Blackey, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 6.9 °C (low) to 19.8 °C (high). Annual precipitation averages 1196.3 Millimeters. Blackey is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.9 °C | 7.3 °C | 87.63 mm |
| February | -2.6 °C | 9.9 °C | 88.39 mm |
| March | 0.8 °C | 14.8 °C | 110.49 mm |
| April | 5.7 °C | 20.9 °C | 107.95 mm |
| May | 11.3 °C | 24.9 °C | 120.65 mm |
| June | 15.7 °C | 28.3 °C | 111.76 mm |
| July | 18.4 °C | 29.7 °C | 127.51 mm |
| August | 17.8 °C | 29.6 °C | 102.36 mm |
| September | 14 °C | 26.8 °C | 82.55 mm |
| October | 6.9 °C | 21.2 °C | 74.93 mm |
| November | 0.9 °C | 14.8 °C | 80.77 mm |
| December | -1.8 °C | 9.2 °C | 101.35 mm |
| Annual | 6.9 °C | 19.8 °C | 1196.34 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| 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 | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |