Irmo Rainfall Forecast

  • 10%
  • No Rain
  • 5%
  • 30%
  • 40%
  • 35%
  • 15%
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Irmo Rainfall Statistics

September Rainfall

Columbia, Columbia Metropolitan Airport (10.6 miles)

  • Total Rainfall September

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  • Daily Average September

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  • Wettest Day 2 September, 2026

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  • Wet Days September

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Climate (2021–2025)

Columbia, Columbia Metropolitan Airport (10.6 miles)

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  • Annual Average 2021–2025

    47.7in

  • Monthly Average 2021–2026

    3.7in

  • Daily Average 2021–2026

    0.1in

  • Wettest Day 22 July, 2025

    4.3in
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