Pearlington, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 14.7 °C (low) to 25.3 °C (high). Annual precipitation averages 1708.4 Millimeters. 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 | 5.2 °C | 16.3 °C | 148.84 mm |
| February | 7 °C | 18.4 °C | 120.9 mm |
| March | 10.5 °C | 21.8 °C | 133.35 mm |
| April | 14.2 °C | 25.1 °C | 149.35 mm |
| May | 18.7 °C | 29 °C | 133.1 mm |
| June | 22 °C | 31.7 °C | 159.77 mm |
| July | 23.1 °C | 32.7 °C | 209.04 mm |
| August | 23 °C | 32.8 °C | 173.74 mm |
| September | 20.9 °C | 30.8 °C | 142.75 mm |
| October | 15.5 °C | 26.7 °C | 96.27 mm |
| November | 9.7 °C | 21.3 °C | 109.98 mm |
| December | 6.4 °C | 17.4 °C | 131.32 mm |
| Annual | 14.7 °C | 25.3 °C | 1708.41 mm |
| 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 : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |