Potomac River - Cobb Point Rainfall Forecast

  • 40%
  • 70%
  • 75%
  • 5%
  • No Rain
  • 5%
  • 30%
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Potomac River - Cobb Point Rainfall Statistics

September Rainfall

St Marys County Airport (16.2 miles)

  • Total Rainfall September

    1.4in

  • Daily Average September

    0.2in

  • Wettest Day 4 September, 2026

    1.4in

  • Wet Days September

    1/11 (9%)

Climate (2021–2025)

St Marys County Airport (16.2 miles)

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  • Annual Average 2021–2025

    41in

  • Monthly Average 2021–2026

    3.3in

  • Daily Average 2021–2026

    0.1in

  • Wettest Day 23 March, 2024

    12.2in
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