Bellaire, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.9 °C (low) to 12.6 °C (high). Annual precipitation averages 855.5 Millimeters. Bellaire is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.5 °C | -2.3 °C | 55.63 mm |
| February | -10.4 °C | -1.2 °C | 38.86 mm |
| March | -7 °C | 4.2 °C | 45.47 mm |
| April | -0.4 °C | 11.7 °C | 73.91 mm |
| May | 5.7 °C | 19 °C | 77.98 mm |
| June | 11.1 °C | 24.2 °C | 80.52 mm |
| July | 13.6 °C | 26.5 °C | 72.64 mm |
| August | 13.1 °C | 25.8 °C | 81.79 mm |
| September | 9.2 °C | 21.9 °C | 91.19 mm |
| October | 3.7 °C | 14.2 °C | 103.63 mm |
| November | -0.9 °C | 6.9 °C | 72.39 mm |
| December | -5.4 °C | 0.8 °C | 61.47 mm |
| Annual | 1.9 °C | 12.6 °C | 855.48 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| 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 |