Pearlington, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 58.4 °F (low) to 77.6 °F (high). Annual precipitation averages 67.3 Inches. Pearlington is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 11 - Feb. 20 through the first frost around Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 41.4 °F | 61.3 °F | 5.86 in. |
| February | 44.6 °F | 65.1 °F | 4.76 in. |
| March | 50.9 °F | 71.2 °F | 5.25 in. |
| April | 57.6 °F | 77.1 °F | 5.88 in. |
| May | 65.6 °F | 84.2 °F | 5.24 in. |
| June | 71.6 °F | 89.1 °F | 6.29 in. |
| July | 73.5 °F | 90.8 °F | 8.23 in. |
| August | 73.4 °F | 91.1 °F | 6.84 in. |
| September | 69.7 °F | 87.5 °F | 5.62 in. |
| October | 59.9 °F | 80.0 °F | 3.79 in. |
| November | 49.4 °F | 70.3 °F | 4.33 in. |
| December | 43.6 °F | 63.3 °F | 5.17 in. |
| Annual | 58.4 °F | 77.6 °F | 67.26 in. |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Feb. 11 - Feb. 20 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |