Alto Pass Rainfall Forecast

  • 20%
  • 80%
  • 45%
  • 40%
  • 55%
  • 60%
  • 75%
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Alto Pass Rainfall Statistics

May Rainfall

Southern Illinois Airport (14.9 miles)

  • Total Rainfall May

    2.9in

  • Daily Average May

    0.2in

  • Wettest Day 12 May, 2025

    0.8in

  • Wet Days May

    7/15 (47%)

Climate (2010–Present)

Southern Illinois Airport (14.9 miles)

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  • Annual Average 2020–2024

    38.5in

  • Monthly Average 2020–2025

    3.2in

  • Daily Average 2020–2025

    0.1in

  • Wettest Day 4 September, 2021

    3in
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