Ewen, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 29.4 °F (low) to 51.4 °F (high). Annual precipitation averages 33.9 Inches. Ewen is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 4.8 °F | 22.3 °F | 1.89 in. |
| February | 3.9 °F | 26.3 °F | 1.49 in. |
| March | 12.5 °F | 37.5 °F | 1.79 in. |
| April | 25.9 °F | 49.5 °F | 2.79 in. |
| May | 38.5 °F | 64.4 °F | 3.26 in. |
| June | 48.4 °F | 73.8 °F | 3.62 in. |
| July | 53.2 °F | 78.0 °F | 3.83 in. |
| August | 51.3 °F | 76.3 °F | 3.29 in. |
| September | 44.6 °F | 68.2 °F | 3.52 in. |
| October | 33.7 °F | 53.7 °F | 3.72 in. |
| November | 23.5 °F | 38.9 °F | 2.42 in. |
| December | 11.9 °F | 27.3 °F | 2.24 in. |
| Annual | 29.4 °F | 51.4 °F | 33.86 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |