The Randolph 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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83° on Nov. 14, 1999, the hottest reading for this week of the year since 1918. Next is 78° in 1964.
Randolph’s center stands about 970 ft above sea level. Within three miles the land runs from 940 ft to 1,120 ft, a difference of 180 ft: gently rolling country. The highest named summit within 15 miles is King Hill, about 1,190 ft, 14 miles west.
Under the town center the state geologic map shows Wabaunsee Group (shale, mudstone), from the Late Pennsylvanian, 299 to 307 million years old.
The section below crosses 2 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.
Shale, mudstone. Age: Late Pennsylvanian, 299 to 307 million years old. About 16 mi of the line.
Limestone, shale. Age: Late Pennsylvanian, 299 to 307 million years old. About 8 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 Randolph reaches the Gulf of America by way of Deer Creek, the West Nishnabotna, the Nishnabotna, the Missouri and the Mississippi: about 1,730 river miles.
1,170 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Randolph; river miles along the main stem, rounded.
Randolph has a hot-summer humid continental climate. Summer afternoons average 87° in July; winter nights fall to about 14° in January. A normal year brings about 26 inches of snow; with the rain, that comes to about 36 inches of water.
On November 14 Randolph normally reaches 51° and falls to 30°. The record high is 83°, in 1999; the record low −2°, in 1959. The most rain on this date, 0.72 in, fell in 2024.
Normals 1991–2020 and records since 1918 at Shenandoah, 12 miles southeast. NOAA, through RCC-ACIS.
