Lewisburg, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.4 °C (low) to 21.4 °C (high). Annual precipitation averages 1481.8 Millimeters. Lewisburg 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 | -2.3 °C | 8.9 °C | 123.95 mm |
| February | -0.7 °C | 11.6 °C | 131.32 mm |
| March | 3.1 °C | 16.3 °C | 145.54 mm |
| April | 7.4 °C | 21.7 °C | 131.83 mm |
| May | 12.9 °C | 26 °C | 123.19 mm |
| June | 17.6 °C | 30.2 °C | 129.79 mm |
| July | 19.6 °C | 31.7 °C | 119.63 mm |
| August | 18.8 °C | 31.7 °C | 111.51 mm |
| September | 14.7 °C | 28.8 °C | 113.79 mm |
| October | 8.1 °C | 22.7 °C | 93.47 mm |
| November | 2.4 °C | 16 °C | 104.65 mm |
| December | -0.7 °C | 10.6 °C | 153.16 mm |
| Annual | 8.4 °C | 21.4 °C | 1481.83 mm |
| 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 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |