Mustang Island Weather Forecast

    • 84
    • 87

    Slight Chance Thunderstorms

    • 84
    • 86

    Mostly Sunny

    • 83
    • 86

    Partly Sunny

    • 84
    • 86

    Partly Sunny

    • 84
    • 86

    Slight Chance Thunderstorms

    • 83
    • 87

    Rain Showers Likely

Today 24 Sep Kleberg Islands

Partly cloudy with a slight chance of Showers and Thunderstorms. Highs in the upper 80s. East Winds 10 to 15 Mph, increasing to 15 to 20 Mph in the afternoon. Chance of rain 20 percent.

Tonight 24 Sep Kleberg Islands

Partly cloudy in the Evening, then clearing. Lows in the lower 80s. East Winds 15 to 20 Mph, Diminishing to 10 to 15 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mustang Island Temperature Statistics

September Temperature

Port Aransas, Mustang Beach Airport (41.6 miles)

  • Lowest 18 September, 2026

    81.9 °F

  • Average September

    86.5 °F

  • Highest 13 September, 2026

    91.6 °F

Climate (2021–2026)

Port Aransas, Mustang Beach Airport (41.6 miles)

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  • Average Low 2021–2026

    69.5 °F

  • Average 2021–2026

    73.9 °F

  • Average High 2021–2026

    78.7 °F
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