Hersey, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.3 °C (low) to 13.2 °C (high). Annual precipitation averages 915.7 Millimeters. Hersey is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.8 °C | -2.1 °C | 62.99 mm |
| February | -11.1 °C | -0.4 °C | 46.23 mm |
| March | -6.8 °C | 5.3 °C | 56.9 mm |
| April | -0.4 °C | 12.8 °C | 94.49 mm |
| May | 6.1 °C | 19.8 °C | 95 mm |
| June | 11.4 °C | 25.1 °C | 91.44 mm |
| July | 13.3 °C | 27.2 °C | 80.26 mm |
| August | 12.3 °C | 26.2 °C | 92.96 mm |
| September | 8.2 °C | 22.2 °C | 79.5 mm |
| October | 2.5 °C | 14.7 °C | 90.42 mm |
| November | -2.4 °C | 6.9 °C | 70.87 mm |
| December | -7.1 °C | 0.8 °C | 54.61 mm |
| Annual | 1.3 °C | 13.2 °C | 915.67 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |