Ladson, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.8 °C (low) to 24.3 °C (high). Annual precipitation averages 1390.9 Millimeters. Ladson is located in USDA Plant Hardiness Zone 8b. 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 | 2.8 °C | 15.1 °C | 84.07 mm |
| February | 4.2 °C | 16.8 °C | 88.9 mm |
| March | 7.6 °C | 20.4 °C | 93.47 mm |
| April | 11.8 °C | 24.5 °C | 90.42 mm |
| May | 16.7 °C | 28.2 °C | 92.2 mm |
| June | 20.8 °C | 31.2 °C | 160.53 mm |
| July | 22.7 °C | 32.7 °C | 179.07 mm |
| August | 22.2 °C | 31.8 °C | 181.1 mm |
| September | 19.6 °C | 29.4 °C | 143.76 mm |
| October | 13.5 °C | 25.1 °C | 107.95 mm |
| November | 7.6 °C | 20.3 °C | 72.64 mm |
| December | 4.4 °C | 16.4 °C | 96.77 mm |
| Annual | 12.8 °C | 24.3 °C | 1390.88 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 8b : -9.4°C to -6.7°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 |