Holly Springs, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10 °C (low) to 21.3 °C (high). Annual precipitation averages 1217.7 Millimeters. Holly Springs is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -0.6 °C | 10.4 °C | 85.09 mm |
| February | 0.6 °C | 12.3 °C | 76.2 mm |
| March | 4.1 °C | 16.7 °C | 99.57 mm |
| April | 9.1 °C | 21.8 °C | 92.2 mm |
| May | 14.3 °C | 25.6 °C | 88.14 mm |
| June | 18.8 °C | 29.5 °C | 114.81 mm |
| July | 21.1 °C | 31.3 °C | 126.75 mm |
| August | 20.2 °C | 30.3 °C | 133.1 mm |
| September | 17.1 °C | 27.2 °C | 135.13 mm |
| October | 10.2 °C | 21.9 °C | 91.19 mm |
| November | 4.1 °C | 16.6 °C | 86.11 mm |
| December | 1.1 °C | 12.1 °C | 89.41 mm |
| Annual | 10 °C | 21.3 °C | 1217.7 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |