Sweetwater Lake Weather Forecast

    • 82
    • 94

    Partly Sunny

    • 82
    • 93

    Mostly Sunny

    • 84
    • 92

    Mostly Sunny

    • 83
    • 92

    Mostly Sunny

    • 83
    • 93

    Mostly Sunny

    • 83
    • 93

    Mostly Sunny

Today 22 Aug Galveston Island

Mostly sunny. Highs in the lower 90s. West Winds 5 to 10 Mph, becoming south 10 to 15 Mph this afternoon. Heat index Values up to 108.

Tonight 22 Aug Galveston Island

Partly cloudy in the Evening, then becoming mostly clear. Humid with Lows in the lower 80s. Southwest 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

    87.4 °F

  • Highest 2 August, 2026

    94.6 °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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