Rapid City Rainfall Forecast

  • 10%
  • 45%
  • 40%
  • 35%
  • 25%
  • 20%
  • 15%
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  • Rainfall Probability Forecast NOAA

  • Rain Today Real-Time

Rapid City Rainfall Statistics

May Rainfall

Ellsworth Air Force Base (8.1 miles)

  • Total Rainfall May

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  • Daily Average May

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  • Wettest Day 2 May, 2026

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  • Wet Days May

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Climate (2010–Present)

Ellsworth Air Force Base (8.1 miles)

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  • Annual Average 2021–2025

    14.3in

  • Monthly Average 2021–2026

    1.1in

  • Daily Average 2021–2026

    0.04in

  • Wettest Day 6 August, 2021

    5.1in
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