Mack, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7 °C (low) to 17.9 °C (high). Annual precipitation averages 1188.7 Millimeters. Mack 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 | -5.2 °C | 3.6 °C | 92.71 mm |
| February | -4.1 °C | 5.9 °C | 71.63 mm |
| March | 0.6 °C | 11.5 °C | 108.2 mm |
| April | 6.6 °C | 18.7 °C | 123.19 mm |
| May | 11.9 °C | 23.6 °C | 127 mm |
| June | 17 °C | 28.3 °C | 120.65 mm |
| July | 18.7 °C | 29.9 °C | 107.7 mm |
| August | 17.9 °C | 29.7 °C | 85.09 mm |
| September | 13.9 °C | 26.1 °C | 83.06 mm |
| October | 7.4 °C | 19.4 °C | 85.6 mm |
| November | 1.7 °C | 11.8 °C | 86.36 mm |
| December | -2.7 °C | 5.9 °C | 97.54 mm |
| Annual | 7 °C | 17.9 °C | 1188.73 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 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |