Sparta, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.9 °C (low) to 23.6 °C (high). Annual precipitation averages 1172.2 Millimeters. Sparta is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1 °C | 13.4 °C | 103.12 mm |
| February | 2.3 °C | 15.4 °C | 103.89 mm |
| March | 5.7 °C | 19.7 °C | 117.35 mm |
| April | 9.9 °C | 23.8 °C | 79.5 mm |
| May | 14.9 °C | 27.8 °C | 85.85 mm |
| June | 19.3 °C | 31 °C | 105.16 mm |
| July | 21.2 °C | 32.8 °C | 118.62 mm |
| August | 20.7 °C | 31.9 °C | 108.71 mm |
| September | 17.5 °C | 29.2 °C | 93.47 mm |
| October | 11.2 °C | 24.3 °C | 70.87 mm |
| November | 5.2 °C | 19 °C | 77.22 mm |
| December | 2.3 °C | 14.7 °C | 108.46 mm |
| Annual | 10.9 °C | 23.6 °C | 1172.22 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |