Matagorda Island Weather Forecast

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    • 90

    Chance Thunderstorms

    • 81
    • 90

    Chance Thunderstorms

    • 81
    • 90

    Slight Chance Thunderstorms

    • 81
    • 90

    Chance Thunderstorms

    • 81
    • 90

    Slight Chance Thunderstorms

    • 80
    • 90

    Mostly Sunny

Today 5 Sep Calhoun Islands

Partly cloudy. A chance of Showers and Thunderstorms, mainly in the morning. Highs in the upper 80s. South Winds around 5 Mph, increasing to southeast in the afternoon. Chance of rain 40 percent.

Tonight 5 Sep Calhoun Islands

Partly cloudy. A chance of Showers with a slight chance of Thunderstorms after midnight. Lows in the lower 80s. South Winds 5 to 10 Mph. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Matagorda Island Temperature Statistics

September Temperature

Rockport Aransas County Airport (19.9 miles)

  • Lowest 1 September, 2026

    77.6 °F

  • Average September

    86.3 °F

  • Highest 1 September, 2026

    94.6 °F

Climate (2021–2026)

Rockport Aransas County Airport (19.9 miles)

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  • Average Low 2021–2026

    67.7 °F

  • Average 2021–2026

    74.8 °F

  • Average High 2021–2026

    82.1 °F
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