Mont Belvieu Weather Forecast
- 61
- 74
Mostly Cloudy
- 57
- 73
Chance Thunderstorms
- 33
- 64
Partly Sunny
- 40
- 52
Mostly Cloudy
- 57
- 65
Slight Chance Rain Showers
- 61
- 71
Mostly Cloudy
Today 12 Dec Chambers
Areas of fog this morning. Partly sunny. Highs in the lower 70s. Southwest Winds around 5 Mph.
Tonight 12 Dec Chambers
Mostly cloudy. Patchy fog in the Evening, then Areas of fog after midnight. Lows around 60. East Winds around 5 Mph.
Mont Belvieu Temperature Statistics
December Temperature
Houston / Ellington (23.6 miles)
Lowest 2 December, 2025
39.2 °FAverage December
52.8 °FHighest 10 December, 2025
75.2 °F
Climate (2020–Present)
Houston / Ellington (23.6 miles)
Average Low 2020–2025
63.8 °FAverage 2020–2025
71.5 °FAverage High 2020–2025
79.9 °F