Kirtland Hills, 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 14.5 °C (high). Annual precipitation averages 1222 Millimeters. Kirtland Hills is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.8 °C | 1.2 °C | 95.76 mm |
| February | -6.6 °C | 2.4 °C | 66.29 mm |
| March | -2.6 °C | 7.1 °C | 84.58 mm |
| April | 3.4 °C | 13.7 °C | 94.23 mm |
| May | 9.5 °C | 19.7 °C | 104.14 mm |
| June | 14.7 °C | 24.6 °C | 106.93 mm |
| July | 17.1 °C | 26.6 °C | 122.68 mm |
| August | 16.2 °C | 25.9 °C | 109.22 mm |
| September | 12.7 °C | 22.8 °C | 113.79 mm |
| October | 6.9 °C | 16.2 °C | 117.09 mm |
| November | 1.7 °C | 9.9 °C | 105.41 mm |
| December | -2.9 °C | 4.1 °C | 101.85 mm |
| Annual | 5.3 °C | 14.5 °C | 1221.97 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |