Lumpkin, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.9 °C (low) to 24.7 °C (high). Annual precipitation averages 1324.1 Millimeters. Lumpkin is located in USDA Plant Hardiness Zone 8b. 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 | 2.8 °C | 14.9 °C | 119.89 mm |
| February | 4.2 °C | 17.2 °C | 115.32 mm |
| March | 6.9 °C | 21.2 °C | 127.76 mm |
| April | 10.6 °C | 24.9 °C | 107.7 mm |
| May | 15.6 °C | 29.1 °C | 73.91 mm |
| June | 19.3 °C | 31.7 °C | 114.05 mm |
| July | 21.1 °C | 32.8 °C | 145.8 mm |
| August | 20.8 °C | 32.3 °C | 114.05 mm |
| September | 18.2 °C | 30.1 °C | 100.84 mm |
| October | 12.2 °C | 25.9 °C | 73.91 mm |
| November | 6.7 °C | 20.1 °C | 97.28 mm |
| December | 4 °C | 16.3 °C | 133.6 mm |
| Annual | 11.9 °C | 24.7 °C | 1324.11 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| 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 |