Antioch, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.6 °C (low) to 17.1 °C (high). Annual precipitation averages 1160 Millimeters. Antioch is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.9 °C | 3.3 °C | 88.65 mm |
| February | -4.9 °C | 5.2 °C | 76.2 mm |
| March | -1.1 °C | 10.4 °C | 99.31 mm |
| April | 4.6 °C | 17.8 °C | 99.82 mm |
| May | 10 °C | 22.6 °C | 117.35 mm |
| June | 14.9 °C | 27.1 °C | 119.89 mm |
| July | 17.4 °C | 28.9 °C | 119.13 mm |
| August | 16.1 °C | 28.4 °C | 97.54 mm |
| September | 12.3 °C | 25.3 °C | 92.96 mm |
| October | 5.8 °C | 18.6 °C | 79.5 mm |
| November | 0.7 °C | 11.7 °C | 81.03 mm |
| December | -2.9 °C | 5.8 °C | 88.65 mm |
| Annual | 5.6 °C | 17.1 °C | 1160.03 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | May 1 - May 10 |
| 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 |