Huntsville, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 44.4 °F (low) to 67.3 °F (high). Annual precipitation averages 58.1 Inches. Huntsville 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 25.5 °F | 45.3 °F | 4.82 in. |
| February | 27.9 °F | 49.4 °F | 5.08 in. |
| March | 34.1 °F | 58.2 °F | 5.62 in. |
| April | 42.7 °F | 68.8 °F | 5.24 in. |
| May | 52.4 °F | 76.5 °F | 4.9 in. |
| June | 60.2 °F | 82.9 °F | 5.09 in. |
| July | 64.3 °F | 85.7 °F | 5.88 in. |
| August | 63.0 °F | 85.0 °F | 4.29 in. |
| September | 56.2 °F | 80.0 °F | 4.03 in. |
| October | 43.9 °F | 69.7 °F | 3.28 in. |
| November | 33.8 °F | 57.9 °F | 4.03 in. |
| December | 29.0 °F | 48.6 °F | 5.82 in. |
| Annual | 44.4 °F | 67.3 °F | 58.08 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |