Henry, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.8 °C (low) to 20.4 °C (high). Annual precipitation averages 1384.8 Millimeters. Henry 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 Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -2.7 °C | 7.6 °C | 104.39 mm |
| February | -1.2 °C | 10.2 °C | 113.03 mm |
| March | 3.3 °C | 15.4 °C | 132.84 mm |
| April | 8.8 °C | 21 °C | 128.52 mm |
| May | 13.9 °C | 25.3 °C | 150.37 mm |
| June | 18.3 °C | 29.3 °C | 112.27 mm |
| July | 20.2 °C | 31.1 °C | 109.73 mm |
| August | 19.2 °C | 31 °C | 87.88 mm |
| September | 15.4 °C | 27.7 °C | 97.54 mm |
| October | 8.4 °C | 21.7 °C | 97.03 mm |
| November | 2.9 °C | 15 °C | 118.11 mm |
| December | -0.6 °C | 9.3 °C | 133.1 mm |
| Annual | 8.8 °C | 20.4 °C | 1384.81 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |