Free Soil, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36.7 °F (low) to 55.3 °F (high). Annual precipitation averages 35.7 Inches. Free Soil 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 | 16.2 °F | 29.2 °F | 2.37 in. |
| February | 16.3 °F | 31.7 °F | 1.75 in. |
| March | 22.3 °F | 40.7 °F | 2.17 in. |
| April | 32.9 °F | 53.9 °F | 3.39 in. |
| May | 43.9 °F | 66.6 °F | 3.46 in. |
| June | 53.4 °F | 75.8 °F | 3.46 in. |
| July | 57.9 °F | 79.2 °F | 3.03 in. |
| August | 56.4 °F | 78.0 °F | 3.21 in. |
| September | 49.3 °F | 71.3 °F | 3.15 in. |
| October | 39.0 °F | 58.4 °F | 3.95 in. |
| November | 30.4 °F | 44.7 °F | 3.13 in. |
| December | 22.4 °F | 34.1 °F | 2.58 in. |
| Annual | 36.7 °F | 55.3 °F | 35.65 in. |
| 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 : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |