Cornersville, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.8 °C (low) to 21.2 °C (high). Annual precipitation averages 1518.2 Millimeters. Cornersville is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.8 °C | 8.8 °C | 128.78 mm |
| February | -0.3 °C | 11.4 °C | 135.89 mm |
| March | 3.6 °C | 16.3 °C | 147.83 mm |
| April | 8.1 °C | 21.5 °C | 133.86 mm |
| May | 13.3 °C | 25.9 °C | 124.21 mm |
| June | 17.7 °C | 29.9 °C | 132.59 mm |
| July | 19.8 °C | 31.5 °C | 121.16 mm |
| August | 18.9 °C | 31.4 °C | 115.82 mm |
| September | 15.2 °C | 28.6 °C | 116.33 mm |
| October | 8.7 °C | 22.5 °C | 95.5 mm |
| November | 2.7 °C | 15.9 °C | 107.19 mm |
| December | -0.3 °C | 10.4 °C | 159 mm |
| Annual | 8.8 °C | 21.2 °C | 1518.16 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |