The Clemmons 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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Mostly sunny; warmer
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5.37 inches of rain fell in two days, the most for this week of the year since records began in 1899. The next wettest, 3.46 inches, fell in 2009.
Clemmons’s center stands about 840 ft above sea level. Within three miles the land runs from 680 ft to 860 ft, a difference of 180 ft: gently rolling country.
Under the town center the state geologic map shows Metamorphosed Mafic Rock (metagabbro, metadiorite), from the Neoproterozoic to Paleozoic, 252 to 1,000 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 55×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Metagabbro, metadiorite. Age: Neoproterozoic to Paleozoic, 252 to 1,000 million years old. About 13 mi of the line.
Biotite-gneiss, mica-schist, calc-silicate-rock. Age: Neoproterozoic to Cambrian, 487 to 1,000 million years old. About 9 mi of the line.
Granitic. Age: Late Mississippian to Permian, 265 to 325 million years old. About 2 mi of the line.
Metagranite. Age: Neoproterozoic to Cambrian, 487 to 1,000 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.
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 Clemmons reaches the Atlantic Ocean by way of the Yadkin, the Pee Dee, the Great Pee Dee, Schooner Creek and the Waccamaw: about 310 river miles.
Lake on the way: Lake Tillery.
150 miles of the trip are on the Great Pee Dee.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Clemmons; river miles along the main stem, rounded.
Clemmons has a humid subtropical climate. Summer afternoons average 88° in July; winter nights fall to about 31° in January. About 43 inches of rain fall in a normal year.
On November 14 Clemmons normally reaches 60° and falls to 39°. The record high is 81°, in 1931; the record low 19°, in 1906. The most rain on this date, 1.42 in, fell in 1940.
Normals 1991–2020 and records since 1899 at Winston Salem Reynolds Airport, 12 miles northeast, 120 ft higher. NOAA, through RCC-ACIS.
