Suttons Bay, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 37.2 °F (low) to 54 °F (high). Annual precipitation averages 32.7 Inches. Suttons Bay is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.9 °F | 28.1 °F | 2.14 in. |
| February | 15.7 °F | 29.7 °F | 1.48 in. |
| March | 21.9 °F | 38.8 °F | 1.82 in. |
| April | 31.8 °F | 50.8 °F | 2.9 in. |
| May | 42.8 °F | 64.1 °F | 3.12 in. |
| June | 53.0 °F | 74.4 °F | 3.14 in. |
| July | 58.4 °F | 78.7 °F | 2.57 in. |
| August | 58.3 °F | 77.5 °F | 2.97 in. |
| September | 51.7 °F | 70.5 °F | 3.56 in. |
| October | 40.9 °F | 57.1 °F | 3.94 in. |
| November | 32.0 °F | 44.5 °F | 2.74 in. |
| December | 23.3 °F | 33.7 °F | 2.3 in. |
| Annual | 37.2 °F | 54 °F | 32.68 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 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 |