Cumberland Gap, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.6 °C (low) to 19.7 °C (high). Annual precipitation averages 1406.7 Millimeters. Cumberland Gap is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.2 °C | 7.4 °C | 125.98 mm |
| February | -1.6 °C | 9.7 °C | 124.21 mm |
| March | 1.8 °C | 14.8 °C | 134.11 mm |
| April | 6.6 °C | 20.6 °C | 124.21 mm |
| May | 12.1 °C | 24.7 °C | 112.52 mm |
| June | 16.4 °C | 28.2 °C | 133.86 mm |
| July | 18.6 °C | 29.8 °C | 136.65 mm |
| August | 17.9 °C | 29.5 °C | 104.14 mm |
| September | 14.2 °C | 27 °C | 93.22 mm |
| October | 7.7 °C | 21.2 °C | 77.98 mm |
| November | 1.8 °C | 14.4 °C | 98.55 mm |
| December | -1.1 °C | 9.1 °C | 141.22 mm |
| Annual | 7.6 °C | 19.7 °C | 1406.65 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |