Clear Lake Weather Forecast

    • 75
    • 91

    Becoming Sunny

    • 76
    • 90

    Partly Sunny

    • 77
    • 91

    Partly Sunny

    • 78
    • 91

    Slight Chance Thunderstorms

    • 78
    • 90

    Rain Showers Likely

    • 74
    • 89

    Rain Showers Likely

Today 25 Sep Coastal Galveston

Mostly sunny. Highs around 90. Northeast Winds 5 to 10 Mph.

Tonight 25 Sep Coastal Galveston

Mostly clear in the Evening, then becoming partly cloudy. Lows in the mid 70s. East Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Clear Lake Temperature Statistics

September Temperature

Houston / Ellington (6.8 miles)

  • Lowest 19 September, 2026

    75.2 °F

  • Average September

    84.2 °F

  • Highest 7 September, 2026

    95 °F

Climate (2021–2026)

Houston / Ellington (6.8 miles)

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  • Average Low 2021–2026

    64.4 °F

  • Average 2021–2026

    72 °F

  • Average High 2021–2026

    80.5 °F
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