Thunder Bay National Marine Sanctuary Rainfall Forecast

  • 20%
  • 5%
  • 20%
  • 30%
  • 45%
  • 30%
  • 20%
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  • Rainfall Probability Forecast NOAA

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Thunder Bay National Marine Sanctuary Rainfall Statistics

May Rainfall

Alpena, Alpena County Regional Airport (22.4 miles)

  • Total Rainfall May

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  • Daily Average May

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  • Wettest Day 1 May, 2026

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  • Wet Days May

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Climate (2010–Present)

Alpena, Alpena County Regional Airport (22.4 miles)

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  • Annual Average 2021–2025

    30.2in

  • Monthly Average 2021–2026

    2.7in

  • Daily Average 2021–2026

    0.1in

  • Wettest Day 29 December, 2025

    4.2in
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