Kirtland, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.5 °C (low) to 14.7 °C (high). Annual precipitation averages 1185.4 Millimeters. Kirtland 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 | -6.6 °C | 1.3 °C | 91.69 mm |
| February | -6.3 °C | 2.3 °C | 63.75 mm |
| March | -2.4 °C | 6.8 °C | 81.79 mm |
| April | 3.7 °C | 14.1 °C | 92.71 mm |
| May | 9.7 °C | 20.1 °C | 101.6 mm |
| June | 14.9 °C | 25 °C | 104.14 mm |
| July | 17.3 °C | 26.9 °C | 118.87 mm |
| August | 16.6 °C | 26.3 °C | 106.43 mm |
| September | 13.1 °C | 23 °C | 111.25 mm |
| October | 7.3 °C | 16.4 °C | 114.05 mm |
| November | 1.9 °C | 10 °C | 101.35 mm |
| December | -2.7 °C | 4.1 °C | 97.79 mm |
| Annual | 5.5 °C | 14.7 °C | 1185.42 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |