Nicholasville, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.6 °C (low) to 18.5 °C (high). Annual precipitation averages 1225 Millimeters. Nicholasville is located in USDA Plant Hardiness Zone 7a. 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 | -4.1 °C | 5.2 °C | 87.88 mm |
| February | -2.6 °C | 7.7 °C | 92.96 mm |
| March | 1.3 °C | 12.6 °C | 113.79 mm |
| April | 6.8 °C | 18.6 °C | 113.28 mm |
| May | 12.7 °C | 23.5 °C | 133.1 mm |
| June | 16.9 °C | 28.3 °C | 127.25 mm |
| July | 19.1 °C | 29.9 °C | 119.89 mm |
| August | 18.1 °C | 29.3 °C | 87.63 mm |
| September | 14.3 °C | 26.3 °C | 88.9 mm |
| October | 8.1 °C | 20.3 °C | 77.47 mm |
| November | 1.8 °C | 12.9 °C | 80.01 mm |
| December | -1.8 °C | 7.2 °C | 102.87 mm |
| Annual | 7.6 °C | 18.5 °C | 1225.03 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 7a : -17.8°C to -15°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 |