Mont Belvieu Weather Forecast

    • 76
    • 89

    Thunderstorms Likely

    • 77
    • 90

    Rain Showers Likely

    • 77
    • 91

    Chance Thunderstorms

    • 77
    • 90

    Chance Thunderstorms

    • 76
    • 88

    Chance Thunderstorms

    • 76
    • 89

    Chance Thunderstorms

Today 5 Sep Chambers

Partly sunny with a chance of Showers and Thunderstorms in the Morning, then mostly cloudy with Showers and Thunderstorms likely in the afternoon. Humid with Highs in the upper 80s. North Winds around 5 Mph, becoming east in the afternoon. Chance of rain 70 percent.

Tonight 5 Sep Chambers

Mostly cloudy. Near steady temperature in the upper 70s. North Winds around 5 Mph.

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Mont Belvieu Temperature Statistics

September Temperature

Houston / Ellington (23.6 miles)

  • Lowest 1 September, 2026

    80.6 °F

  • Average September

    84 °F

  • Highest 2 September, 2026

    93.2 °F

Climate (2021–2026)

Houston / Ellington (23.6 miles)

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  • Average Low 2021–2026

    64.3 °F

  • Average 2021–2026

    72 °F

  • Average High 2021–2026

    80.4 °F
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