Capac, Michigan has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.1 °C (low) to 14 °C (high). Annual precipitation averages 852.7 Millimeters. Capac is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.3 °C | -0.9 °C | 56.39 mm |
| February | -9.3 °C | 0.6 °C | 48.26 mm |
| March | -4.6 °C | 5.9 °C | 52.32 mm |
| April | 1.3 °C | 13.2 °C | 79.5 mm |
| May | 7.6 °C | 20 °C | 91.44 mm |
| June | 12.8 °C | 25.4 °C | 85.09 mm |
| July | 15.2 °C | 27.8 °C | 88.39 mm |
| August | 14.4 °C | 26.7 °C | 83.31 mm |
| September | 10.3 °C | 23.3 °C | 75.44 mm |
| October | 4.6 °C | 15.9 °C | 72.9 mm |
| November | -0.8 °C | 8.4 °C | 65.02 mm |
| December | -5.6 °C | 1.8 °C | 54.61 mm |
| Annual | 3.1 °C | 14 °C | 852.67 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°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 |