Saco River - Thunder Island Rainfall Forecast

  • 5%
  • No Rain
  • 35%
  • 40%
  • 35%
  • 40%
  • 5%
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Saco River - Thunder Island Rainfall Statistics

September Rainfall

Portland, Portland International Jetport (12.4 miles)

  • Total Rainfall September

    3.7in

  • Daily Average September

    0.1in

  • Wettest Day 27 September, 2026

    1.6in

  • Wet Days September

    12/30 (40%)

Climate (2021–2025)

Portland, Portland International Jetport (12.4 miles)

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  • Annual Average 2021–2025

    46.1in

  • Monthly Average 2021–2026

    3.9in

  • Daily Average 2021–2026

    0.1in

  • Wettest Day 14 October, 2022

    2.8in
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