Clearwater, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11 °C (low) to 24.6 °C (high). Annual precipitation averages 1194.8 Millimeters. Clearwater 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 | 14.4 °C | 104.9 mm |
| February | 2.7 °C | 16.5 °C | 96.52 mm |
| March | 6.1 °C | 20.6 °C | 110.24 mm |
| April | 10.1 °C | 24.9 °C | 80.26 mm |
| May | 15 °C | 28.9 °C | 82.3 mm |
| June | 19.6 °C | 32.1 °C | 124.97 mm |
| July | 20.9 °C | 33.7 °C | 115.82 mm |
| August | 20.9 °C | 32.9 °C | 121.41 mm |
| September | 17.5 °C | 30.4 °C | 97.79 mm |
| October | 11.6 °C | 25.3 °C | 75.44 mm |
| November | 4.6 °C | 19.8 °C | 81.03 mm |
| December | 1.8 °C | 15.4 °C | 104.14 mm |
| Annual | 11 °C | 24.6 °C | 1194.82 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 |