Swan Lake Weather Forecast

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    • 92

    Slight Chance Thunderstorms

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    • 93

    Chance Thunderstorms

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    • 92

    Chance Thunderstorms

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    • 92

    Chance Thunderstorms

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    • 91

    Chance Thunderstorms

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    Chance Thunderstorms

Today 17 Aug Brazoria Islands

Sunny with Highs in the lower 90s. Southwest Winds around 5 Mph, becoming southeast 10 to 15 Mph in the afternoon. Heat index Values up to 105.

Tonight 17 Aug Brazoria Islands

Mostly clear. Humid with Lows around 80. Southeast Winds 10 to 15 Mph, becoming southwest 5 to 10 Mph after midnight.

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Swan Lake Temperature Statistics

August Temperature

Angleton / Lake Jackson, Brazoria County Airport (14.9 miles)

  • Lowest 10 August, 2025

    72.6 °F

  • Average August

    83.4 °F

  • Highest 8 August, 2025

    94.6 °F

Climate (2020–Present)

Angleton / Lake Jackson, Brazoria County Airport (14.9 miles)

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  • Average Low 2020–2025

    62.3 °F

  • Average 2020–2025

    71.4 °F

  • Average High 2020–2025

    81.2 °F
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