F | 4.83 in. |
| December | 38.2 °F | 60.1 °F | 5.53 in. |
| Annual | 54.4 °F | 77.1 °F | 55.37 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 |