Edgemere, Maryland has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.4 °C (low) to 18.1 °C (high). Annual precipitation averages 1193 Millimeters. Edgemere is located in USDA Plant Hardiness Zone 8a. 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 | -2.3 °C | 5.6 °C | 83.82 mm |
| February | -1.6 °C | 6.8 °C | 71.88 mm |
| March | 2.2 °C | 11.1 °C | 107.19 mm |
| April | 8 °C | 17.5 °C | 91.19 mm |
| May | 13.4 °C | 22.6 °C | 106.93 mm |
| June | 18.7 °C | 27.6 °C | 112.78 mm |
| July | 21.5 °C | 30.1 °C | 111.76 mm |
| August | 20.7 °C | 29.2 °C | 103.38 mm |
| September | 17 °C | 25.7 °C | 117.86 mm |
| October | 10.4 °C | 19.4 °C | 104.9 mm |
| November | 4.7 °C | 13.2 °C | 82.04 mm |
| December | 0.3 °C | 8.1 °C | 99.31 mm |
| Annual | 9.4 °C | 18.1 °C | 1193.04 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 8a : -12.2°C to -9.4°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 |