Flowery Branch, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10 °C (low) to 21.6 °C (high). Annual precipitation averages 1403.4 Millimeters. Flowery Branch is located in USDA Plant Hardiness Zone 8a. 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 | -0.2 °C | 10.7 °C | 130.56 mm |
| February | 1.3 °C | 12.9 °C | 125.22 mm |
| March | 4.7 °C | 17.3 °C | 129.29 mm |
| April | 8.9 °C | 21.9 °C | 107.44 mm |
| May | 13.9 °C | 25.8 °C | 108.2 mm |
| June | 18.4 °C | 29.4 °C | 117.35 mm |
| July | 20.4 °C | 31.1 °C | 118.11 mm |
| August | 19.9 °C | 30.6 °C | 125.73 mm |
| September | 16.6 °C | 27.7 °C | 109.98 mm |
| October | 10.3 °C | 22.4 °C | 98.81 mm |
| November | 4.4 °C | 16.9 °C | 106.17 mm |
| December | 1.6 °C | 12.2 °C | 126.49 mm |
| Annual | 10 °C | 21.6 °C | 1403.35 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| 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 |