The Mont Belvieu plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.
Partly cloudy
Showers likely
Showers likely
Mostly sunny; warmer
Partly cloudy
Partly cloudy
Partly cloudy
25° on Nov. 14, 2018, the coldest reading for this week of the year since 1983. Next is 30° in 2019.
Mont Belvieu’s center stands about 70 ft above sea level. Within three miles the land runs from 20 ft to 70 ft, a difference of 50 ft: nearly flat ground.
Under the town center the state geologic map shows Beaumont Formation, areas predominantly clay (clay, silt), from the Pleistocene, less than 2.6 million years old.
The section below crosses 3 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 64×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Clay, silt. Age: Pleistocene, less than 2.6 million years old. About 13 mi of the line.
Sand. Age: Pleistocene, less than 2.6 million years old. About 5 mi of the line.
Fine-detrital, coarse-detrital. Age: Holocene, less than 12,000 years old. About 0.4 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale.
Heights from Copernicus GLO-90 (a surface model: it includes buildings and tree canopy); summits from USGS GNIS; rivers from USGS NHDPlus HR; rock from the USGS State Geologic Map Compilation.
A raindrop that lands in Mont Belvieu reaches Galveston Bay and the Gulf of America by way of Cedar Bayou: about 16 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Mont Belvieu; river miles along the main stem, rounded.
Mont Belvieu has a humid subtropical climate. Summer afternoons average 92° in August; winter nights fall to about 41° in January. About 65 inches of rain fall in a normal year.
On November 14 Mont Belvieu normally reaches 72° and falls to 50°. The record high is 85°, in 2005; the record low 25°, in 2018. The most rain on this date, 2.70 in, fell in 1998.
Normals 1991–2020 and records since 1983 at Baytown, 8 miles northwest. NOAA, through RCC-ACIS.
