Kemah Weather Forecast

    • 76
    • 89

    Chance Thunderstorms

    • 74
    • 86

    Chance Thunderstorms

    • 72
    • 86

    Slight Chance Thunderstorms

    • 73
    • 87

    Sunny

    • 74
    • 89

    Slight Chance Thunderstorms

    • 75
    • 89

    Slight Chance Thunderstorms

Today 6 Sep Coastal Galveston

Mostly sunny with a chance of Showers and Thunderstorms. Near steady temperature in the upper 80s. East Winds 5 to 10 Mph. Chance of rain 40 percent.

Tonight 6 Sep Coastal Galveston

Partly cloudy with a slight chance of Showers and Thunderstorms in the Evening, then mostly cloudy with a chance of Showers and Thunderstorms after midnight. Humid with Lows in the mid 70s. East Winds 5 to 10 Mph, becoming northeast after midnight. Chance of rain 40 percent.

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Kemah Temperature Statistics

September Temperature

Houston / Ellington (9.3 miles)

  • Lowest 1 September, 2025

    75.2 °F

  • Average September

    82.6 °F

  • Highest 3 September, 2025

    95 °F

Climate (2020–Present)

Houston / Ellington (9.3 miles)

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  • Average Low 2020–2025

    63.7 °F

  • Average 2020–2025

    71.3 °F

  • Average High 2020–2025

    79.7 °F
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