Copper City, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.1 °C (low) to 9.9 °C (high). Annual precipitation averages 820.7 Millimeters. Copper City is located in USDA Plant Hardiness Zone 5b. 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 | -12.8 °C | -5.1 °C | 68.33 mm |
| February | -12.7 °C | -3.6 °C | 40.64 mm |
| March | -8.9 °C | 1.9 °C | 42.42 mm |
| April | -2.2 °C | 7.7 °C | 58.67 mm |
| May | 4.2 °C | 15.5 °C | 74.17 mm |
| June | 9.4 °C | 21.6 °C | 74.42 mm |
| July | 12.8 °C | 24 °C | 79.5 mm |
| August | 12.4 °C | 23.5 °C | 69.85 mm |
| September | 8.6 °C | 19.3 °C | 85.09 mm |
| October | 2.6 °C | 11.6 °C | 88.14 mm |
| November | -3.2 °C | 3.8 °C | 67.31 mm |
| December | -8.7 °C | -1.9 °C | 72.14 mm |
| Annual | 0.1 °C | 9.9 °C | 820.68 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 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |