Leland, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 38.4 °F (low) to 53.5 °F (high). Annual precipitation averages 32.4 Inches. Leland is located in USDA Plant Hardiness Zone 6b. 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 | 18.2 °F | 28.1 °F | 2.49 in. |
| February | 17.5 °F | 29.6 °F | 1.57 in. |
| March | 22.9 °F | 38.3 °F | 1.9 in. |
| April | 32.6 °F | 50.2 °F | 2.88 in. |
| May | 42.7 °F | 63.0 °F | 2.99 in. |
| June | 53.0 °F | 73.1 °F | 3.02 in. |
| July | 59.8 °F | 77.8 °F | 2.7 in. |
| August | 60.0 °F | 76.8 °F | 2.75 in. |
| September | 53.7 °F | 70.0 °F | 3.39 in. |
| October | 42.8 °F | 56.8 °F | 3.78 in. |
| November | 33.4 °F | 44.4 °F | 2.72 in. |
| December | 24.7 °F | 33.9 °F | 2.24 in. |
| Annual | 38.4 °F | 53.5 °F | 32.43 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 6b : -5°F to 0°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 |