O'Fallon Rainfall Forecast

  • 5%
  • No Rain
  • 5%
  • 35%
  • 35%
  • 30%
  • 30%
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  • Rainfall Probability Forecast NOAA

  • Rain Today Real-Time

O'Fallon Rainfall Statistics

September Rainfall

Belleville, Scott AFB/MidAmerica Airport (4.3 miles)

  • Total Rainfall September

    0.2in

  • Daily Average September

    0.01in

  • Wettest Day 3 September, 2025

    0.1in

  • Wet Days September

    2/16 (13%)

Climate (2010–Present)

Belleville, Scott AFB/MidAmerica Airport (4.3 miles)

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  • Annual Average 2020–2024

    35.1in

  • Monthly Average 2020–2025

    2.8in

  • Daily Average 2020–2025

    0.1in

  • Wettest Day 11 May, 2022

    6.4in
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