Ossineke, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36 °F (low) to 52.8 °F (high). Annual precipitation averages 30.8 Inches. Ossineke is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 13.5 °F | 27.6 °F | 1.83 in. |
| February | 13.0 °F | 29.4 °F | 1.42 in. |
| March | 20.4 °F | 37.6 °F | 1.73 in. |
| April | 31.7 °F | 48.9 °F | 2.89 in. |
| May | 42.8 °F | 61.8 °F | 3.18 in. |
| June | 52.7 °F | 71.9 °F | 3.12 in. |
| July | 58.4 °F | 77.4 °F | 3.14 in. |
| August | 57.5 °F | 76.2 °F | 3.22 in. |
| September | 50.8 °F | 69.2 °F | 2.85 in. |
| October | 39.8 °F | 56.3 °F | 3.24 in. |
| November | 30.1 °F | 44.0 °F | 2.11 in. |
| December | 21.0 °F | 33.5 °F | 2.02 in. |
| Annual | 36 °F | 52.8 °F | 30.75 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |