Big Bay, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1 °C (low) to 10.4 °C (high). Annual precipitation averages 855 Millimeters. Big 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 | -11.3 °C | -3.9 °C | 62.23 mm |
| February | -11.7 °C | -2.7 °C | 45.72 mm |
| March | -7.6 °C | 2.4 °C | 48.77 mm |
| April | -1.6 °C | 8 °C | 74.17 mm |
| May | 4.2 °C | 15.4 °C | 72.9 mm |
| June | 9.4 °C | 21.1 °C | 78.49 mm |
| July | 13.4 °C | 24.2 °C | 81.03 mm |
| August | 13.4 °C | 23.7 °C | 80.26 mm |
| September | 9.8 °C | 19.9 °C | 94.49 mm |
| October | 3.6 °C | 12.3 °C | 96.01 mm |
| November | -2.2 °C | 5.1 °C | 65.53 mm |
| December | -7.6 °C | -0.9 °C | 55.37 mm |
| Annual | 1 °C | 10.4 °C | 854.97 mm |
| 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 : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |