Trufant, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.6 °C (low) to 13.5 °C (high). Annual precipitation averages 927.1 Millimeters. Trufant is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.6 °C | -1.7 °C | 59.44 mm |
| February | -9.7 °C | -0.2 °C | 48.77 mm |
| March | -5.3 °C | 5.7 °C | 58.17 mm |
| April | 1 °C | 13.2 °C | 94.74 mm |
| May | 7.3 °C | 19.8 °C | 102.11 mm |
| June | 12.7 °C | 25.1 °C | 91.69 mm |
| July | 14.7 °C | 27.2 °C | 83.06 mm |
| August | 13.8 °C | 26.3 °C | 90.42 mm |
| September | 9.7 °C | 22.6 °C | 76.45 mm |
| October | 3.6 °C | 15.1 °C | 89.92 mm |
| November | -1.5 °C | 7.4 °C | 73.91 mm |
| December | -6 °C | 1.1 °C | 58.42 mm |
| Annual | 2.6 °C | 13.5 °C | 927.1 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°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 |