Walton, Kentucky has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.2 °C (low) to 17.9 °C (high). Annual precipitation averages 1150.4 Millimeters. Walton is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.1 °C | 3.8 °C | 83.82 mm |
| February | -3.7 °C | 6.3 °C | 73.66 mm |
| March | 0.8 °C | 11.6 °C | 104.39 mm |
| April | 6.7 °C | 18.3 °C | 115.06 mm |
| May | 12.3 °C | 23.3 °C | 125.22 mm |
| June | 16.9 °C | 28 °C | 116.84 mm |
| July | 18.8 °C | 29.8 °C | 106.93 mm |
| August | 18.2 °C | 29.3 °C | 85.85 mm |
| September | 14.4 °C | 25.9 °C | 79.76 mm |
| October | 8 °C | 19.8 °C | 82.3 mm |
| November | 1.9 °C | 12.1 °C | 84.58 mm |
| December | -2.4 °C | 6.2 °C | 91.95 mm |
| Annual | 7.2 °C | 17.9 °C | 1150.36 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |