Ball Ground, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.4 °C (low) to 21.6 °C (high). Annual precipitation averages 1404.6 Millimeters. Ball Ground 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 | -0.9 °C | 10.3 °C | 132.08 mm |
| February | 0.8 °C | 12.7 °C | 124.46 mm |
| March | 4.1 °C | 17.3 °C | 133.6 mm |
| April | 8.2 °C | 22.1 °C | 112.52 mm |
| May | 13.4 °C | 26.1 °C | 103.38 mm |
| June | 17.8 °C | 29.6 °C | 111.76 mm |
| July | 19.9 °C | 31.2 °C | 121.92 mm |
| August | 19.4 °C | 30.9 °C | 114.3 mm |
| September | 15.9 °C | 28.1 °C | 111.25 mm |
| October | 9.4 °C | 22.6 °C | 98.55 mm |
| November | 3.5 °C | 16.6 °C | 112.27 mm |
| December | 0.8 °C | 11.8 °C | 128.52 mm |
| Annual | 9.4 °C | 21.6 °C | 1404.61 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 |