Norwood, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.4 °C (low) to 11.6 °C (high). Annual precipitation averages 843 Millimeters. Norwood is located in USDA Plant Hardiness Zone 6b. 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 | -7.9 °C | -2.2 °C | 56.9 mm |
| February | -8.5 °C | -1.5 °C | 38.86 mm |
| March | -5.6 °C | 3.2 °C | 46.48 mm |
| April | 0.3 °C | 9.7 °C | 72.14 mm |
| May | 6.2 °C | 16.9 °C | 78.74 mm |
| June | 11.8 °C | 21.8 °C | 74.93 mm |
| July | 15.4 °C | 24.7 °C | 67.82 mm |
| August | 15.6 °C | 24.3 °C | 75.44 mm |
| September | 11.8 °C | 20.9 °C | 90.17 mm |
| October | 5.7 °C | 13.6 °C | 105.66 mm |
| November | 0.6 °C | 6.8 °C | 73.91 mm |
| December | -4.2 °C | 0.9 °C | 61.98 mm |
| Annual | 3.4 °C | 11.6 °C | 843.03 mm |
| 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 6b : -20.6°C to -17.8°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 |