Thunder Bay National Marine Sanctuary Rainfall Forecast

  • 5%
  • 10%
  • No Rain
  • 60%
  • 25%
  • 20%
  • 15%
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  • Rainfall Probability Forecast NOAA

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Thunder Bay National Marine Sanctuary Rainfall Statistics

September Rainfall

Alpena, Alpena County Regional Airport (22.4 miles)

  • Total Rainfall September

    0.6in

  • Daily Average September

    0.04in

  • Wettest Day 9 September, 2026

    0.4in

  • Wet Days September

    3/16 (19%)

Climate (2021–2025)

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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