Friendship, Ohio has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 5.9 °C (low) to 19.1 °C (high). Annual precipitation averages 1109.7 Millimeters. Friendship 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 | -5.1 °C | 5.5 °C | 85.6 mm |
| February | -4.1 °C | 7.7 °C | 78.49 mm |
| March | -0.6 °C | 13 °C | 103.89 mm |
| April | 4.8 °C | 20 °C | 102.36 mm |
| May | 10.5 °C | 24.6 °C | 115.06 mm |
| June | 15.4 °C | 28.6 °C | 109.47 mm |
| July | 17.6 °C | 30.3 °C | 115.32 mm |
| August | 16.7 °C | 30.1 °C | 83.06 mm |
| September | 12.7 °C | 26.9 °C | 84.07 mm |
| October | 5.9 °C | 20.8 °C | 75.44 mm |
| November | 0.1 °C | 13.5 °C | 68.83 mm |
| December | -2.7 °C | 7.7 °C | 88.14 mm |
| Annual | 5.9 °C | 19.1 °C | 1109.73 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 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |