Gilbert, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51.8 °F (low) to 74.2 °F (high). Annual precipitation averages 48.2 Inches. Gilbert 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 | 33.9 °F | 55.6 °F | 4.06 in. |
| February | 36.2 °F | 59.3 °F | 3.68 in. |
| March | 42.2 °F | 66.7 °F | 4.22 in. |
| April | 50.2 °F | 74.9 °F | 3.27 in. |
| May | 59.1 °F | 82.1 °F | 3.47 in. |
| June | 67.2 °F | 88.3 °F | 5.0 in. |
| July | 70.2 °F | 91.1 °F | 4.78 in. |
| August | 69.3 °F | 89.5 °F | 4.81 in. |
| September | 63.6 °F | 84.4 °F | 3.94 in. |
| October | 52.0 °F | 75.2 °F | 3.41 in. |
| November | 41.5 °F | 65.3 °F | 3.49 in. |
| December | 36.0 °F | 57.7 °F | 4.09 in. |
| Annual | 51.8 °F | 74.2 °F | 48.22 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| 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 | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |