Hancock, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 34.5 °F (low) to 54.6 °F (high). Annual precipitation averages 34.1 Inches. 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 | 7.0 °F | 24.6 °F | 1.17 in. |
| February | 10.0 °F | 29.3 °F | 1.02 in. |
| March | 20.8 °F | 41.0 °F | 1.84 in. |
| April | 33.2 °F | 55.0 °F | 3.6 in. |
| May | 45.3 °F | 67.8 °F | 4.1 in. |
| June | 55.4 °F | 76.6 °F | 4.53 in. |
| July | 58.9 °F | 80.9 °F | 4.16 in. |
| August | 57.0 °F | 78.7 °F | 4.19 in. |
| September | 49.3 °F | 71.2 °F | 3.45 in. |
| October | 37.4 °F | 57.8 °F | 2.74 in. |
| November | 26.0 °F | 42.6 °F | 1.87 in. |
| December | 14.1 °F | 29.7 °F | 1.46 in. |
| Annual | 34.5 °F | 54.6 °F | 34.13 in. |
| 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 : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |