Sweetwater Lake Weather Forecast

    • 82
    • 91

    Becoming Sunny

    • 83
    • 91

    Mostly Sunny

    • 82
    • 91

    Slight Chance Thunderstorms

    • 82
    • 93

    Mostly Sunny

    • 82
    • 92

    Slight Chance Thunderstorms

    • 81
    • 91

    Slight Chance Thunderstorms

Today 19 Sep Galveston Island

Sunny. Highs around 90. East Winds 10 to 15 Mph.

Tonight 19 Sep Galveston Island

Mostly clear. Humid with Lows in the lower 80s. Southeast Winds 5 to 10 Mph.

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  • Temperature Real-Time

Sweetwater Lake Temperature Statistics

September Temperature

Galveston, Scholes Field (1.2 miles)

  • Lowest 4 September, 2026

    75.7 °F

  • Average September

    85.5 °F

  • Highest 3 September, 2026

    93.7 °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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