Coleman, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36.5 °F (low) to 56.8 °F (high). Annual precipitation averages 33 Inches. Coleman is located in USDA Plant Hardiness Zone 6a. 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 | 14.3 °F | 29.3 °F | 2.03 in. |
| February | 14.4 °F | 32.1 °F | 1.57 in. |
| March | 22.3 °F | 42.3 °F | 1.95 in. |
| April | 33.4 °F | 55.7 °F | 3.35 in. |
| May | 45.4 °F | 68.7 °F | 3.61 in. |
| June | 55.2 °F | 77.9 °F | 3.61 in. |
| July | 58.8 °F | 82.0 °F | 2.97 in. |
| August | 56.8 °F | 80.0 °F | 3.46 in. |
| September | 48.7 °F | 73.0 °F | 2.74 in. |
| October | 38.5 °F | 59.4 °F | 3.25 in. |
| November | 29.5 °F | 46.0 °F | 2.51 in. |
| December | 21.1 °F | 34.7 °F | 1.97 in. |
| Annual | 36.5 °F | 56.8 °F | 33.02 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 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |