Brownsville Weather Forecast

    • 80
    • 95

    Chance Thunderstorms

    • 80
    • 95

    Chance Thunderstorms

    • 80
    • 94

    Chance Thunderstorms

    • 80
    • 95

    Chance Thunderstorms

    • 80
    • 96

    Chance Thunderstorms

    • 80
    • 96

    Chance Thunderstorms

Today 22 Sep Inland Cameron

Sunny. A slight chance of Showers and Thunderstorms in the afternoon. Humid with Highs in the mid 90s. East Winds 10 to 15 Mph. Gusts up to 25 Mph in the afternoon. Chance of rain 20 percent. Heat index Values up to 108.

Tonight 22 Sep Inland Cameron

Mostly clear. Humid with Lows in the upper 70s. East Winds 10 to 15 Mph with Gusts up to 25 Mph, becoming northeast around 5 Mph after midnight.

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Brownsville Temperature Statistics

September Temperature

Brownsville, Brownsville / South Padre Island International Airport (4.3 miles)

  • Lowest 1 September, 2026

    77.6 °F

  • Average September

    90.7 °F

  • Highest 2 September, 2026

    102.7 °F

Climate (2021–2026)

Brownsville, Brownsville / South Padre Island International Airport (4.3 miles)

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  • Average Low 2021–2026

    69.2 °F

  • Average 2021–2026

    77.3 °F

  • Average High 2021–2026

    86.9 °F
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