North Myrtle Beach, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13.5 °C (low) to 22.2 °C (high). Annual precipitation averages 1359.2 Millimeters. 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 | 3.2 °C | 12.8 °C | 94.49 mm |
| February | 4.2 °C | 14.1 °C | 88.65 mm |
| March | 7.7 °C | 17.6 °C | 96.01 mm |
| April | 12.7 °C | 21.8 °C | 85.6 mm |
| May | 17.4 °C | 25.6 °C | 91.19 mm |
| June | 21.8 °C | 28.8 °C | 130.81 mm |
| July | 23.7 °C | 30.3 °C | 153.16 mm |
| August | 23.1 °C | 30 °C | 156.97 mm |
| September | 20.3 °C | 28.1 °C | 179.83 mm |
| October | 14.6 °C | 23.8 °C | 110.24 mm |
| November | 8.4 °C | 18.6 °C | 78.49 mm |
| December | 5.1 °C | 14.6 °C | 93.73 mm |
| Annual | 13.5 °C | 22.2 °C | 1359.17 mm |
| 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 : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |