Arroyo Rainfall Forecast

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  • 50%
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  • 70%
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  • 40%
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  • Rainfall Probability Forecast NOAA

  • Rain Today Real-Time

Arroyo Rainfall Statistics

January Rainfall

San Juan, Luis Munoz Marin International Airport (33.6 miles)

  • Total Rainfall January

    1.6in

  • Daily Average January

    0.1in

  • Wettest Day 23 January, 2026

    0.3in

  • Wet Days January

    14/29 (48%)

Climate (2010–Present)

San Juan, Luis Munoz Marin International Airport (33.6 miles)

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  • Annual Average 2021–2025

    64.3in

  • Monthly Average 2021–2025

    5.4in

  • Daily Average 2021–2026

    0.2in

  • Wettest Day 27 October, 2023

    5.2in
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