Evergreen, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 56.7 °F (low) to 77.8 °F (high). Annual precipitation averages 61.2 Inches. Evergreen is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 39.3 °F | 59.8 °F | 6.52 in. |
| February | 42.9 °F | 64.0 °F | 5.2 in. |
| March | 49.5 °F | 71.4 °F | 4.57 in. |
| April | 56.2 °F | 78.0 °F | 5.36 in. |
| May | 64.7 °F | 84.9 °F | 5.07 in. |
| June | 70.9 °F | 90.1 °F | 5.13 in. |
| July | 73.1 °F | 92.0 °F | 4.66 in. |
| August | 72.2 °F | 92.6 °F | 4.73 in. |
| September | 67.2 °F | 88.4 °F | 4.42 in. |
| October | 56.3 °F | 80.1 °F | 4.61 in. |
| November | 46.4 °F | 69.7 °F | 5.34 in. |
| December | 41.4 °F | 62.1 °F | 5.61 in. |
| Annual | 56.7 °F | 77.8 °F | 61.22 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |