Coalton, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.1 °C (low) to 17.8 °C (high). Annual precipitation averages 1123.4 Millimeters. Coalton 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.5 °C | 4 °C | 83.31 mm |
| February | -4.4 °C | 6.2 °C | 79.5 mm |
| March | -0.3 °C | 11.7 °C | 102.36 mm |
| April | 5.3 °C | 18.9 °C | 101.35 mm |
| May | 10.8 °C | 23.5 °C | 112.01 mm |
| June | 15.6 °C | 27.6 °C | 114.55 mm |
| July | 17.8 °C | 29.3 °C | 114.3 mm |
| August | 16.7 °C | 28.8 °C | 85.85 mm |
| September | 12.7 °C | 25.6 °C | 89.15 mm |
| October | 6.1 °C | 18.9 °C | 79.76 mm |
| November | 0.7 °C | 12.2 °C | 74.17 mm |
| December | -2.8 °C | 6.3 °C | 87.12 mm |
| Annual | 6.1 °C | 17.8 °C | 1123.43 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 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 |