Millington, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 37.3 °F (low) to 56.9 °F (high). Annual precipitation averages 33.4 Inches. Millington 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 | 15.0 °F | 29.8 °F | 2.14 in. |
| February | 15.2 °F | 32.7 °F | 1.68 in. |
| March | 23.4 °F | 42.5 °F | 1.89 in. |
| April | 34.3 °F | 55.7 °F | 3.36 in. |
| May | 45.5 °F | 68.3 °F | 3.67 in. |
| June | 55.2 °F | 77.8 °F | 3.4 in. |
| July | 59.3 °F | 81.6 °F | 3.6 in. |
| August | 57.7 °F | 79.6 °F | 3.19 in. |
| September | 49.8 °F | 73.3 °F | 2.87 in. |
| October | 39.6 °F | 60.3 °F | 3.07 in. |
| November | 30.2 °F | 46.5 °F | 2.52 in. |
| December | 22.1 °F | 35.0 °F | 2.03 in. |
| Annual | 37.3 °F | 56.9 °F | 33.42 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |