The San Angelo 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.
90° on Nov. 14, 2025, the hottest reading for this week of the year since 1907. Next is 88° in 1989.
San Angelo’s center stands about 1,850 ft above sea level. Within three miles the land runs from 1,800 ft to 1,930 ft, a difference of 130 ft: gently rolling country. The highest named summit within 15 miles is Mount Nebo, about 2,320 ft, 12 miles north-northwest.
Under the town center the state geologic map shows Quaternary deposit, undivided (coarse-detrital, fine-detrital), from the Quaternary, less than 2.6 million years old.
The section below crosses 6 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 42×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Coarse-detrital, fine-detrital. Age: Quaternary, less than 2.6 million years old. About 15 mi of the line.
Fine-detrital, coarse-detrital. Age: Holocene, less than 12,000 years old. About 4 mi of the line.
Sandstone-mudstone. Age: Permian, 252 to 299 million years old. About 2 mi of the line.
Sandstone, claystone. Age: Early Cretaceous, 100 to 145 million years old. About 2 mi of the line.
Limestone. Age: Early Cretaceous, 100 to 113 million years old. About 0.9 mi of the line.
Shale. Age: Permian, 252 to 299 million years old. About 0.9 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 San Angelo reaches the Gulf of America by way of the Concho and the Colorado: about 690 river miles.
Lakes on the way: Buchanan Lake, Lake Marble Falls and Lake Lyndon B Johnson.
320 miles of the trip are on the Colorado.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of San Angelo; river miles along the main stem, rounded.
San Angelo has a humid subtropical climate. Summer afternoons average 97° in July; winter nights fall to about 34° in January. About 21 inches of rain fall in a normal year.
On November 14 San Angelo normally reaches 70° and falls to 43°. The record high is 90°, in 2025; the record low 18°, in 1976. The most rain on this date, 3.25 in, fell in 1934.
Normals 1991–2020 and records since 1907 from the San Angelo Area threaded record (San Angelo Mathis Field Airport, 8 miles south-southwest). NOAA, through RCC-ACIS.