Blandville, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.8 °C (low) to 20.6 °C (high). Annual precipitation averages 1325.6 Millimeters. Blandville 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 | -2.7 °C | 7.3 °C | 99.82 mm |
| February | -1 °C | 10 °C | 103.89 mm |
| March | 3.3 °C | 15.4 °C | 127.76 mm |
| April | 8.1 °C | 21.1 °C | 135.89 mm |
| May | 13.8 °C | 25.9 °C | 132.84 mm |
| June | 18.5 °C | 30.1 °C | 108.71 mm |
| July | 20.6 °C | 31.9 °C | 110.24 mm |
| August | 19.2 °C | 31.3 °C | 81.28 mm |
| September | 14.9 °C | 28.1 °C | 89.15 mm |
| October | 8.7 °C | 22.1 °C | 104.14 mm |
| November | 2.7 °C | 14.8 °C | 112.52 mm |
| December | -0.9 °C | 9.3 °C | 119.38 mm |
| Annual | 8.8 °C | 20.6 °C | 1325.62 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 7a : -17.8°C to -15°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |