The Yorktown 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
Chance of showers; cooler
Mostly sunny
Partly cloudy; warmer
Partly cloudy
Partly cloudy
98° on Nov. 11, 2006, the hottest reading for this week of the year since 1901. Next is 94° in 1910.
Yorktown’s center stands about 280 ft above sea level. Within three miles the land runs from 250 ft to 370 ft, a difference of 120 ft: gently rolling country.
Under the town center the state geologic map shows Terrace deposits (sand), from the Pleistocene to Holocene, less than 2.6 million years old.
The section below crosses 4 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, sandstone. Age: Miocene, 5.3 to 23 million years old. About 9 mi of the line.
Sandstone, clay. Age: Miocene, 5.3 to 23 million years old. About 6 mi of the line.
Clay, sandstone. Age: Miocene, 5.3 to 23 million years old. About 5 mi of the line.
Sand. Age: Pleistocene to Holocene, less than 2.6 million years old. About 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 Yorktown reaches the Gulf of America by way of Yorktown Creek, Fifteenmile Creek, Coleto Creek, the Guadalupe and the South Guadalupe: about 90 river miles.
Often dry. About 30% of the way is mapped as streams that run only after rain or snowmelt; the water makes the whole trip in floods.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Yorktown; river miles along the main stem, rounded.
Yorktown has a humid subtropical climate. Summer afternoons average 98° in August; winter nights fall to about 42° in January. About 34 inches of rain fall in a normal year.
On November 14 Yorktown normally reaches 76° and falls to 50°. The record high is 91°, in 2005; the record low 26°, in 2018. The most rain on this date, 0.90 in, fell in 1902.
Normals 1991–2020 and records since 1901 at Cuero, 12 miles northeast. NOAA, through RCC-ACIS.
