The Cool 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.
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91° on Nov. 17, 2025, the hottest reading for this week of the year since 1948. Next is 89° in 1950.
Cool’s center stands about 930 ft above sea level. Within three miles the land runs from 810 ft to 1,120 ft, a difference of 310 ft: rolling country. The highest named summit within 15 miles is Slipdown Mountain, about 1,370 ft, 11 miles north-northeast.
The section below crosses 10 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 35×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Claystone, sandstone. Age: Early Cretaceous, 100 to 145 million years old. About 6 mi of the line.
Black-shale. Age: Carboniferous, 299 to 324 million years old. About 4 mi of the line.
Limestone, marlstone. Age: Early Cretaceous, 100 to 145 million years old. About 3 mi of the line.
Sandstone. Age: Carboniferous, 299 to 324 million years old. About 3 mi of the line.
Black-shale. Age: Carboniferous, 299 to 324 million years old. About 2 mi of the line.
Sandstone. Age: Early Cretaceous, 100 to 145 million years old. About 2 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 4 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 Cool reaches the Gulf of America by way of Dry Creek, Rock Creek and the Brazos: about 620 river miles.
Lake on the way: Lake Granbury.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Cool; river miles along the main stem, rounded.
Cool has a humid subtropical climate. Summer afternoons average 96° in July; winter nights fall to about 33° in January. About 32 inches of rain fall in a normal year.
On November 14 Cool normally reaches 68° and falls to 43°. The record high is 87°, in 1989; the record low 19°, in 2018. The most rain on this date, 2.36 in, fell in 1994.
Normals 1991–2020 and records since 1948 at Mineral Wells Airport, 4 miles west-southwest. NOAA, through RCC-ACIS.
