San Juan Weather Forecast

    • 74
    • 84

    Rain Showers

    • 74
    • 84

    Rain Showers

    • 74
    • 84

    Rain Showers

    • 74
    • 84

    Rain Showers

    • 75
    • 85

    Rain Showers

    • 76
    • 84

    Mostly Sunny

Today 22 Jan San Juan and Vicinity

Variably cloudy late this Morning, then becoming mostly cloudy. Scattered Showers late this Morning, then numerous Showers with isolated Thunderstorms this afternoon. Highs around 86. Temperature falling this afternoon. East Winds 15 to 20 Mph. Chance of rain 70 percent.

Tonight 22 Jan San Juan and Vicinity

Variably cloudy with scattered Showers. Lows around 80. East Winds 10 to 15 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Juan Temperature Statistics

January Temperature

San Juan Fernando Luis Ribas Dominicci (0.6 miles)

  • Lowest 3 January, 2026

    71.6 °F

  • Average January

    80.4 °F

  • Highest 4 January, 2026

    87.8 °F

Climate (2021–Present)

San Juan Fernando Luis Ribas Dominicci (0.6 miles)

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  • Average Low 2021–2026

    77.7 °F

  • Average 2021–2026

    82.5 °F

  • Average High 2021–2026

    85.2 °F
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