Mount St Helens Rainfall Forecast

  • 60%
  • 75%
  • 10%
  • 85%
  • 95%
  • 95%
  • 100%
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  • Rainfall Probability Forecast NOAA

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Mount St Helens Rainfall Statistics

December Rainfall

Southwest Washington Regional Airport (33.6 miles)

  • Total Rainfall December

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  • Daily Average December

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  • Wettest Day 2 December, 2025

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  • Wet Days December

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Climate (2010–Present)

Southwest Washington Regional Airport (33.6 miles)

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  • Annual Average 2020–2024

    39.1in

  • Monthly Average 2020–2025

    3.2in

  • Daily Average 2020–2025

    0.1in

  • Wettest Day 4 November, 2022

    4.2in
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