Walloon Lake, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 34.5 °F (low) to 54.4 °F (high). Annual precipitation averages 35.1 Inches. 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 | 13.2 °F | 27.2 °F | 2.46 in. |
| February | 11.7 °F | 29.4 °F | 1.61 in. |
| March | 18.5 °F | 39.2 °F | 1.85 in. |
| April | 30.3 °F | 52.2 °F | 2.9 in. |
| May | 41.7 °F | 66.3 °F | 3.07 in. |
| June | 51.4 °F | 75.4 °F | 3.09 in. |
| July | 55.8 °F | 79.5 °F | 2.79 in. |
| August | 55.0 °F | 78.5 °F | 3.34 in. |
| September | 48.1 °F | 71.4 °F | 3.7 in. |
| October | 38.1 °F | 57.5 °F | 4.37 in. |
| November | 29.5 °F | 43.7 °F | 3.16 in. |
| December | 20.7 °F | 32.7 °F | 2.76 in. |
| Annual | 34.5 °F | 54.4 °F | 35.1 in. |
| 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 : -15°F to -10°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 |