Luis Muñoz Marín International Airport Weather Forecast

    • 79
    • 87

    Rain Showers

    • 78
    • 89

    Rain Showers

    • 79
    • 88

    Rain Showers

    • 79
    • 88

    Rain Showers

    • 80
    • 88

    Rain Showers

    • 79
    • 88

    Rain Showers

Today 18 Sep San Juan and Vicinity

Mostly cloudy with isolated Thunderstorms. Scattered Showers late this Morning, then numerous Showers this afternoon. Highs around 91. Temperature falling this afternoon. Southeast Winds 10 to 15 Mph. Chance of rain 70 percent.

Tonight 18 Sep San Juan and Vicinity

Variably cloudy with scattered Showers with isolated Thunderstorms. Lows around 83. Southeast Winds 5 to 10 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Luis Muñoz Marín International Airport Temperature Statistics

September Temperature

San Juan, Luis Munoz Marin International Airport (0.6 miles)

  • Lowest 8 September, 2025

    75.9 °F

  • Average September

    83.2 °F

  • Highest 10 September, 2025

    93 °F

Climate (2020–Present)

San Juan, Luis Munoz Marin International Airport (0.6 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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