Riverton Rainfall Forecast

  • 10%
  • 95%
  • 25%
  • 15%
  • 10%
  • 10%
  • 15%
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  • Rainfall Probability Forecast NOAA

  • Rain Today Real-Time

Riverton Rainfall Statistics

September Rainfall

Portland, Portland International Jetport (3.7 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)

Portland, Portland International Jetport (3.7 miles)

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  • Annual Average 2021–2025

    46.1in

  • Monthly Average 2021–2026

    3.9in

  • Daily Average 2021–2026

    0.1in

  • Wettest Day 14 October, 2022

    2.8in
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