Walloon Lake, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.4 °C (low) to 12.5 °C (high). Annual precipitation averages 891.5 Millimeters. Walloon Lake 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 | -10.4 °C | -2.7 °C | 62.48 mm |
| February | -11.3 °C | -1.4 °C | 40.89 mm |
| March | -7.5 °C | 4 °C | 46.99 mm |
| April | -0.9 °C | 11.2 °C | 73.66 mm |
| May | 5.4 °C | 19.1 °C | 77.98 mm |
| June | 10.8 °C | 24.1 °C | 78.49 mm |
| July | 13.2 °C | 26.4 °C | 70.87 mm |
| August | 12.8 °C | 25.8 °C | 84.84 mm |
| September | 8.9 °C | 21.9 °C | 93.98 mm |
| October | 3.4 °C | 14.2 °C | 111 mm |
| November | -1.4 °C | 6.5 °C | 80.26 mm |
| December | -6.3 °C | 0.4 °C | 70.1 mm |
| Annual | 1.4 °C | 12.5 °C | 891.54 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 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 |