Cloverly, Maryland has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.7 °C (low) to 18.6 °C (high). Annual precipitation averages 1174 Millimeters. Cloverly is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.8 °C | 5.7 °C | 80.52 mm |
| February | -2.9 °C | 7.4 °C | 71.63 mm |
| March | 0.9 °C | 12.2 °C | 103.63 mm |
| April | 6.6 °C | 19.1 °C | 90.17 mm |
| May | 12.2 °C | 23.8 °C | 114.3 mm |
| June | 16.8 °C | 28.3 °C | 116.33 mm |
| July | 19.4 °C | 30.6 °C | 111 mm |
| August | 18.5 °C | 29.6 °C | 95.25 mm |
| September | 14.8 °C | 25.8 °C | 114.05 mm |
| October | 8.3 °C | 19.4 °C | 99.57 mm |
| November | 2.6 °C | 13.4 °C | 81.79 mm |
| December | -1.3 °C | 7.9 °C | 95.76 mm |
| Annual | 7.7 °C | 18.6 °C | 1174 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 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 | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |