Sweetwater Lake Weather Forecast

    • 83
    • 91

    Slight Chance Thunderstorms

    • 82
    • 91

    Partly Sunny

    • 80
    • 91

    Mostly Sunny

    • 80
    • 92

    Mostly Sunny

    • 81
    • 93

    Mostly Sunny

    • 82
    • 93

    Mostly Sunny

Today 17 Jul Galveston Island

Mostly sunny. A slight chance of Showers and Thunderstorms in the morning. Humid with Highs around 90. South Winds 10 to 15 Mph. Chance of rain 20 percent. Heat index Values up to 105.

Tonight 17 Jul Galveston Island

Mostly cloudy with a slight chance of Showers and Thunderstorms. Near steady temperature in the lower 80s. South Winds 10 to 15 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sweetwater Lake Temperature Statistics

July Temperature

Galveston, Scholes Field (1.2 miles)

  • Lowest 14 July, 2026

    73.9 °F

  • Average July

    85.7 °F

  • Highest 6 July, 2026

    92.6 °F

Climate (2021–2026)

Galveston, Scholes Field (1.2 miles)

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  • Average Low 2021–2026

    68.6 °F

  • Average 2021–2026

    73.8 °F

  • Average High 2021–2026

    79.6 °F
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