Hancock, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.4 °C (low) to 12.6 °C (high). Annual precipitation averages 866.9 Millimeters. Hancock is located in USDA Plant Hardiness Zone 5a. 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 | -13.9 °C | -4.1 °C | 29.72 mm |
| February | -12.2 °C | -1.5 °C | 25.91 mm |
| March | -6.2 °C | 5 °C | 46.74 mm |
| April | 0.7 °C | 12.8 °C | 91.44 mm |
| May | 7.4 °C | 19.9 °C | 104.14 mm |
| June | 13 °C | 24.8 °C | 115.06 mm |
| July | 14.9 °C | 27.2 °C | 105.66 mm |
| August | 13.9 °C | 25.9 °C | 106.43 mm |
| September | 9.6 °C | 21.8 °C | 87.63 mm |
| October | 3 °C | 14.3 °C | 69.6 mm |
| November | -3.3 °C | 5.9 °C | 47.5 mm |
| December | -9.9 °C | -1.3 °C | 37.08 mm |
| Annual | 1.4 °C | 12.6 °C | 866.91 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |