Delaware River - Port Penn Rainfall Forecast

  • 35%
  • No Rain
  • 5%
  • 10%
  • 5%
  • 5%
  • 15%
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Delaware River - Port Penn Rainfall Statistics

September Rainfall

Wilmington, New Castle County Airport (10.6 miles)

  • Total Rainfall September

    0.6in

  • Daily Average September

    0.04in

  • Wettest Day 7 September, 2025

    0.5in

  • Wet Days September

    4/18 (22%)

Climate (2010–Present)

Wilmington, New Castle County Airport (10.6 miles)

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  • Annual Average 2020–2024

    45.4in

  • Monthly Average 2020–2025

    3.7in

  • Daily Average 2020–2025

    0.1in

  • Wettest Day 12 June, 2023

    3.6in
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