Findlay, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.3 °C (low) to 15.7 °C (high). Annual precipitation averages 941.8 Millimeters. Findlay is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.3 °C | 0.7 °C | 65.28 mm |
| February | -6.3 °C | 2.4 °C | 54.36 mm |
| March | -1.8 °C | 8.1 °C | 65.79 mm |
| April | 4 °C | 15.6 °C | 93.47 mm |
| May | 10.4 °C | 21.9 °C | 99.06 mm |
| June | 15.8 °C | 26.9 °C | 104.65 mm |
| July | 17.6 °C | 28.8 °C | 99.31 mm |
| August | 16.4 °C | 27.8 °C | 89.41 mm |
| September | 12.4 °C | 24.8 °C | 72.14 mm |
| October | 6.3 °C | 17.7 °C | 68.58 mm |
| November | 0.7 °C | 9.9 °C | 65.02 mm |
| December | -4.1 °C | 3.4 °C | 64.77 mm |
| Annual | 5.3 °C | 15.7 °C | 941.84 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 |