Lake Austin Weather Forecast

    • 75
    • 90

    Partly Sunny

    • 73
    • 90

    Becoming Sunny

    • 74
    • 90

    Slight Chance Thunderstorms

    • 74
    • 89

    Mostly Sunny

    • 74
    • 88

    Chance Rain Showers

    • 74
    • 89

    Chance Thunderstorms

    • 74
    • 90

    Chance Thunderstorms

Today 14 Sep Coastal Matagorda

Mostly sunny. A slight chance of Showers and Thunderstorms. Near steady temperature in the upper 80s. Southeast Winds 10 to 15 Mph. Chance of rain 20 percent.

Tonight 14 Sep Coastal Matagorda

Partly cloudy. Lows in the mid 70s. Southeast Winds 5 to 10 Mph.

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Lake Austin Temperature Statistics

September Temperature

Bay City, Bay City Municipal Airport (13 miles)

  • Lowest 10 September, 2025

    63.1 °F

  • Average September

    79.2 °F

  • Highest 4 September, 2025

    94.5 °F

Climate (2020–Present)

Bay City, Bay City Municipal Airport (13 miles)

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  • Average Low 2020–2025

    61.5 °F

  • Average 2020–2025

    70 °F

  • Average High 2020–2025

    79.7 °F
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