Starr, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.4 °C (low) to 22.6 °C (high). Annual precipitation averages 1266.4 Millimeters. Starr 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. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.1 °C | 11.9 °C | 106.68 mm |
| February | 1.6 °C | 14 °C | 108.71 mm |
| March | 5.1 °C | 18.2 °C | 116.08 mm |
| April | 9.5 °C | 22.9 °C | 90.42 mm |
| May | 14.5 °C | 26.9 °C | 90.93 mm |
| June | 19 °C | 30.6 °C | 112.78 mm |
| July | 20.9 °C | 32.5 °C | 105.41 mm |
| August | 20.5 °C | 31.5 °C | 112.52 mm |
| September | 17.2 °C | 28.5 °C | 100.58 mm |
| October | 10.6 °C | 23.2 °C | 93.98 mm |
| November | 4.6 °C | 17.7 °C | 105.92 mm |
| December | 1.6 °C | 13.2 °C | 122.43 mm |
| Annual | 10.4 °C | 22.6 °C | 1266.44 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 8a : -12.2°C to -9.4°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 |