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Climate almanac

Poolesville

Maryland, United States · 39.15°, -77.42°

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What is the weather like in Poolesville in September?

In September, Poolesville is typically 79°F (26°C) during the day and 62°F (17°C) at night. The month brings about 4.3 in (109 mm) of precipitation in total.

  • Average high79°F (26°C)
  • Average low62°F (17°C)
  • Precipitation4.3 in (109 mm)
  • Clear or mostly clear days10
  • Based on2016-2025 daily ERA5 reanalysis data (10-year normals)