New Troy, Michigan has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41 °F (low) to 58.1 °F (high). Annual precipitation averages 40.2 Inches. 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 | 18.6 °F | 31.7 °F | 2.84 in. |
| February | 20.4 °F | 34.8 °F | 2.26 in. |
| March | 28.0 °F | 45.0 °F | 2.36 in. |
| April | 38.2 °F | 57.0 °F | 3.52 in. |
| May | 49.0 °F | 68.2 °F | 3.92 in. |
| June | 58.0 °F | 77.8 °F | 4.22 in. |
| July | 62.7 °F | 81.8 °F | 3.82 in. |
| August | 61.6 °F | 80.1 °F | 4.21 in. |
| September | 54.1 °F | 74.2 °F | 3.41 in. |
| October | 43.0 °F | 61.8 °F | 4.24 in. |
| November | 33.4 °F | 48.1 °F | 2.88 in. |
| December | 24.7 °F | 36.9 °F | 2.51 in. |
| Annual | 41 °F | 58.1 °F | 40.19 in. |
| 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 : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |