Flat Lick, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.1 °C (low) to 19.8 °C (high). Annual precipitation averages 1381.5 Millimeters. Flat Lick 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.7 °C | 7.4 °C | 112.27 mm |
| February | -2.3 °C | 9.7 °C | 117.6 mm |
| March | 1.2 °C | 14.7 °C | 131.32 mm |
| April | 6.1 °C | 20.4 °C | 127.51 mm |
| May | 11.7 °C | 24.7 °C | 116.84 mm |
| June | 16.1 °C | 28.7 °C | 139.7 mm |
| July | 18.2 °C | 30.1 °C | 138.68 mm |
| August | 17.7 °C | 29.6 °C | 111.51 mm |
| September | 13.8 °C | 27 °C | 84.33 mm |
| October | 6.7 °C | 21.1 °C | 76.71 mm |
| November | 1.1 °C | 14.7 °C | 95 mm |
| December | -1.7 °C | 9.5 °C | 130.05 mm |
| Annual | 7.1 °C | 19.8 °C | 1381.52 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| 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 |