Metamora, Michigan has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.6 °C (low) to 13.6 °C (high). Annual precipitation averages 850.4 Millimeters. Metamora 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 | -9.1 °C | -1.3 °C | 56.39 mm |
| February | -9 °C | 0.2 °C | 46.99 mm |
| March | -4.1 °C | 5.7 °C | 52.32 mm |
| April | 1.8 °C | 13.1 °C | 81.03 mm |
| May | 8.3 °C | 19.7 °C | 94.49 mm |
| June | 13.7 °C | 24.9 °C | 86.11 mm |
| July | 15.8 °C | 27.2 °C | 87.88 mm |
| August | 15.2 °C | 26.1 °C | 80.77 mm |
| September | 11.1 °C | 22.7 °C | 73.91 mm |
| October | 5.1 °C | 15.4 °C | 74.42 mm |
| November | -0.4 °C | 8.2 °C | 62.23 mm |
| December | -5.3 °C | 1.6 °C | 53.85 mm |
| Annual | 3.6 °C | 13.6 °C | 850.39 mm |
| 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 : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |