Arroyo Weather Forecast

    • 79
    • 88

    Rain Showers

    • 77
    • 87

    Rain Showers

    • 77
    • 85

    Rain Showers

    • 79
    • 89

    Rain Showers

    • 79
    • 88

    Rain Showers

    • 79
    • 86

    Rain Showers

Today 21 Aug Southeast

Partly cloudy with isolated Showers. Hazy. Highs around 92. Temperature falling in the afternoon. East Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 20 percent.

Tonight 21 Aug Southeast

Partly cloudy in the Evening, then becoming clear. Isolated Showers. Hazy. Lows around 82. Northeast Winds 10 to 15 Mph. Chance of rain less than 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Arroyo Temperature Statistics

August Temperature

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

  • Lowest 17 August, 2025

    76.6 °F
  • Average August

    84.5 °F
  • Highest 3 August, 2025

    93.7 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    76.9 °F
  • Average 2020–2025

    81.9 °F
  • Average High 2020–2025

    87.5 °F
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