New Troy, Michigan has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5 °C (low) to 14.5 °C (high). Annual precipitation averages 1020.8 Millimeters. New Troy 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.4 °C | -0.2 °C | 72.14 mm |
| February | -6.4 °C | 1.6 °C | 57.4 mm |
| March | -2.2 °C | 7.2 °C | 59.94 mm |
| April | 3.4 °C | 13.9 °C | 89.41 mm |
| May | 9.4 °C | 20.1 °C | 99.57 mm |
| June | 14.4 °C | 25.4 °C | 107.19 mm |
| July | 17.1 °C | 27.7 °C | 97.03 mm |
| August | 16.4 °C | 26.7 °C | 106.93 mm |
| September | 12.3 °C | 23.4 °C | 86.61 mm |
| October | 6.1 °C | 16.6 °C | 107.7 mm |
| November | 0.8 °C | 8.9 °C | 73.15 mm |
| December | -4.1 °C | 2.7 °C | 63.75 mm |
| Annual | 5 °C | 14.5 °C | 1020.82 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 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 |