Bratenahl, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.7 °C (low) to 14.8 °C (high). Annual precipitation averages 1018.6 Millimeters. Bratenahl is located in USDA Plant Hardiness Zone 7a. 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 | -5.5 °C | 1.6 °C | 74.68 mm |
| February | -5.2 °C | 2.4 °C | 54.61 mm |
| March | -1.6 °C | 6.5 °C | 71.37 mm |
| April | 4.7 °C | 14.1 °C | 88.39 mm |
| May | 11 °C | 20 °C | 89.92 mm |
| June | 16.4 °C | 25 °C | 90.93 mm |
| July | 18.8 °C | 26.9 °C | 99.06 mm |
| August | 17.9 °C | 26.4 °C | 93.22 mm |
| September | 14.2 °C | 23.3 °C | 99.57 mm |
| October | 8.4 °C | 16.9 °C | 98.3 mm |
| November | 2.9 °C | 10.1 °C | 80.52 mm |
| December | -2.1 °C | 4.3 °C | 77.98 mm |
| Annual | 6.7 °C | 14.8 °C | 1018.55 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 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |