Lenox, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10 °C (low) to 20.9 °C (high). Annual precipitation averages 1350.3 Millimeters. Lenox is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.7 °C | 7.7 °C | 99.82 mm |
| February | 0.1 °C | 10.2 °C | 112.52 mm |
| March | 4.4 °C | 15.4 °C | 129.03 mm |
| April | 9.6 °C | 21.4 °C | 133.86 mm |
| May | 15.3 °C | 26.2 °C | 141.48 mm |
| June | 19.7 °C | 30.4 °C | 112.01 mm |
| July | 21.6 °C | 31.9 °C | 100.84 mm |
| August | 20.3 °C | 31.5 °C | 79.76 mm |
| September | 16.2 °C | 28.4 °C | 89.41 mm |
| October | 9.7 °C | 22.6 °C | 104.65 mm |
| November | 4.1 °C | 15.3 °C | 115.82 mm |
| December | 0.2 °C | 9.5 °C | 131.06 mm |
| Annual | 10 °C | 20.9 °C | 1350.26 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |