Mears, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.1 °C (low) to 12.7 °C (high). Annual precipitation averages 958.6 Millimeters. Mears is located in USDA Plant Hardiness Zone 6a. 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 | -8.3 °C | -1.6 °C | 71.88 mm |
| February | -8.1 °C | -0.2 °C | 57.4 mm |
| March | -4.8 °C | 5.1 °C | 55.63 mm |
| April | 1.1 °C | 11.6 °C | 89.92 mm |
| May | 7.1 °C | 18.3 °C | 93.47 mm |
| June | 12.3 °C | 23.7 °C | 86.87 mm |
| July | 14.8 °C | 25.7 °C | 88.65 mm |
| August | 14.2 °C | 25 °C | 88.14 mm |
| September | 10.1 °C | 21.5 °C | 82.3 mm |
| October | 4.5 °C | 14.3 °C | 101.35 mm |
| November | -0.4 °C | 7.2 °C | 78.99 mm |
| December | -5 °C | 1.2 °C | 64.01 mm |
| Annual | 3.1 °C | 12.7 °C | 958.61 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| 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 |