Tiro, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.7 °C (low) to 15.4 °C (high). Annual precipitation averages 1037.1 Millimeters. Tiro 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 | 0.7 °C | 76.71 mm |
| February | -7 °C | 2.3 °C | 53.59 mm |
| March | -2.4 °C | 7.8 °C | 71.88 mm |
| April | 3.4 °C | 15.6 °C | 101.09 mm |
| May | 9.6 °C | 21.7 °C | 107.44 mm |
| June | 14.8 °C | 26.4 °C | 117.09 mm |
| July | 16.6 °C | 28.3 °C | 105.16 mm |
| August | 15.7 °C | 27.4 °C | 92.71 mm |
| September | 11.7 °C | 24.3 °C | 88.14 mm |
| October | 5.7 °C | 17.3 °C | 77.47 mm |
| November | 0.2 °C | 9.7 °C | 74.68 mm |
| December | -4.5 °C | 3.5 °C | 71.12 mm |
| Annual | 4.7 °C | 15.4 °C | 1037.08 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 |