San Juan Island - Friday Harbor Rainfall Forecast

  • No Rain
  • 15%
  • 80%
  • 40%
  • No Rain
  • 10%
  • 30%
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San Juan Island - Friday Harbor Rainfall Statistics

October Rainfall

Friday Harbor Airport (1.9 miles)

  • Total Rainfall October

    0.02 in

  • Daily Average October

    0 in

  • Wettest Day 1 October, 2026

    0.02 in

  • Wet Days October

    1/7 (14%)

Climate (2021–2025)

Friday Harbor Airport (1.9 miles)

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  • Annual Average 2021–2025

    20.6 in

  • Monthly Average 2021–2026

    1.8 in

  • Daily Average 2021–2026

    0.1 in

  • Wettest Day 15 November, 2021

    1.9 in
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