Lithia Springs, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.5 °C (low) to 22 °C (high). Annual precipitation averages 1375.9 Millimeters. Lithia 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. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.1 °C | 11.4 °C | 124.46 mm |
| February | 1.7 °C | 13.7 °C | 124.71 mm |
| March | 5.3 °C | 18 °C | 131.57 mm |
| April | 9.7 °C | 22.5 °C | 107.95 mm |
| May | 14.7 °C | 26.2 °C | 105.66 mm |
| June | 19 °C | 29.5 °C | 107.95 mm |
| July | 20.9 °C | 31.1 °C | 135.38 mm |
| August | 20.4 °C | 30.7 °C | 107.95 mm |
| September | 17.2 °C | 27.9 °C | 105.16 mm |
| October | 10.7 °C | 22.8 °C | 92.2 mm |
| November | 4.7 °C | 17.3 °C | 109.73 mm |
| December | 1.7 °C | 12.7 °C | 123.19 mm |
| Annual | 10.5 °C | 22 °C | 1375.91 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| 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 |