Columbia River - Cooper Island Rainfall Forecast

  • 25%
  • 10%
  • No Rain
  • 5%
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  • 50%
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Columbia River - Cooper Island Rainfall Statistics

January Rainfall

Southwest Washington Regional Airport (16.8 miles)

  • Total Rainfall January

    2.9in

  • Daily Average January

    0.1in

  • Wettest Day 7 January, 2026

    0.9in

  • Wet Days January

    11/22 (50%)

Climate (2010–Present)

Southwest Washington Regional Airport (16.8 miles)

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  • Annual Average 2021–2025

    39.7in

  • Monthly Average 2021–2025

    3.3in

  • Daily Average 2021–2026

    0.1in

  • Wettest Day 4 November, 2022

    4.2in
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