Portland Rainfall Forecast

  • 5%
  • 5%
  • 20%
  • 25%
  • 40%
  • 15%
  • 5%
Graph Plots Open in Graphs
  • Rainfall Probability Forecast NOAA

  • Rain Today Real-Time

Portland Rainfall Statistics

August Rainfall

Portland, Portland International Airport (5.6 miles)

  • Total Rainfall August

  • Daily Average August

  • Wettest Day

  • Wet Days August

Climate (2010–Present)

Portland, Portland International Airport (5.6 miles)

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  • Annual Average 2010–Present

    33.3in
  • Monthly Average 2010–Present

    3.1in
  • Daily Average 2010–Present

    0.1in
  • Wettest Day 10 August, 2019

    2.7in
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