Mont Belvieu Weather Forecast

    • 78
    • 92

    Chance Thunderstorms

    • 77
    • 91

    Chance Thunderstorms

    • 78
    • 91

    Chance Thunderstorms

    • 77
    • 90

    Chance Thunderstorms

    • 78
    • 89

    Chance Thunderstorms

    • 78
    • 89

    Slight Chance Thunderstorms

Today 6 Aug Chambers

Mostly sunny. Patchy fog in the morning. A slight chance of Showers and Thunderstorms in the Morning, then a chance of Showers and Thunderstorms in the afternoon. Humid with Highs in the lower 90s. South Winds 5 to 10 Mph. Chance of rain 40 percent. Heat index Values up to 105.

Tonight 6 Aug Chambers

Mostly clear. Patchy fog. Near steady temperature in the lower 80s. South Winds around 5 Mph.

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Mont Belvieu Temperature Statistics

August Temperature

Houston / Ellington (23.6 miles)

  • Lowest 1 August, 2026

    78.8 °F

  • Average August

    87.6 °F

  • Highest 1 August, 2026

    95 °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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