Bangor, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4.3 °C (low) to 14.5 °C (high). Annual precipitation averages 1011.2 Millimeters. Bangor is located in USDA Plant Hardiness Zone 6a. 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 | -7.7 °C | -0.2 °C | 75.95 mm |
| February | -7 °C | 1.3 °C | 56.39 mm |
| March | -3.1 °C | 6.9 °C | 60.45 mm |
| April | 2.7 °C | 13.9 °C | 89.41 mm |
| May | 8.9 °C | 20.3 °C | 103.63 mm |
| June | 13.3 °C | 25.6 °C | 98.55 mm |
| July | 16.2 °C | 27.9 °C | 89.66 mm |
| August | 15.5 °C | 27.1 °C | 99.06 mm |
| September | 11.2 °C | 23.6 °C | 86.61 mm |
| October | 5.2 °C | 16.2 °C | 103.63 mm |
| November | 0.3 °C | 8.9 °C | 77.98 mm |
| December | -4.2 °C | 2.6 °C | 69.85 mm |
| Annual | 4.3 °C | 14.5 °C | 1011.17 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |