Hersey, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 34.3 °F (low) to 55.8 °F (high). Annual precipitation averages 36.1 Inches. 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 | 12.6 °F | 28.3 °F | 2.48 in. |
| February | 12.0 °F | 31.3 °F | 1.82 in. |
| March | 19.7 °F | 41.6 °F | 2.24 in. |
| April | 31.2 °F | 55.1 °F | 3.72 in. |
| May | 42.9 °F | 67.6 °F | 3.74 in. |
| June | 52.5 °F | 77.2 °F | 3.6 in. |
| July | 56.0 °F | 81.0 °F | 3.16 in. |
| August | 54.2 °F | 79.2 °F | 3.66 in. |
| September | 46.8 °F | 71.9 °F | 3.13 in. |
| October | 36.5 °F | 58.4 °F | 3.56 in. |
| November | 27.6 °F | 44.5 °F | 2.79 in. |
| December | 19.3 °F | 33.4 °F | 2.15 in. |
| Annual | 34.3 °F | 55.8 °F | 36.05 in. |
| 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 : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |