Hardinsburg, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.4 °C (low) to 19.3 °C (high). Annual precipitation averages 1290.3 Millimeters. Hardinsburg 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.3 °C | 5.7 °C | 92.71 mm |
| February | -2.8 °C | 8.2 °C | 93.22 mm |
| March | 1.2 °C | 13.6 °C | 120.4 mm |
| April | 6.8 °C | 19.9 °C | 123.95 mm |
| May | 12.5 °C | 24.5 °C | 148.34 mm |
| June | 17 °C | 28.9 °C | 119.13 mm |
| July | 19.2 °C | 30.6 °C | 115.32 mm |
| August | 17.8 °C | 30.1 °C | 82.55 mm |
| September | 13.9 °C | 27.2 °C | 89.92 mm |
| October | 7.7 °C | 21.2 °C | 96.77 mm |
| November | 1.6 °C | 13.7 °C | 96.77 mm |
| December | -1.9 °C | 7.9 °C | 111.25 mm |
| Annual | 7.4 °C | 19.3 °C | 1290.33 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |