Grand Portland Rainfall Forecast

  • 15%
  • No Rain
  • No Rain
  • 5%
  • 15%
  • 20%
  • 30%
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  • Rainfall Probability Forecast NOAA

  • Rain Today Real-Time

Grand Portland Rainfall Statistics

May Rainfall

Oklahoma City, Wiley Post Airport (4.3 miles)

  • Total Rainfall May

    0.2in

  • Daily Average May

    0.03in

  • Wettest Day 8 May, 2026

    0.2in

  • Wet Days May

    2/11 (18%)

Climate (2010–Present)

Oklahoma City, Wiley Post Airport (4.3 miles)

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  • Annual Average 2021–2025

    28.4in

  • Monthly Average 2021–2026

    2.4in

  • Daily Average 2021–2026

    0.1in

  • Wettest Day 27 June, 2021

    3.7in
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