Edison, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.8 °C (low) to 15.6 °C (high). Annual precipitation averages 1050 Millimeters. Edison 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 | -7.7 °C | 0.9 °C | 82.8 mm |
| February | -6.8 °C | 2.6 °C | 57.15 mm |
| March | -2.2 °C | 8.3 °C | 72.39 mm |
| April | 3.7 °C | 15.8 °C | 99.82 mm |
| May | 9.8 °C | 21.8 °C | 113.79 mm |
| June | 15.1 °C | 26.6 °C | 114.55 mm |
| July | 16.7 °C | 28.3 °C | 105.92 mm |
| August | 15.7 °C | 27.5 °C | 91.44 mm |
| September | 11.7 °C | 24.3 °C | 86.87 mm |
| October | 5.4 °C | 17.3 °C | 71.37 mm |
| November | 0.1 °C | 9.9 °C | 78.49 mm |
| December | -4.4 °C | 3.7 °C | 75.44 mm |
| Annual | 4.8 °C | 15.6 °C | 1050.03 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 |