Mar-Mac, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.5 °C (low) to 22.6 °C (high). Annual precipitation averages 1257.8 Millimeters. Mar-Mac is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0 °C | 11.9 °C | 87.12 mm |
| February | 1 °C | 13.8 °C | 72.39 mm |
| March | 4.6 °C | 17.8 °C | 99.06 mm |
| April | 9.7 °C | 22.9 °C | 88.65 mm |
| May | 14.8 °C | 26.8 °C | 95.5 mm |
| June | 19.4 °C | 30.7 °C | 116.33 mm |
| July | 21.6 °C | 32.3 °C | 148.34 mm |
| August | 20.6 °C | 31.2 °C | 138.94 mm |
| September | 17.6 °C | 28.4 °C | 157.73 mm |
| October | 10.6 °C | 23.4 °C | 85.85 mm |
| November | 4.6 °C | 17.9 °C | 82.04 mm |
| December | 1.7 °C | 13.6 °C | 85.85 mm |
| Annual | 10.5 °C | 22.6 °C | 1257.8 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |