Lumber City, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.3 °C (low) to 25.4 °C (high). Annual precipitation averages 1213.9 Millimeters. Lumber City is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 2.5 °C | 15.9 °C | 110.74 mm |
| February | 4.2 °C | 17.9 °C | 99.82 mm |
| March | 7.3 °C | 21.4 °C | 113.28 mm |
| April | 11.3 °C | 25.8 °C | 84.07 mm |
| May | 16 °C | 29.8 °C | 71.37 mm |
| June | 20.3 °C | 32.4 °C | 121.92 mm |
| July | 21.9 °C | 33.6 °C | 124.21 mm |
| August | 21.6 °C | 33 °C | 150.37 mm |
| September | 18.7 °C | 30.6 °C | 105.41 mm |
| October | 12.6 °C | 26.3 °C | 72.64 mm |
| November | 6.8 °C | 21.2 °C | 66.29 mm |
| December | 3.9 °C | 16.9 °C | 93.73 mm |
| Annual | 12.3 °C | 25.4 °C | 1213.85 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |