Edgemont, Maryland has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43.3 °F (low) to 62.4 °F (high). Annual precipitation averages 48.2 Inches. Edgemont is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 23.0 °F | 38.3 °F | 3.36 in. |
| February | 24.3 °F | 41.9 °F | 2.6 in. |
| March | 30.8 °F | 50.0 °F | 3.89 in. |
| April | 41.4 °F | 63.1 °F | 4.21 in. |
| May | 50.9 °F | 71.9 °F | 4.98 in. |
| June | 60.0 °F | 80.3 °F | 4.54 in. |
| July | 64.1 °F | 84.4 °F | 4.16 in. |
| August | 62.3 °F | 82.7 °F | 3.87 in. |
| September | 55.6 °F | 76.1 °F | 5.3 in. |
| October | 44.8 °F | 64.7 °F | 4.38 in. |
| November | 35.2 °F | 52.7 °F | 3.37 in. |
| December | 27.6 °F | 42.3 °F | 3.57 in. |
| Annual | 43.3 °F | 62.4 °F | 48.23 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |