Quinby, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51.9 °F (low) to 74.6 °F (high). Annual precipitation averages 48.2 Inches. Quinby 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. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 33.7 °F | 55.9 °F | 3.64 in. |
| February | 35.7 °F | 59.4 °F | 3.38 in. |
| March | 41.6 °F | 66.6 °F | 3.65 in. |
| April | 50.3 °F | 75.5 °F | 3.27 in. |
| May | 59.4 °F | 82.4 °F | 3.77 in. |
| June | 67.7 °F | 88.4 °F | 4.76 in. |
| July | 71.1 °F | 91.3 °F | 5.25 in. |
| August | 69.6 °F | 89.6 °F | 5.4 in. |
| September | 64.0 °F | 84.7 °F | 4.84 in. |
| October | 52.1 °F | 75.9 °F | 3.32 in. |
| November | 41.5 °F | 66.3 °F | 3.08 in. |
| December | 36.5 °F | 58.6 °F | 3.79 in. |
| Annual | 51.9 °F | 74.6 °F | 48.15 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| 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 |