Frenchburg, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 6.6 °C (low) to 18.8 °C (high). Annual precipitation averages 1333 Millimeters. Frenchburg is located in USDA Plant Hardiness Zone 6b. 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 | -4.5 °C | 5.7 °C | 98.04 mm |
| February | -3.1 °C | 8 °C | 96.01 mm |
| March | 0.4 °C | 13.1 °C | 128.02 mm |
| April | 5.9 °C | 19.5 °C | 122.43 mm |
| May | 11.4 °C | 23.9 °C | 138.68 mm |
| June | 15.8 °C | 28.1 °C | 128.52 mm |
| July | 18 °C | 29.8 °C | 147.32 mm |
| August | 16.9 °C | 29.4 °C | 89.92 mm |
| September | 13.2 °C | 26.4 °C | 99.82 mm |
| October | 6.4 °C | 20.2 °C | 86.36 mm |
| November | 0.9 °C | 13.4 °C | 85.6 mm |
| December | -2.2 °C | 7.7 °C | 112.27 mm |
| Annual | 6.6 °C | 18.8 °C | 1332.99 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 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |