Boyne City, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.8 °C (low) to 12.9 °C (high). Annual precipitation averages 882.4 Millimeters. Boyne City 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 Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.7 °C | -2.2 °C | 60.71 mm |
| February | -10.6 °C | -0.9 °C | 39.62 mm |
| March | -7.1 °C | 4.4 °C | 45.47 mm |
| April | -0.6 °C | 11.9 °C | 72.64 mm |
| May | 5.6 °C | 19.5 °C | 77.72 mm |
| June | 11 °C | 24.7 °C | 78.74 mm |
| July | 13.4 °C | 26.8 °C | 71.63 mm |
| August | 12.9 °C | 26.3 °C | 84.58 mm |
| September | 9.1 °C | 22.2 °C | 94.49 mm |
| October | 3.7 °C | 14.6 °C | 110.24 mm |
| November | -0.9 °C | 7 °C | 78.49 mm |
| December | -5.6 °C | 0.8 °C | 68.07 mm |
| Annual | 1.8 °C | 12.9 °C | 882.4 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |