Blountville, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.4 °F (low) to 68 °F (high). Annual precipitation averages 46.1 Inches. Blountville 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 26.6 °F | 46.3 °F | 3.81 in. |
| February | 29.0 °F | 50.4 °F | 3.82 in. |
| March | 35.6 °F | 59.1 °F | 4.25 in. |
| April | 44.1 °F | 68.9 °F | 4.05 in. |
| May | 53.1 °F | 76.7 °F | 3.98 in. |
| June | 61.1 °F | 83.2 °F | 4.12 in. |
| July | 65.0 °F | 86.0 °F | 5.07 in. |
| August | 63.6 °F | 85.3 °F | 3.89 in. |
| September | 57.3 °F | 80.6 °F | 2.88 in. |
| October | 45.4 °F | 70.2 °F | 2.73 in. |
| November | 34.7 °F | 59.1 °F | 3.1 in. |
| December | 29.6 °F | 49.6 °F | 4.4 in. |
| Annual | 45.4 °F | 68 °F | 46.1 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |