The Simpsonville 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.
Sunny
Sunny; warmer
Sunny
Sunny
Sunny
Mostly sunny
Mostly sunny
3.05 inches of rain fell in two days, the most for this week of the year since records began in 1884. The next wettest, 3.02 inches, fell in 1889.
Simpsonville’s center stands about 870 ft above sea level. Within three miles the land runs from 760 ft to 940 ft, a difference of 180 ft: gently rolling country. The highest named summit within 15 miles is Piney Mountain, about 1,360 ft, 13 miles northwest.
Under the town center the state geologic map shows Sillimanite schist and sillimanite-mica schist (mica-schist), from the Neoproterozoic to Cambrian, 487 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 40×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Gneiss. Age: Paleozoic, 252 to 542 million years old. About 9 mi of the line.
Mica-schist. Age: Neoproterozoic to Cambrian, 487 to 1,000 million years old. About 8 mi of the line.
Gneiss. Age: Paleozoic, 252 to 542 million years old. About 5 mi of the line.
Biotite-gneiss. Age: Neoproterozoic to Cambrian, 487 to 1,000 million years old. About 3 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 Simpsonville reaches the Atlantic Ocean by way of Rocky Creek, the Reedy, the Saluda, the Congaree, the Santee and the South Santee: about 310 river miles.
Lakes on the way: Lib Pines Lake and Lake Murray.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Simpsonville; river miles along the main stem, rounded.
Simpsonville has a humid subtropical climate. Summer afternoons average 90° in July; winter nights fall to about 32° in January. About 50 inches of rain fall in a normal year, with about 4 inches of snow.
On November 14 Simpsonville normally reaches 63° and falls to 41°. The record high is 79°, in 2007; the record low 20°, in 1906. The most rain on this date, 1.31 in, fell in 2024.
Normals 1991–2020 and records since 1884 from the Greenville-Spartanburg Area threaded record (Grnvl Spart International Airport, 12 miles north-northeast). NOAA, through RCC-ACIS.
