Dollar Bay, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 31.4 °F (low) to 51.9 °F (high). Annual precipitation averages 34.3 Inches. Dollar Bay is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 8.9 °F | 24.3 °F | 3.54 in. |
| February | 7.3 °F | 27.2 °F | 1.61 in. |
| March | 15.2 °F | 37.0 °F | 1.61 in. |
| April | 26.8 °F | 48.4 °F | 2.51 in. |
| May | 38.0 °F | 62.5 °F | 3.24 in. |
| June | 47.9 °F | 72.9 °F | 2.93 in. |
| July | 54.2 °F | 78.1 °F | 2.92 in. |
| August | 53.6 °F | 77.0 °F | 2.69 in. |
| September | 47.1 °F | 69.3 °F | 3.38 in. |
| October | 36.0 °F | 55.1 °F | 3.52 in. |
| November | 26.1 °F | 40.6 °F | 2.64 in. |
| December | 15.7 °F | 29.8 °F | 3.69 in. |
| Annual | 31.4 °F | 51.9 °F | 34.28 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |