Murrells Inlet, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 55.9 °F (low) to 72.9 °F (high). Annual precipitation averages 56.1 Inches. Murrells Inlet is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 37.7 °F | 56.0 °F | 3.77 in. |
| February | 40.1 °F | 58.7 °F | 3.23 in. |
| March | 45.8 °F | 64.6 °F | 4.12 in. |
| April | 54.4 °F | 72.8 °F | 3.75 in. |
| May | 62.9 °F | 79.8 °F | 3.68 in. |
| June | 70.5 °F | 85.0 °F | 5.26 in. |
| July | 73.9 °F | 88.0 °F | 6.0 in. |
| August | 72.8 °F | 86.6 °F | 7.1 in. |
| September | 68.0 °F | 82.9 °F | 7.46 in. |
| October | 57.5 °F | 75.5 °F | 5.12 in. |
| November | 46.4 °F | 66.2 °F | 2.9 in. |
| December | 40.8 °F | 59.2 °F | 3.72 in. |
| Annual | 55.9 °F | 72.9 °F | 56.11 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |