Illinois River State Park Rainfall Forecast

  • 5%
  • 5%
  • 5%
  • 15%
  • 40%
  • 10%
  • 5%
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  • Rainfall Probability Forecast NOAA

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Illinois River State Park Rainfall Statistics

May Rainfall

Brookings, Brookings Airport (32.3 miles)

  • Total Rainfall May

    0in

  • Daily Average May

    0in

  • Wettest Day 1 May, 2025

    0in

  • Wet Days May

    –

Climate (2010–Present)

Brookings, Brookings Airport (32.3 miles)

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  • Annual Average 2020–2024

    38.3in

  • Monthly Average 2020–2025

    2.8in

  • Daily Average 2020–2025

    0.1in

  • Wettest Day 13 June, 2021

    2.6in
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