Langley, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.9 °C (low) to 24.5 °C (high). Annual precipitation averages 1211.6 Millimeters. Langley is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.3 °C | 14.3 °C | 108.2 mm |
| February | 2.7 °C | 16.4 °C | 96.77 mm |
| March | 6.2 °C | 20.6 °C | 111 mm |
| April | 10.2 °C | 24.9 °C | 81.28 mm |
| May | 15.1 °C | 28.9 °C | 83.06 mm |
| June | 19.4 °C | 32.2 °C | 127.25 mm |
| July | 20.7 °C | 33.7 °C | 117.09 mm |
| August | 20.6 °C | 32.9 °C | 124.21 mm |
| September | 17.1 °C | 30.3 °C | 97.79 mm |
| October | 11.6 °C | 25.1 °C | 77.22 mm |
| November | 4.2 °C | 19.6 °C | 82.3 mm |
| December | 1.4 °C | 15.3 °C | 105.41 mm |
| Annual | 10.9 °C | 24.5 °C | 1211.58 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |