Coleman, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.5 °C (low) to 12.4 °C (high). Annual precipitation averages 831.1 Millimeters. Coleman is located in USDA Plant Hardiness Zone 5a. 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 | -14.1 °C | -3.6 °C | 36.58 mm |
| February | -13.3 °C | -1.6 °C | 28.96 mm |
| March | -7.6 °C | 4.6 °C | 45.72 mm |
| April | -0.7 °C | 11.8 °C | 77.98 mm |
| May | 5.8 °C | 19.3 °C | 89.41 mm |
| June | 11.4 °C | 24.4 °C | 107.44 mm |
| July | 13.9 °C | 27 °C | 94.74 mm |
| August | 12.9 °C | 25.9 °C | 87.38 mm |
| September | 8.5 °C | 21.7 °C | 89.92 mm |
| October | 2.2 °C | 14.1 °C | 78.23 mm |
| November | -3.6 °C | 6.1 °C | 51.05 mm |
| December | -9.9 °C | -0.8 °C | 43.69 mm |
| Annual | 0.5 °C | 12.4 °C | 831.1 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 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 |