Meggett, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13.4 °C (low) to 24.2 °C (high). Annual precipitation averages 1328.2 Millimeters. Meggett 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 Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.6 °C | 15.1 °C | 86.11 mm |
| February | 4.9 °C | 16.7 °C | 84.33 mm |
| March | 8.2 °C | 20.2 °C | 89.41 mm |
| April | 12.4 °C | 24.2 °C | 83.82 mm |
| May | 17.3 °C | 28 °C | 84.33 mm |
| June | 21.4 °C | 30.9 °C | 150.37 mm |
| July | 23.1 °C | 32.6 °C | 160.53 mm |
| August | 22.7 °C | 31.7 °C | 186.18 mm |
| September | 20.1 °C | 29.4 °C | 134.87 mm |
| October | 14.2 °C | 25.2 °C | 109.22 mm |
| November | 8.2 °C | 20.3 °C | 66.8 mm |
| December | 5.1 °C | 16.6 °C | 92.2 mm |
| Annual | 13.4 °C | 24.2 °C | 1328.17 mm |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |