Hancock, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.2 °C (low) to 10.8 °C (high). Annual precipitation averages 882.1 Millimeters. Hancock 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 | -12.7 °C | -4.4 °C | 92.96 mm |
| February | -13.4 °C | -2.9 °C | 40.89 mm |
| March | -9.1 °C | 2.6 °C | 41.66 mm |
| April | -2.5 °C | 8.7 °C | 64.77 mm |
| May | 3.7 °C | 16.8 °C | 83.82 mm |
| June | 8.9 °C | 22.4 °C | 74.93 mm |
| July | 12.6 °C | 25.3 °C | 73.91 mm |
| August | 12.1 °C | 24.7 °C | 68.58 mm |
| September | 8.4 °C | 20.3 °C | 86.61 mm |
| October | 2.2 °C | 12.4 °C | 90.42 mm |
| November | -3.2 °C | 4.5 °C | 68.58 mm |
| December | -8.9 °C | -1.4 °C | 95 mm |
| Annual | -0.2 °C | 10.8 °C | 882.13 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 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |