Kingsport, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.9 °F (low) to 68.5 °F (high). Annual precipitation averages 45 Inches. Kingsport 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 | 26.7 °F | 46.2 °F | 3.72 in. |
| February | 29.3 °F | 50.5 °F | 4.0 in. |
| March | 36.0 °F | 59.5 °F | 4.18 in. |
| April | 44.6 °F | 70.2 °F | 4.01 in. |
| May | 53.6 °F | 77.8 °F | 3.71 in. |
| June | 61.7 °F | 84.1 °F | 3.74 in. |
| July | 65.8 °F | 87.1 °F | 4.82 in. |
| August | 64.4 °F | 86.1 °F | 3.85 in. |
| September | 57.9 °F | 81.2 °F | 3.12 in. |
| October | 45.7 °F | 71.2 °F | 2.37 in. |
| November | 34.9 °F | 59.1 °F | 3.11 in. |
| December | 29.8 °F | 49.4 °F | 4.34 in. |
| Annual | 45.9 °F | 68.5 °F | 44.97 in. |
| 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 : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |