Landrum, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.3 °C (low) to 21.6 °C (high). Annual precipitation averages 1451.9 Millimeters. Landrum is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -0.9 °C | 10.7 °C | 124.71 mm |
| February | 0.4 °C | 12.9 °C | 104.14 mm |
| March | 3.9 °C | 17.1 °C | 123.44 mm |
| April | 8.5 °C | 22.1 °C | 119.89 mm |
| May | 13.3 °C | 25.9 °C | 119.38 mm |
| June | 17.7 °C | 29.6 °C | 123.95 mm |
| July | 19.8 °C | 31.4 °C | 133.1 mm |
| August | 19.2 °C | 30.4 °C | 131.57 mm |
| September | 16 °C | 27.6 °C | 126.49 mm |
| October | 9.4 °C | 22.3 °C | 104.14 mm |
| November | 3.6 °C | 16.6 °C | 109.73 mm |
| December | 0.6 °C | 12.1 °C | 131.32 mm |
| Annual | 9.3 °C | 21.6 °C | 1451.86 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |