Gatlinburg, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.5 °F (low) to 68.8 °F (high). Annual precipitation averages 55.6 Inches. Gatlinburg is located in USDA Plant Hardiness Zone 7b. 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 | 27.1 °F | 48.0 °F | 4.66 in. |
| February | 29.8 °F | 52.3 °F | 4.17 in. |
| March | 35.8 °F | 60.9 °F | 5.28 in. |
| April | 43.6 °F | 70.4 °F | 4.65 in. |
| May | 53.0 °F | 77.3 °F | 5.14 in. |
| June | 60.8 °F | 83.3 °F | 5.51 in. |
| July | 64.5 °F | 86.0 °F | 6.0 in. |
| August | 63.4 °F | 85.3 °F | 4.25 in. |
| September | 57.5 °F | 80.6 °F | 3.94 in. |
| October | 45.4 °F | 71.0 °F | 3.11 in. |
| November | 34.9 °F | 60.0 °F | 4.0 in. |
| December | 30.2 °F | 51.0 °F | 4.91 in. |
| Annual | 45.5 °F | 68.8 °F | 55.62 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 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 |