Glenn Rainfall Forecast

  • 5%
  • 15%
  • 20%
  • 40%
  • 55%
  • 40%
  • 25%
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  • Rainfall Probability Forecast NOAA

  • Rain Today Real-Time

Glenn Rainfall Statistics

September Rainfall

Southern Illinois Airport (18 miles)

  • Total Rainfall September

    0.1in

  • Daily Average September

    0.01in

  • Wettest Day 14 September, 2025

    0.1in

  • Wet Days September

    3/18 (17%)

Climate (2010–Present)

Southern Illinois Airport (18 miles)

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  • Annual Average 2020–2024

    38.5in

  • Monthly Average 2020–2025

    3.1in

  • Daily Average 2020–2025

    0.1in

  • Wettest Day 4 September, 2021

    3in
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