Quincy, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 39.1 °F (low) to 57.6 °F (high). Annual precipitation averages 38.4 Inches. Quincy is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.5 °F | 30.6 °F | 2.5 in. |
| February | 17.6 °F | 33.5 °F | 2.16 in. |
| March | 25.6 °F | 44.0 °F | 2.38 in. |
| April | 36.6 °F | 57.3 °F | 3.44 in. |
| May | 48.5 °F | 68.8 °F | 4.14 in. |
| June | 58.1 °F | 78.2 °F | 3.93 in. |
| July | 61.1 °F | 81.8 °F | 3.81 in. |
| August | 59.2 °F | 79.6 °F | 4.08 in. |
| September | 51.8 °F | 73.7 °F | 3.39 in. |
| October | 41.0 °F | 60.8 °F | 3.43 in. |
| November | 31.0 °F | 47.2 °F | 2.81 in. |
| December | 22.6 °F | 35.3 °F | 2.32 in. |
| Annual | 39.1 °F | 57.6 °F | 38.39 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |