Cardington, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5 °C (low) to 15.8 °C (high). Annual precipitation averages 1045.5 Millimeters. Cardington 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 | -7.4 °C | 1.1 °C | 80.52 mm |
| February | -6.5 °C | 2.8 °C | 57.4 mm |
| March | -1.9 °C | 8.5 °C | 73.91 mm |
| April | 4 °C | 16.1 °C | 99.82 mm |
| May | 10.1 °C | 22 °C | 111.76 mm |
| June | 15.3 °C | 26.7 °C | 115.57 mm |
| July | 17.1 °C | 28.4 °C | 106.43 mm |
| August | 15.9 °C | 27.6 °C | 90.68 mm |
| September | 11.9 °C | 24.4 °C | 85.6 mm |
| October | 5.6 °C | 17.6 °C | 71.63 mm |
| November | 0.3 °C | 10.2 °C | 77.22 mm |
| December | -4.2 °C | 3.8 °C | 74.93 mm |
| Annual | 5 °C | 15.8 °C | 1045.47 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 |