Ponshewaing, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 34.1 °F (low) to 53.7 °F (high). Annual precipitation averages 34.1 Inches. Ponshewaing 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 Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 12.1 °F | 27.2 °F | 2.38 in. |
| February | 10.4 °F | 29.3 °F | 1.56 in. |
| March | 17.6 °F | 38.9 °F | 1.83 in. |
| April | 30.0 °F | 50.8 °F | 2.87 in. |
| May | 41.5 °F | 64.7 °F | 2.95 in. |
| June | 51.3 °F | 74.2 °F | 2.91 in. |
| July | 56.0 °F | 78.3 °F | 2.77 in. |
| August | 54.8 °F | 77.3 °F | 3.19 in. |
| September | 47.7 °F | 70.3 °F | 3.56 in. |
| October | 38.0 °F | 56.8 °F | 4.28 in. |
| November | 29.3 °F | 43.7 °F | 3.08 in. |
| December | 20.5 °F | 33.1 °F | 2.7 in. |
| Annual | 34.1 °F | 53.7 °F | 34.08 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |