Parsonsburg, Maryland has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.1 °C (low) to 19.6 °C (high). Annual precipitation averages 1191.8 Millimeters. Parsonsburg is located in USDA Plant Hardiness Zone 7b. 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 | -2.8 °C | 7.7 °C | 89.66 mm |
| February | -2.3 °C | 9.1 °C | 74.93 mm |
| March | 1.3 °C | 13 °C | 104.14 mm |
| April | 6.7 °C | 19.1 °C | 88.9 mm |
| May | 11.9 °C | 23.8 °C | 92.71 mm |
| June | 17.1 °C | 28.3 °C | 104.39 mm |
| July | 19.8 °C | 30.9 °C | 108.46 mm |
| August | 18.6 °C | 29.7 °C | 130.3 mm |
| September | 15.3 °C | 26.8 °C | 116.33 mm |
| October | 8.7 °C | 20.9 °C | 101.6 mm |
| November | 3.1 °C | 15.1 °C | 85.6 mm |
| December | -0.6 °C | 10.2 °C | 94.74 mm |
| Annual | 8.1 °C | 19.6 °C | 1191.76 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 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 | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |