Sweetwater Lake Weather Forecast

    • 78
    • 86

    Chance Thunderstorms

    • 76
    • 86

    Rain Showers

    • 76
    • 84

    Thunderstorms Likely

    • 78
    • 86

    Chance Thunderstorms

    • 79
    • 87

    Rain Showers Likely

    • 79
    • 86

    Chance Thunderstorms

Today 22 May Galveston Island

Mostly sunny with a chance of Showers and Thunderstorms. Highs in the mid 80s. South Winds 5 to 10 Mph. Chance of rain 40 percent.

Tonight 22 May Galveston Island

Mostly cloudy with a slight chance of Showers and Thunderstorms. Near steady temperature in the mid 70s. South Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sweetwater Lake Temperature Statistics

May Temperature

Galveston, Scholes Field (1.2 miles)

  • Lowest 2 May, 2026

    56.6 °F

  • Average May

    76.6 °F

  • Highest 9 May, 2026

    87.7 °F

Climate (2021–Present)

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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