Dallas, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13.4 °C (low) to 24.9 °C (high). Annual precipitation averages 1015.3 Millimeters. Dallas is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 2.2 °C | 13.4 °C | 68.33 mm |
| February | 4.2 °C | 15.9 °C | 74.42 mm |
| March | 8.2 °C | 19.8 °C | 90.17 mm |
| April | 12.5 °C | 24.4 °C | 89.92 mm |
| May | 17.9 °C | 28.6 °C | 119.38 mm |
| June | 22.3 °C | 33.1 °C | 100.08 mm |
| July | 24.1 °C | 35.4 °C | 52.07 mm |
| August | 24 °C | 35.7 °C | 57.66 mm |
| September | 20.2 °C | 31.9 °C | 80.77 mm |
| October | 13.8 °C | 26.2 °C | 120.9 mm |
| November | 7.7 °C | 19.5 °C | 76.71 mm |
| December | 3.3 °C | 14.6 °C | 84.84 mm |
| Annual | 13.4 °C | 24.9 °C | 1015.25 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |