Climate almanac

Poolesville

Maryland, United States · 39.15°, -77.42°

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What is the climate like in Poolesville?

The best time to visit Poolesville is typically October, the year's most comfortable month (6.7/10). Poolesville is warmest in July, when daily highs average 89°F (32°C), and coolest in January, when lows fall to about 29°F (-2°C). The wettest month is typically July and the driest is October; the year sees roughly 45 in (1142 mm) of precipitation.

  • Best time to visitOctober — the year's comfort peak (6.7/10)
  • Warmest monthJuly — average high 89°F (32°C)
  • Coolest monthJanuary — average low 29°F (-2°C)
  • Wettest monthJuly (5.0 in (127 mm))
  • Driest monthOctober (2.9 in (73 mm))
  • Annual precipitation45 in (1142 mm)
  • Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
  • Records fromPurcellville, 25 km away (1900-2026)