Henderson, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48.5 °F (low) to 70.6 °F (high). Annual precipitation averages 58.3 Inches. Henderson 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 | 28.6 °F | 48.4 °F | 4.22 in. |
| February | 31.5 °F | 53.1 °F | 5.42 in. |
| March | 38.9 °F | 62.1 °F | 6.12 in. |
| April | 47.2 °F | 71.6 °F | 5.74 in. |
| May | 57.1 °F | 79.1 °F | 5.68 in. |
| June | 65.3 °F | 86.1 °F | 4.68 in. |
| July | 68.8 °F | 89.2 °F | 4.87 in. |
| August | 67.1 °F | 88.9 °F | 3.41 in. |
| September | 60.0 °F | 83.2 °F | 4.28 in. |
| October | 47.9 °F | 72.7 °F | 4.1 in. |
| November | 37.8 °F | 61.0 °F | 4.12 in. |
| December | 31.6 °F | 51.2 °F | 5.62 in. |
| Annual | 48.5 °F | 70.6 °F | 58.26 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |