Fairlawn, Ohio has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 41.8 °F (low) to 59.7 °F (high). Annual precipitation averages 39.7 Inches. Fairlawn 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 | 19.9 °F | 34.0 °F | 2.72 in. |
| February | 21.0 °F | 36.7 °F | 2.13 in. |
| March | 28.6 °F | 46.0 °F | 3.03 in. |
| April | 39.7 °F | 59.5 °F | 3.58 in. |
| May | 50.3 °F | 70.5 °F | 4.0 in. |
| June | 59.5 °F | 79.0 °F | 4.08 in. |
| July | 63.2 °F | 83.1 °F | 4.09 in. |
| August | 61.5 °F | 81.6 °F | 3.57 in. |
| September | 54.5 °F | 74.8 °F | 3.54 in. |
| October | 43.8 °F | 62.3 °F | 3.22 in. |
| November | 34.1 °F | 49.7 °F | 2.91 in. |
| December | 25.9 °F | 38.6 °F | 2.81 in. |
| Annual | 41.8 °F | 59.7 °F | 39.68 in. |
| 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 : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |