Mont Belvieu Weather Forecast

    • 47
    • 51

    Chance Rain Showers

    • 53
    • 65

    Mostly Cloudy

    • 42
    • 72

    Mostly Sunny

    • 39
    • 60

    Mostly Sunny

    • 47
    • 63

    Mostly Sunny

    • 50
    • 73

    Mostly Sunny

Today 5 Dec Chambers

Cloudy with a 50 percent chance of Showers. Highs in the lower 50s. North Winds 5 to 10 Mph.

Tonight 5 Dec Chambers

Cloudy with a 20 percent chance of Showers. Cooler. Near steady temperature around 40. North Winds around 10 Mph with Gusts up to 20 Mph.

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Mont Belvieu Temperature Statistics

December Temperature

Houston / Ellington (23.6 miles)

  • Lowest 2 December, 2025

    39.2 °F

  • Average December

    45.3 °F

  • Highest 2 December, 2025

    55.4 °F

Climate (2020–Present)

Houston / Ellington (23.6 miles)

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  • Average Low 2020–2025

    63.8 °F

  • Average 2020–2025

    71.5 °F

  • Average High 2020–2025

    79.9 °F
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