Eagle Harbor, Maryland has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.3 °C (low) to 19.4 °C (high). Annual precipitation averages 1171.2 Millimeters. Eagle Harbor is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -2.7 °C | 7.2 °C | 79.5 mm |
| February | -2.3 °C | 8.9 °C | 70.36 mm |
| March | 1.4 °C | 13.4 °C | 99.31 mm |
| April | 7.2 °C | 19.8 °C | 81.79 mm |
| May | 12.6 °C | 24.1 °C | 109.47 mm |
| June | 17.4 °C | 28.5 °C | 109.73 mm |
| July | 20 °C | 30.8 °C | 112.78 mm |
| August | 19.1 °C | 29.8 °C | 112.52 mm |
| September | 15.4 °C | 26.4 °C | 115.82 mm |
| October | 8.9 °C | 20.3 °C | 103.38 mm |
| November | 3.3 °C | 14.2 °C | 80.77 mm |
| December | -0.6 °C | 9.4 °C | 95.76 mm |
| Annual | 8.3 °C | 19.4 °C | 1171.19 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |