Sparks, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13.2 °C (low) to 25.7 °C (high). Annual precipitation averages 1270.8 Millimeters. Sparks is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.9 °C | 16.4 °C | 117.09 mm |
| February | 5.6 °C | 18.5 °C | 103.63 mm |
| March | 8.6 °C | 22.2 °C | 130.81 mm |
| April | 12.2 °C | 25.9 °C | 85.85 mm |
| May | 16.7 °C | 29.8 °C | 68.58 mm |
| June | 20.8 °C | 32.3 °C | 141.99 mm |
| July | 22 °C | 33.2 °C | 135.64 mm |
| August | 21.9 °C | 32.8 °C | 145.29 mm |
| September | 19.4 °C | 30.9 °C | 105.16 mm |
| October | 13.8 °C | 26.8 °C | 77.47 mm |
| November | 7.9 °C | 21.6 °C | 62.23 mm |
| December | 5.3 °C | 17.8 °C | 97.03 mm |
| Annual | 13.2 °C | 25.7 °C | 1270.77 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |