Au Gres, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.4 °C (low) to 13.1 °C (high). Annual precipitation averages 792 Millimeters. Au Gres 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 | -9.4 °C | -1.4 °C | 42.93 mm |
| February | -9.4 °C | -0.1 °C | 38.1 mm |
| March | -5.1 °C | 4.8 °C | 44.2 mm |
| April | 1 °C | 11.6 °C | 83.57 mm |
| May | 7.6 °C | 18.7 °C | 83.57 mm |
| June | 13.3 °C | 24.1 °C | 83.57 mm |
| July | 15.9 °C | 26.7 °C | 75.69 mm |
| August | 15.3 °C | 25.8 °C | 84.07 mm |
| September | 11.4 °C | 22.1 °C | 70.61 mm |
| October | 5.4 °C | 15.1 °C | 76.71 mm |
| November | -0.1 °C | 7.7 °C | 59.69 mm |
| December | -5.2 °C | 1.6 °C | 49.28 mm |
| Annual | 3.4 °C | 13.1 °C | 791.99 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 6a : -23.3°C to -20.6°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 |