Cedar Hill, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.4 °C (low) to 24.5 °C (high). Annual precipitation averages 1021.6 Millimeters. Cedar Hill 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. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.5 °C | 13.6 °C | 68.07 mm |
| February | 3.6 °C | 15.6 °C | 72.9 mm |
| March | 7.5 °C | 19.8 °C | 89.92 mm |
| April | 11.5 °C | 23.9 °C | 93.73 mm |
| May | 16.8 °C | 28.1 °C | 116.08 mm |
| June | 21.4 °C | 32.5 °C | 101.85 mm |
| July | 23 °C | 34.7 °C | 55.12 mm |
| August | 22.8 °C | 35 °C | 59.44 mm |
| September | 18.8 °C | 31.3 °C | 82.55 mm |
| October | 12.7 °C | 25.5 °C | 123.19 mm |
| November | 7 °C | 19.2 °C | 77.47 mm |
| December | 2.4 °C | 14.3 °C | 81.28 mm |
| Annual | 12.4 °C | 24.5 °C | 1021.6 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 30-40 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 |