Wacousta, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 38.5 °F (low) to 57.4 °F (high). Annual precipitation averages 34.9 Inches. Wacousta 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 | 16.0 °F | 29.9 °F | 2.25 in. |
| February | 17.0 °F | 33.2 °F | 1.92 in. |
| March | 25.1 °F | 43.5 °F | 2.17 in. |
| April | 35.4 °F | 56.9 °F | 3.52 in. |
| May | 47.3 °F | 69.2 °F | 3.81 in. |
| June | 57.0 °F | 78.5 °F | 3.7 in. |
| July | 60.4 °F | 82.0 °F | 3.21 in. |
| August | 58.9 °F | 80.0 °F | 3.56 in. |
| September | 51.0 °F | 73.3 °F | 2.83 in. |
| October | 40.3 °F | 60.4 °F | 3.28 in. |
| November | 31.0 °F | 46.7 °F | 2.58 in. |
| December | 22.6 °F | 35.2 °F | 2.09 in. |
| Annual | 38.5 °F | 57.4 °F | 34.92 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 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 |