Galveston Bay Entrance - South Jetty Weather Forecast

    • 84
    • 88

    Thunderstorms Likely

    • 83
    • 88

    Thunderstorms Likely

    • 83
    • 87

    Mostly Sunny

    • 83
    • 87

    Mostly Sunny

    • 83
    • 87

    Chance Thunderstorms

    • 82
    • 87

    Chance Thunderstorms

Today 16 Sep Galveston Island

Mostly sunny. Humid with Highs in the lower 90s. East Winds 10 to 15 Mph. Heat index Values up to 107.

Tonight 16 Sep Galveston Island

Partly cloudy. A chance of Showers and Thunderstorms after midnight. Humid with Lows in the lower 80s. East Winds 10 to 15 Mph. Chance of rain 50 percent. Heat index Values up to 106 early.

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Galveston Bay Entrance - South Jetty Temperature Statistics

September Temperature

Galveston, Scholes Field (10.6 miles)

  • Lowest 4 September, 2026

    75.7 °F

  • Average September

    85.3 °F

  • Highest 3 September, 2026

    93.7 °F

Climate (2021–2026)

Galveston, Scholes Field (10.6 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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