Holly Springs, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.8 °C (low) to 21.6 °C (high). Annual precipitation averages 1361.9 Millimeters. Holly Springs is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -0.6 °C | 10.5 °C | 125.98 mm |
| February | 0.9 °C | 12.9 °C | 122.68 mm |
| March | 4.6 °C | 17.3 °C | 127.51 mm |
| April | 8.9 °C | 22.1 °C | 112.27 mm |
| May | 13.8 °C | 26 °C | 103.63 mm |
| June | 18.3 °C | 29.5 °C | 104.39 mm |
| July | 20.3 °C | 31.2 °C | 127 mm |
| August | 19.8 °C | 30.9 °C | 110.74 mm |
| September | 16.4 °C | 28 °C | 105.92 mm |
| October | 9.9 °C | 22.6 °C | 90.17 mm |
| November | 4 °C | 16.6 °C | 108.2 mm |
| December | 1.2 °C | 11.9 °C | 123.44 mm |
| Annual | 9.8 °C | 21.6 °C | 1361.93 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| 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 | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |