Whitley City, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 6.8 °C (low) to 19.2 °C (high). Annual precipitation averages 1414.8 Millimeters. Whitley City 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 | -3.8 °C | 6.9 °C | 116.84 mm |
| February | -2.7 °C | 9 °C | 108.2 mm |
| March | 0.9 °C | 13.9 °C | 134.87 mm |
| April | 6 °C | 19.9 °C | 120.65 mm |
| May | 11.4 °C | 24.2 °C | 131.32 mm |
| June | 15.5 °C | 28.1 °C | 126.24 mm |
| July | 17.9 °C | 29.9 °C | 157.23 mm |
| August | 17.1 °C | 29 °C | 98.3 mm |
| September | 13.4 °C | 26.1 °C | 94.23 mm |
| October | 6.3 °C | 20.9 °C | 81.79 mm |
| November | 1.1 °C | 14 °C | 98.04 mm |
| December | -1.6 °C | 8.9 °C | 147.07 mm |
| Annual | 6.8 °C | 19.2 °C | 1414.78 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| 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 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |