Portland Rainfall Forecast

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  • 5%
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  • Rainfall Probability Forecast NOAA

  • Rain Today Real-Time

Portland Rainfall Statistics

September Rainfall

Meriden, Meriden Markham Municipal Airport (10.6 miles)

  • Total Rainfall September

    1.7in

  • Daily Average September

    0.1in

  • Wettest Day 6 September, 2025

    0.6in

  • Wet Days September

    3/15 (20%)

Climate (2010–Present)

Meriden, Meriden Markham Municipal Airport (10.6 miles)

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  • Annual Average 2020–2024

    50.5in

  • Monthly Average 2020–2025

    4.2in

  • Daily Average 2020–2025

    0.1in

  • Wettest Day 1 September, 2021

    4.5in
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