Willamette River - Portland Morrison Street Bridge Rainfall Forecast

  • 100%
  • 20%
  • No Rain
  • 70%
  • 35%
  • 20%
  • 15%
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  • Rainfall Probability Forecast NOAA

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Willamette River - Portland Morrison Street Bridge Rainfall Statistics

December Rainfall

Portland, Portland International Airport (5.6 miles)

  • Total Rainfall December

    5.6in
  • Daily Average December

    0.7in
  • Wettest Day 6 December, 2023

    1.7in
  • Wet Days December

    7/10 (70%)

Climate (2010–Present)

Portland, Portland International Airport (5.6 miles)

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  • Annual Average 2018–2022

    34.1in
  • Monthly Average 2018–2023

    2.8in
  • Daily Average 2018–2023

    0.1in
  • Wettest Day 26 December, 2022

    2.1in
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