Marine City, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4.7 °C (low) to 14.1 °C (high). Annual precipitation averages 910.6 Millimeters. Marine City 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.7 °C | -0.6 °C | 72.14 mm |
| February | -7.4 °C | 0.6 °C | 59.18 mm |
| March | -3.1 °C | 5.7 °C | 60.96 mm |
| April | 2.8 °C | 12.8 °C | 78.99 mm |
| May | 8.8 °C | 19.6 °C | 93.73 mm |
| June | 14.1 °C | 25.4 °C | 89.15 mm |
| July | 16.7 °C | 27.8 °C | 78.49 mm |
| August | 16 °C | 26.9 °C | 85.34 mm |
| September | 12.2 °C | 23.3 °C | 83.06 mm |
| October | 6.3 °C | 16 °C | 71.63 mm |
| November | 1 °C | 8.6 °C | 69.85 mm |
| December | -3.9 °C | 2.5 °C | 68.07 mm |
| Annual | 4.7 °C | 14.1 °C | 910.59 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 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 | Dfb - Humid Continental Mild Summer, Wet All Year |