Lewisburg, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 46.1 °F (low) to 68.1 °F (high). Annual precipitation averages 52.3 Inches. Lewisburg is located in USDA Plant Hardiness Zone 7a. 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 | 25.6 °F | 44.0 °F | 3.84 in. |
| February | 28.3 °F | 48.6 °F | 4.2 in. |
| March | 35.4 °F | 58.0 °F | 4.77 in. |
| April | 44.9 °F | 68.9 °F | 4.98 in. |
| May | 55.0 °F | 77.4 °F | 5.53 in. |
| June | 64.0 °F | 85.4 °F | 4.53 in. |
| July | 67.4 °F | 88.5 °F | 4.37 in. |
| August | 65.0 °F | 87.8 °F | 3.74 in. |
| September | 57.5 °F | 81.8 °F | 3.83 in. |
| October | 46.1 °F | 71.3 °F | 3.86 in. |
| November | 34.9 °F | 58.0 °F | 3.9 in. |
| December | 29.2 °F | 47.5 °F | 4.7 in. |
| Annual | 46.1 °F | 68.1 °F | 52.25 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 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |