Ashland, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.2 °C (low) to 15.5 °C (high). Annual precipitation averages 1008.1 Millimeters. Ashland is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8 °C | 0.9 °C | 71.37 mm |
| February | -7.2 °C | 2.6 °C | 51.56 mm |
| March | -2.8 °C | 8 °C | 72.9 mm |
| April | 3.1 °C | 15.7 °C | 93.73 mm |
| May | 9.1 °C | 21.6 °C | 104.9 mm |
| June | 14.2 °C | 26.3 °C | 114.3 mm |
| July | 16.1 °C | 28.3 °C | 106.43 mm |
| August | 15.2 °C | 27.6 °C | 92.46 mm |
| September | 11.1 °C | 24.2 °C | 85.09 mm |
| October | 5 °C | 17.3 °C | 76.71 mm |
| November | -0.2 °C | 9.8 °C | 72.64 mm |
| December | -4.7 °C | 3.6 °C | 66.04 mm |
| Annual | 4.2 °C | 15.5 °C | 1008.13 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°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 |