Willshire, 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 1014.2 Millimeters. Willshire 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 | -7.8 °C | 0.4 °C | 66.29 mm |
| February | -6.8 °C | 2.3 °C | 55.63 mm |
| March | -2.1 °C | 8.4 °C | 69.6 mm |
| April | 3.8 °C | 16 °C | 98.81 mm |
| May | 10.1 °C | 22.2 °C | 114.55 mm |
| June | 15.7 °C | 27.1 °C | 112.27 mm |
| July | 17.4 °C | 29.1 °C | 110.49 mm |
| August | 16.2 °C | 28.1 °C | 97.03 mm |
| September | 12 °C | 24.9 °C | 77.98 mm |
| October | 5.9 °C | 18 °C | 72.9 mm |
| November | 0.3 °C | 9.8 °C | 75.95 mm |
| December | -4.6 °C | 3.2 °C | 62.74 mm |
| Annual | 5 °C | 15.8 °C | 1014.24 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 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 |