Stanwood, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 35.6 °F (low) to 55.8 °F (high). Annual precipitation averages 36.4 Inches. Stanwood is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 13.7 °F | 28.6 °F | 2.38 in. |
| February | 13.4 °F | 31.5 °F | 1.84 in. |
| March | 21.2 °F | 41.9 °F | 2.33 in. |
| April | 32.7 °F | 55.1 °F | 3.73 in. |
| May | 44.2 °F | 67.4 °F | 3.94 in. |
| June | 53.9 °F | 76.9 °F | 3.47 in. |
| July | 57.4 °F | 80.7 °F | 3.22 in. |
| August | 55.7 °F | 79.0 °F | 3.7 in. |
| September | 48.3 °F | 71.9 °F | 3.02 in. |
| October | 37.4 °F | 58.5 °F | 3.57 in. |
| November | 28.4 °F | 44.9 °F | 2.94 in. |
| December | 20.3 °F | 33.6 °F | 2.27 in. |
| Annual | 35.6 °F | 55.8 °F | 36.41 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |