Carbon Hill, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.5 °C (low) to 17.5 °C (high). Annual precipitation averages 1055.9 Millimeters. Carbon Hill 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 | -7.1 °C | 3.7 °C | 79.76 mm |
| February | -6.1 °C | 5.5 °C | 67.56 mm |
| March | -2.1 °C | 11.1 °C | 92.2 mm |
| April | 3.3 °C | 18.5 °C | 96.01 mm |
| May | 9.2 °C | 23.3 °C | 104.65 mm |
| June | 14.3 °C | 27.6 °C | 111.51 mm |
| July | 16.6 °C | 29.3 °C | 110.74 mm |
| August | 15.6 °C | 28.8 °C | 87.88 mm |
| September | 11.2 °C | 25.3 °C | 80.01 mm |
| October | 4.3 °C | 19 °C | 74.17 mm |
| November | -0.8 °C | 12.2 °C | 72.9 mm |
| December | -4 °C | 6.1 °C | 78.49 mm |
| Annual | 4.5 °C | 17.5 °C | 1055.88 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 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 |