Sweetwater Lake Weather Forecast

    • 79
    • 92

    Decreasing Clouds

    • 79
    • 90

    Mostly Sunny

    • 79
    • 89

    Slight Chance Thunderstorms

    • 79
    • 88

    Slight Chance Thunderstorms

    • 79
    • 88

    Chance Rain Showers

    • 79
    • 88

    Slight Chance Thunderstorms

    • 79
    • 88

    Slight Chance Thunderstorms

Today 15 Sep Galveston Island

Partly sunny. Near steady temperature in the upper 80s. Southeast Winds 5 to 10 Mph.

Tonight 15 Sep Galveston Island

Mostly clear. Lows around 80. Southeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sweetwater Lake Temperature Statistics

September Temperature

Galveston, Scholes Field (1.2 miles)

  • Lowest 10 September, 2025

    75.2 °F

  • Average September

    82.4 °F

  • Highest 2 September, 2025

    87.8 °F

Climate (2020–Present)

Galveston, Scholes Field (1.2 miles)

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  • Average Low 2020–2025

    68.3 °F

  • Average 2020–2025

    73.4 °F

  • Average High 2020–2025

    79.2 °F
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