Friendship, Maryland has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.4 °C (low) to 19.5 °C (high). Annual precipitation averages 1161 Millimeters. Friendship 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 | -2.2 °C | 7.2 °C | 78.49 mm |
| February | -1.8 °C | 8.7 °C | 68.58 mm |
| March | 1.9 °C | 13.2 °C | 101.85 mm |
| April | 7.6 °C | 19.4 °C | 81.03 mm |
| May | 13.1 °C | 24 °C | 109.22 mm |
| June | 18.4 °C | 28.7 °C | 111.76 mm |
| July | 21.2 °C | 30.9 °C | 114.05 mm |
| August | 20.4 °C | 30.1 °C | 105.92 mm |
| September | 17.1 °C | 26.6 °C | 112.27 mm |
| October | 10.8 °C | 20.6 °C | 103.63 mm |
| November | 5.2 °C | 14.7 °C | 81.28 mm |
| December | 0.6 °C | 9.4 °C | 92.96 mm |
| Annual | 9.4 °C | 19.5 °C | 1161.04 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 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |