Lake Leelanau, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 37.4 °F (low) to 53.9 °F (high). Annual precipitation averages 33.6 Inches. Lake Leelanau is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.7 °F | 27.8 °F | 2.45 in. |
| February | 15.7 °F | 29.6 °F | 1.63 in. |
| March | 22.1 °F | 38.9 °F | 1.98 in. |
| April | 32.4 °F | 51.2 °F | 3.07 in. |
| May | 43.4 °F | 64.3 °F | 3.09 in. |
| June | 53.5 °F | 74.1 °F | 3.21 in. |
| July | 58.9 °F | 78.5 °F | 2.72 in. |
| August | 58.4 °F | 77.3 °F | 2.87 in. |
| September | 51.6 °F | 70.5 °F | 3.47 in. |
| October | 41.0 °F | 57.0 °F | 3.88 in. |
| November | 32.0 °F | 44.5 °F | 2.87 in. |
| December | 23.3 °F | 33.6 °F | 2.39 in. |
| Annual | 37.4 °F | 53.9 °F | 33.63 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |