San Juan Weather Forecast

    • 80
    • 88

    Rain Showers

    • 80
    • 87

    Rain Showers

    • 80
    • 87

    Rain Showers

    • 80
    • 88

    Rain Showers

    • 81
    • 89

    Rain Showers

    • 81
    • 88

    Rain Showers

Today 6 Sep San Juan and Vicinity

Variably Cloudy, then becoming mostly cloudy early this Afternoon, then becoming variably cloudy. Scattered Showers late this Morning, then numerous Showers with isolated Thunderstorms this afternoon. Highs around 93. East Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 60 percent.

Tonight 6 Sep San Juan and Vicinity

Mostly cloudy with numerous Showers with isolated Thunderstorms. Lows around 83. East Winds 5 to 10 Mph. Chance of rain 70 percent.

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San Juan Temperature Statistics

September Temperature

San Juan Fernando Luis Ribas Dominicci (0.6 miles)

  • Lowest 1 September, 2025

    80.6 °F

  • Average September

    85.8 °F

  • Highest 3 September, 2025

    89.6 °F

Climate (2020–Present)

San Juan Fernando Luis Ribas Dominicci (0.6 miles)

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  • Average Low 2020–2025

    77.6 °F

  • Average 2020–2025

    82.4 °F

  • Average High 2020–2025

    85.1 °F
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