Cedar Hill, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.5 °C (low) to 20.2 °C (high). Annual precipitation averages 1304.3 Millimeters. Cedar Hill is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3 °C | 7.1 °C | 97.28 mm |
| February | -1.3 °C | 9.7 °C | 113.79 mm |
| March | 2.5 °C | 14.7 °C | 118.87 mm |
| April | 7.9 °C | 20.6 °C | 129.29 mm |
| May | 13.3 °C | 25.1 °C | 136.4 mm |
| June | 18 °C | 29.4 °C | 101.35 mm |
| July | 19.9 °C | 31.3 °C | 112.78 mm |
| August | 18.8 °C | 31.2 °C | 90.42 mm |
| September | 14.9 °C | 27.9 °C | 97.28 mm |
| October | 8.6 °C | 21.8 °C | 96.01 mm |
| November | 2.7 °C | 14.8 °C | 92.96 mm |
| December | -0.9 °C | 9.1 °C | 117.86 mm |
| Annual | 8.5 °C | 20.2 °C | 1304.29 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |