Mitchellville, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.8 °C (low) to 20 °C (high). Annual precipitation averages 1338.6 Millimeters. Mitchellville is located in USDA Plant Hardiness Zone 7b. 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 | -2.8 °C | 6.9 °C | 106.93 mm |
| February | -1.1 °C | 9.6 °C | 112.27 mm |
| March | 3.1 °C | 14.6 °C | 127.25 mm |
| April | 8 °C | 20.4 °C | 122.94 mm |
| May | 13.8 °C | 24.9 °C | 140.72 mm |
| June | 18.2 °C | 29.2 °C | 115.57 mm |
| July | 20.1 °C | 31 °C | 117.09 mm |
| August | 19.2 °C | 30.7 °C | 89.66 mm |
| September | 15.2 °C | 27.5 °C | 92.71 mm |
| October | 8.8 °C | 21.5 °C | 92.46 mm |
| November | 3.1 °C | 14.5 °C | 94.74 mm |
| December | -0.4 °C | 9 °C | 126.24 mm |
| Annual | 8.8 °C | 20 °C | 1338.58 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°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 |