Matagorda Island Weather Forecast

    • 81
    • 90

    Partly Sunny

    • 81
    • 90

    Mostly Sunny

    • 82
    • 89

    Mostly Sunny

    • 82
    • 90

    Mostly Sunny

    • 82
    • 89

    Mostly Sunny

    • 82
    • 90

    Mostly Sunny

    • 82
    • 89

    Mostly Sunny

Today 21 Aug Calhoun Islands

Mostly cloudy this Morning, then becoming partly cloudy. Highs in the lower 90s. South Winds around 10 Mph. Heat index Values up to 111.

Tonight 21 Aug Calhoun Islands

Partly cloudy this Evening, then clearing. Lows in the lower 80s. South Winds 10 to 15 Mph, Diminishing to 5 to 10 Mph after midnight.

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  • Temperature Real-Time

Matagorda Island Temperature Statistics

August Temperature

Rockport Aransas County Airport (19.9 miles)

  • Lowest 2 August, 2026

    73.7 °F

  • Average August

    86.8 °F

  • Highest 1 August, 2026

    93.7 °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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