Wisner, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54.8 °F (low) to 77 °F (high). Annual precipitation averages 58.2 Inches. Wisner 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 | 37.0 °F | 57.6 °F | 5.63 in. |
| February | 39.5 °F | 61.9 °F | 5.26 in. |
| March | 46.9 °F | 69.8 °F | 5.42 in. |
| April | 54.2 °F | 77.0 °F | 5.87 in. |
| May | 62.8 °F | 84.5 °F | 4.73 in. |
| June | 69.8 °F | 90.3 °F | 4.62 in. |
| July | 72.4 °F | 92.9 °F | 4.25 in. |
| August | 71.3 °F | 93.4 °F | 3.82 in. |
| September | 65.6 °F | 88.7 °F | 3.7 in. |
| October | 54.1 °F | 79.9 °F | 4.34 in. |
| November | 44.5 °F | 68.3 °F | 5.0 in. |
| December | 38.9 °F | 59.9 °F | 5.58 in. |
| Annual | 54.8 °F | 77 °F | 58.22 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |