Sweetwater Lake Weather Forecast

    • 83
    • 93

    Mostly Sunny

    • 83
    • 94

    Mostly Sunny

    • 82
    • 93

    Chance Thunderstorms

    • 82
    • 92

    Slight Chance Thunderstorms

    • 83
    • 92

    Mostly Sunny

    • 83
    • 91

    Chance Thunderstorms

Today 25 Aug Galveston Island

Sunny. Highs in the lower 90s. Southwest Winds 5 to 10 Mph, becoming south this afternoon. Heat index Values up to 107.

Tonight 25 Aug Galveston Island

Mostly clear. Humid with Lows in the mid 80s. South Winds 10 to 15 Mph. Heat index Values up to 105 early.

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Sweetwater Lake Temperature Statistics

August Temperature

Galveston, Scholes Field (1.2 miles)

  • Lowest 10 August, 2026

    78.7 °F

  • Average August

    87.6 °F

  • Highest 22 August, 2026

    95.6 °F

Climate (2021–2026)

Galveston, Scholes Field (1.2 miles)

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  • Average Low 2021–2026

    68.6 °F

  • Average 2021–2026

    73.9 °F

  • Average High 2021–2026

    79.6 °F
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