McComb, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41.4 °F (low) to 60.3 °F (high). Annual precipitation averages 36.6 Inches. McComb is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 18.6 °F | 33.1 °F | 2.46 in. |
| February | 20.4 °F | 36.3 °F | 2.08 in. |
| March | 28.5 °F | 46.7 °F | 2.51 in. |
| April | 38.9 °F | 60.3 °F | 3.55 in. |
| May | 50.6 °F | 71.5 °F | 4.0 in. |
| June | 60.2 °F | 80.7 °F | 3.91 in. |
| July | 63.4 °F | 84.0 °F | 3.92 in. |
| August | 61.4 °F | 82.1 °F | 3.48 in. |
| September | 54.1 °F | 76.7 °F | 2.83 in. |
| October | 43.1 °F | 64.0 °F | 2.71 in. |
| November | 32.9 °F | 49.7 °F | 2.63 in. |
| December | 24.4 °F | 38.1 °F | 2.47 in. |
| Annual | 41.4 °F | 60.3 °F | 36.55 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |