The Sunset Valley 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.
Chance of showers
Showers likely
Mostly cloudy; cooler
Mostly sunny; warmer
Mostly cloudy
Chance of showers
Partly cloudy
24° on Nov. 14, 2018, the coldest reading for this week of the year since 1942. Next is 25° in 2014.
Sunset Valley’s center stands about 680 ft above sea level. Within three miles the land runs from 530 ft to 820 ft, a difference of 290 ft: rolling country. The highest named summit within 15 miles is Flint Rock Hill, about 1,190 ft, 12 miles northwest.
The section below crosses 8 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 25×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Limestone, marlstone. Age: Early Cretaceous, 100 to 145 million years old. About 8 mi of the line.
Sand. Age: Pleistocene to Holocene, less than 2.6 million years old. About 4 mi of the line.
Claystone. Age: Late Cretaceous, 66 to 72 million years old. About 4 mi of the line.
Limestone. Age: Early Cretaceous, 100 to 113 million years old. About 3 mi of the line.
Gravel. Age: Pleistocene, less than 2.6 million years old. About 3 mi of the line.
Clay, limestone. Age: Late Cretaceous, 66 to 100 million years old. About 1 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 2 smaller units along the line are not listed.
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 Sunset Valley reaches the Gulf of America by way of Williamson Creek, Onion Creek and the Colorado: about 300 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Sunset Valley; river miles along the main stem, rounded.
Sunset Valley has a humid subtropical climate. Summer afternoons average 97° in August; winter nights fall to about 38° in January. About 36 inches of rain fall in a normal year.
On November 14 Sunset Valley normally reaches 72° and falls to 47°. The record high is 89°, in 2020; the record low 24°, in 2018. The most rain on this date, 0.87 in, fell in 1998.
Normals 1991–2020 and records since 1942 from the Austin-Bergstrom Airport Area threaded record (Austin-Camp Mabry, 7 miles north-northeast). NOAA, through RCC-ACIS.
