Berlin, Maryland has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.9 °C (low) to 19.1 °C (high). Annual precipitation averages 1202.9 Millimeters. Berlin 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 | 7.7 °C | 91.44 mm |
| February | -1.6 °C | 8.8 °C | 79.76 mm |
| March | 1.9 °C | 12.4 °C | 109.73 mm |
| April | 7 °C | 18.1 °C | 88.39 mm |
| May | 12.2 °C | 22.7 °C | 92.96 mm |
| June | 17.6 °C | 27.5 °C | 94.74 mm |
| July | 20.3 °C | 30.3 °C | 108.46 mm |
| August | 19.6 °C | 29.3 °C | 120.65 mm |
| September | 16.8 °C | 26.4 °C | 112.01 mm |
| October | 10.5 °C | 20.9 °C | 112.01 mm |
| November | 4.6 °C | 15.1 °C | 86.36 mm |
| December | 0.3 °C | 10.2 °C | 106.43 mm |
| Annual | 8.9 °C | 19.1 °C | 1202.94 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 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 | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |