Marine City, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 40.4 °F (low) to 57.3 °F (high). Annual precipitation averages 35.9 Inches. 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 | 18.1 °F | 31.0 °F | 2.84 in. |
| February | 18.6 °F | 33.0 °F | 2.33 in. |
| March | 26.5 °F | 42.2 °F | 2.4 in. |
| April | 37.0 °F | 55.1 °F | 3.11 in. |
| May | 47.9 °F | 67.2 °F | 3.69 in. |
| June | 57.4 °F | 77.8 °F | 3.51 in. |
| July | 62.1 °F | 82.0 °F | 3.09 in. |
| August | 60.8 °F | 80.4 °F | 3.36 in. |
| September | 53.9 °F | 74.0 °F | 3.27 in. |
| October | 43.4 °F | 60.8 °F | 2.82 in. |
| November | 33.8 °F | 47.4 °F | 2.75 in. |
| December | 25.0 °F | 36.5 °F | 2.68 in. |
| Annual | 40.4 °F | 57.3 °F | 35.85 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 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |