North Myrtle Beach, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 56.3 °F (low) to 71.9 °F (high). Annual precipitation averages 53.5 Inches. North 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. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 37.7 °F | 55.1 °F | 3.72 in. |
| February | 39.6 °F | 57.4 °F | 3.49 in. |
| March | 45.9 °F | 63.7 °F | 3.78 in. |
| April | 54.9 °F | 71.2 °F | 3.37 in. |
| May | 63.4 °F | 78.0 °F | 3.59 in. |
| June | 71.2 °F | 83.9 °F | 5.15 in. |
| July | 74.7 °F | 86.6 °F | 6.03 in. |
| August | 73.5 °F | 86.0 °F | 6.18 in. |
| September | 68.6 °F | 82.6 °F | 7.08 in. |
| October | 58.2 °F | 74.8 °F | 4.34 in. |
| November | 47.1 °F | 65.4 °F | 3.09 in. |
| December | 41.1 °F | 58.3 °F | 3.69 in. |
| Annual | 56.3 °F | 71.9 °F | 53.51 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 30-40 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 |