San Antonio Bay Weather Forecast

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    • 89

    Increasing Clouds

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    • 90

    Chance Rain Showers

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    • 89

    Chance Thunderstorms

    • 83
    • 90

    Chance Thunderstorms

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    • 89

    Rain Showers Likely

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    Chance Thunderstorms

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    Chance Rain Showers

Today 12 Sep Calhoun Islands

Sunny. Highs in the lower 90s. South Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 12 Sep Calhoun Islands

Mostly clear this Evening, then becoming partly cloudy. Lows in the lower 80s. South Winds 10 to 15 Mph.

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  • Temperature Real-Time

San Antonio Bay Temperature Statistics

September Temperature

Rockport Aransas County Airport (21.7 miles)

  • Lowest 10 September, 2026

    75 °F

  • Average September

    87.4 °F

  • Highest 4 September, 2026

    96.7 °F

Climate (2021–2026)

Rockport Aransas County Airport (21.7 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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