Olanta, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51.9 °F (low) to 75.3 °F (high). Annual precipitation averages 49.3 Inches. Olanta is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 33.8 °F | 56.9 °F | 3.56 in. |
| February | 36.1 °F | 60.4 °F | 3.47 in. |
| March | 41.9 °F | 67.6 °F | 3.64 in. |
| April | 50.2 °F | 76.5 °F | 3.34 in. |
| May | 59.2 °F | 83.2 °F | 3.84 in. |
| June | 67.5 °F | 88.8 °F | 5.0 in. |
| July | 70.7 °F | 91.8 °F | 5.42 in. |
| August | 69.6 °F | 90.2 °F | 5.61 in. |
| September | 63.7 °F | 85.3 °F | 5.14 in. |
| October | 52.2 °F | 76.7 °F | 3.53 in. |
| November | 41.5 °F | 67.1 °F | 2.96 in. |
| December | 36.5 °F | 59.4 °F | 3.83 in. |
| Annual | 51.9 °F | 75.3 °F | 49.34 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |