Manchester, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 38.2 °F (low) to 58.8 °F (high). Annual precipitation averages 34.5 Inches. Manchester 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.7 °F | 31.6 °F | 2.28 in. |
| February | 16.6 °F | 34.7 °F | 1.94 in. |
| March | 24.9 °F | 44.9 °F | 2.42 in. |
| April | 35.7 °F | 58.3 °F | 3.36 in. |
| May | 46.9 °F | 70.2 °F | 3.91 in. |
| June | 56.4 °F | 79.4 °F | 3.35 in. |
| July | 60.2 °F | 83.2 °F | 3.23 in. |
| August | 58.8 °F | 81.4 °F | 3.37 in. |
| September | 51.0 °F | 75.1 °F | 2.95 in. |
| October | 39.9 °F | 62.1 °F | 2.82 in. |
| November | 30.2 °F | 48.1 °F | 2.67 in. |
| December | 22.0 °F | 36.5 °F | 2.19 in. |
| Annual | 38.2 °F | 58.8 °F | 34.49 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| 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 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |