Mustang Lake Weather Forecast

    • 81
    • 90

    Increasing Clouds

    • 80
    • 90

    Partly Sunny

    • 80
    • 89

    Partly Sunny

    • 79
    • 90

    Mostly Cloudy

    • 80
    • 89

    Slight Chance Thunderstorms

    • 80
    • 89

    Partly Sunny

Today 23 Sep Coastal Calhoun

Sunny. A slight chance of Showers and Thunderstorms this afternoon. Highs in the lower 90s. Northeast Winds 5 to 10 Mph, increasing to east 10 to 15 Mph this afternoon. Chance of rain 20 percent.

Tonight 23 Sep Coastal Calhoun

Mostly clear in the Evening, then becoming partly cloudy. Lows around 80. East Winds 10 to 15 Mph, Diminishing to 5 to 10 Mph after midnight.

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Mustang Lake Temperature Statistics

September Temperature

Rockport Aransas County Airport (18.6 miles)

  • Lowest 10 September, 2026

    74.6 °F

  • Average September

    87.3 °F

  • Highest 4 September, 2026

    96.7 °F

Climate (2021–2026)

Rockport Aransas County Airport (18.6 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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