Lake Superior Rainfall Forecast

  • 30%
  • No Rain
  • 10%
  • 35%
  • 45%
  • 25%
  • 30%
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  • Rainfall Probability Forecast NOAA

  • Rain Today Real-Time

Lake Superior Rainfall Statistics

September Rainfall

Grand Marais, The Bay of Grand Marais (28 miles)

  • Total Rainfall September

    2.6in

  • Daily Average September

    0.2in

  • Wettest Day 12 September, 2025

    1.2in

  • Wet Days September

    8/17 (47%)

Climate (2010–Present)

Grand Marais, The Bay of Grand Marais (28 miles)

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  • Annual Average 2020–2024

    25.3in

  • Monthly Average 2020–2025

    2.2in

  • Daily Average 2020–2025

    0.1in

  • Wettest Day 11 November, 2021

    3.4in
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