Dallas, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.2 °C (low) to 22.2 °C (high). Annual precipitation averages 1351 Millimeters. Dallas is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -0.1 °C | 11.3 °C | 124.46 mm |
| February | 1.5 °C | 13.6 °C | 126.49 mm |
| March | 4.9 °C | 18 °C | 131.57 mm |
| April | 9.3 °C | 22.7 °C | 111 mm |
| May | 14.3 °C | 26.5 °C | 101.6 mm |
| June | 18.7 °C | 29.9 °C | 105.66 mm |
| July | 20.7 °C | 31.6 °C | 122.94 mm |
| August | 20.2 °C | 31.2 °C | 101.09 mm |
| September | 16.8 °C | 28.4 °C | 105.66 mm |
| October | 10.3 °C | 23.1 °C | 88.39 mm |
| November | 4.3 °C | 17.2 °C | 110.24 mm |
| December | 1.5 °C | 12.6 °C | 121.92 mm |
| Annual | 10.2 °C | 22.2 °C | 1351.02 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| 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 |