Ellsworth, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.9 °C (low) to 12 °C (high). Annual precipitation averages 851.1 Millimeters. Ellsworth 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 | -9.8 °C | -2.6 °C | 54.61 mm |
| February | -10.7 °C | -1.7 °C | 35.81 mm |
| March | -7 °C | 3.6 °C | 43.18 mm |
| April | -0.6 °C | 10.7 °C | 69.09 mm |
| May | 5.7 °C | 18.2 °C | 75.69 mm |
| June | 11.2 °C | 23.3 °C | 78.23 mm |
| July | 13.7 °C | 25.7 °C | 71.63 mm |
| August | 13.3 °C | 25.2 °C | 82.04 mm |
| September | 9.3 °C | 21.3 °C | 93.47 mm |
| October | 3.8 °C | 13.7 °C | 107.95 mm |
| November | -1 °C | 6.5 °C | 73.91 mm |
| December | -5.7 °C | 0.5 °C | 65.53 mm |
| Annual | 1.9 °C | 12 °C | 851.14 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 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 |