San Luis Pass Weather Forecast

    • 84
    • 88

    Partly Sunny

    • 83
    • 88

    Slight Chance Thunderstorms

    • 85
    • 88

    Slight Chance Thunderstorms

    • 84
    • 88

    Slight Chance Thunderstorms

    • 84
    • 88

    Chance Thunderstorms

    • 83
    • 87

    Chance Thunderstorms

Today 12 Sep Galveston Island

Mostly sunny with a slight chance of Showers and Thunderstorms. Humid with Highs in the lower 90s. South Winds around 15 Mph. Chance of rain 20 percent. Heat index Values up to 109.

Tonight 12 Sep Galveston Island

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

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Luis Pass Temperature Statistics

September Temperature

Galveston, Scholes Field (19.9 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 (19.9 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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