Eagle Harbor, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 34.8 °F (low) to 48.6 °F (high). Annual precipitation averages 29.6 Inches. Eagle Harbor 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. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 13.5 °F | 24.3 °F | 2.54 in. |
| February | 13.0 °F | 25.9 °F | 1.64 in. |
| March | 19.8 °F | 34.5 °F | 1.57 in. |
| April | 29.8 °F | 43.8 °F | 1.87 in. |
| May | 39.4 °F | 56.6 °F | 2.54 in. |
| June | 47.9 °F | 65.7 °F | 2.88 in. |
| July | 55.7 °F | 71.5 °F | 2.68 in. |
| August | 57.2 °F | 72.1 °F | 2.34 in. |
| September | 51.3 °F | 65.4 °F | 3.13 in. |
| October | 39.8 °F | 52.7 °F | 3.12 in. |
| November | 29.2 °F | 40.1 °F | 2.77 in. |
| December | 20.4 °F | 30.1 °F | 2.48 in. |
| Annual | 34.8 °F | 48.6 °F | 29.56 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 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 |