Pleasant Grove, Maryland has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.5 °C (low) to 17.9 °C (high). Annual precipitation averages 1024.6 Millimeters. Pleasant Grove 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.1 °C | 4.2 °C | 69.09 mm |
| February | -4.4 °C | 6.3 °C | 64.26 mm |
| March | -0.8 °C | 11.2 °C | 89.41 mm |
| April | 4.4 °C | 18.7 °C | 90.17 mm |
| May | 9.7 °C | 23.6 °C | 112.27 mm |
| June | 14.6 °C | 27.8 °C | 106.93 mm |
| July | 16.8 °C | 30.3 °C | 91.69 mm |
| August | 15.8 °C | 29.4 °C | 82.8 mm |
| September | 12 °C | 25.8 °C | 96.52 mm |
| October | 5.8 °C | 19.2 °C | 74.68 mm |
| November | 0.6 °C | 12.3 °C | 68.58 mm |
| December | -2.9 °C | 6.5 °C | 78.23 mm |
| Annual | 5.5 °C | 17.9 °C | 1024.63 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |