Sweetwater Lake Weather Forecast

    • 83
    • 93

    Becoming Sunny

    • 83
    • 91

    Mostly Sunny

    • 82
    • 91

    Mostly Sunny

    • 82
    • 90

    Slight Chance Thunderstorms

    • 82
    • 91

    Slight Chance Thunderstorms

    • 83
    • 90

    Chance Thunderstorms

Today 4 Aug Galveston Island

Sunny. Highs in the lower 90s. Southwest Winds 5 to 10 Mph, becoming south 10 to 15 Mph this afternoon. Heat index Values up to 107.

Tonight 4 Aug Galveston Island

Mostly clear. Humid with Lows in the mid 80s. South Winds 10 to 15 Mph.

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Sweetwater Lake Temperature Statistics

August Temperature

Galveston, Scholes Field (1.2 miles)

  • Lowest 2 August, 2026

    82 °F

  • Average August

    87 °F

  • Highest 2 August, 2026

    93 °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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