Rio Grande Weather Forecast

    • 79
    • 91

    Rain Showers

    • 79
    • 90

    Rain Showers

    • 78
    • 90

    Rain Showers

    • 78
    • 86

    Rain Showers

    • 78
    • 90

    Rain Showers

    • 79
    • 91

    Rain Showers

Today 6 Sep Northeast

Mostly cloudy with scattered Showers with isolated Thunderstorms. Highs around 92. Temperature falling this afternoon. Southeast Winds 10 to 15 Mph. Chance of rain 50 percent.

Tonight 6 Sep Northeast

Isolated Thunderstorms in the evening. Variably cloudy with scattered Showers. Lows around 82. Southeast Winds 5 to 10 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rio Grande Temperature Statistics

September Temperature

San Juan, Luis Munoz Marin International Airport (11.8 miles)

  • Lowest 1 September, 2026

    75.7 °F

  • Average September

    84.7 °F

  • Highest 1 September, 2026

    91.7 °F

Climate (2021–2026)

San Juan, Luis Munoz Marin International Airport (11.8 miles)

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  • Average Low 2021–2026

    77 °F

  • Average 2021–2026

    82.2 °F

  • Average High 2021–2026

    87.8 °F
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