Myrtle Beach, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 56.2 °F (low) to 72.2 °F (high). Annual precipitation averages 52.7 Inches. Myrtle Beach 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 | 37.8 °F | 55.9 °F | 3.31 in. |
| February | 39.9 °F | 58.4 °F | 3.55 in. |
| March | 45.9 °F | 64.3 °F | 3.65 in. |
| April | 54.8 °F | 71.2 °F | 3.06 in. |
| May | 63.1 °F | 78.2 °F | 3.38 in. |
| June | 70.9 °F | 83.8 °F | 5.21 in. |
| July | 74.5 °F | 86.7 °F | 5.85 in. |
| August | 73.3 °F | 85.7 °F | 6.01 in. |
| September | 68.5 °F | 82.3 °F | 8.03 in. |
| October | 57.9 °F | 74.6 °F | 4.16 in. |
| November | 47.0 °F | 65.9 °F | 2.9 in. |
| December | 41.0 °F | 58.8 °F | 3.57 in. |
| Annual | 56.2 °F | 72.2 °F | 52.68 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 |