The Hennepin 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; cooler
Chance of showers; warmer
Sunny
Chance of showers
Mostly cloudy
Chance of showers
90° on Nov. 16, 2025, the hottest reading for this week of the year since 1894. Next is 89° in 1911.
Hennepin’s center stands about 930 ft above sea level. Within three miles the land runs from 850 ft to 1,210 ft, a difference of 360 ft: rolling country. The highest named summit within 15 miles is Table Hill, about 1,300 ft, 14 miles northwest.
Under the town center the state geologic map shows Wellington Formation (shale, sandstone, conglomerate), from the Permian, 252 to 299 million years old.
The section below crosses 9 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 37×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sandstone, conglomerate. Age: Permian, 252 to 299 million years old. About 6 mi of the line.
Shale, sandstone, conglomerate. Age: Permian, 252 to 299 million years old. About 5 mi of the line.
Limestone, dolostone. Age: Cambrian, 487 to 497 million years old. About 4 mi of the line.
Limestone, conglomerate, dolostone. Age: Early Ordovician, 471 to 487 million years old. About 3 mi of the line.
Limestone, dolostone, sandstone. Age: Early Ordovician, 471 to 487 million years old. About 2 mi of the line.
Black-shale. Age: Late Devonian, 359 to 384 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. 3 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 Hennepin reaches the Gulf of America by way of Fivemile Creek, Sandy Bear Creek, the Washita, the Red River, the Atchafalaya and the Lower Atchafalaya: about 940 river miles.
680 miles of the trip are on the Red River.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Hennepin; river miles along the main stem, rounded.
Hennepin has a humid subtropical climate. Summer afternoons average 95° in July; winter nights fall to about 26° in January. About 37 inches of rain fall in a normal year, with about 2 inches of snow.
On November 14 Hennepin normally reaches 65° and falls to 38°. The record high is 83°, in 1973; the record low 12°, in 2018. The most rain on this date, 1.70 in, fell in 1994.
Normals 1991–2020 and records since 1894 at Healdton 3 E, 19 miles south-southwest. NOAA, through RCC-ACIS.
