Loyall, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7 °C (low) to 19.4 °C (high). Annual precipitation averages 1308.1 Millimeters. Loyall 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 | -3.6 °C | 7.4 °C | 108.97 mm |
| February | -2.3 °C | 9.6 °C | 112.52 mm |
| March | 1.1 °C | 14.7 °C | 124.46 mm |
| April | 5.8 °C | 20.3 °C | 120.4 mm |
| May | 11.3 °C | 24.4 °C | 115.82 mm |
| June | 15.7 °C | 27.8 °C | 112.78 mm |
| July | 18 °C | 29.2 °C | 128.52 mm |
| August | 17.3 °C | 29 °C | 104.65 mm |
| September | 13.8 °C | 26.3 °C | 88.65 mm |
| October | 6.8 °C | 20.7 °C | 75.95 mm |
| November | 1.1 °C | 14.6 °C | 91.95 mm |
| December | -1.4 °C | 9.3 °C | 123.44 mm |
| Annual | 7 °C | 19.4 °C | 1308.11 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |