The Orrin 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.
70° on Nov. 14, 2025, the hottest reading for this week of the year since 1964. Next is 69° in 1981.
Orrin’s center stands about 1,560 ft above sea level. Within three miles the land runs from 1,530 ft to 1,630 ft, a difference of 100 ft: gently rolling country.
Under the town center the state geologic map shows Fox Hills Formation (shale, sandstone), from the Late Cretaceous, 66 to 100 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, sandstone. Age: Late Cretaceous, 66 to 100 million years old. About 20 mi of the line.
Sandstone, siltstone, claystone. Age: Late Cretaceous, 66 to 100 million years old. About 4 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 Orrin reaches Hudson Bay by way of the North Fork Sheyenne, the Sheyenne, the Red River of the North and the Nelson: about 1,600 river miles. Past the border it runs north through Canada to Hudson Bay.
Lake on the way: Lake Winnipeg.
500 miles of the trip are on the Sheyenne.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Orrin; river miles along the main stem, rounded.
Orrin has a warm-summer humid continental climate. Summer afternoons average 81° in July; winter nights fall to about −3° in January. About 18 inches of rain fall in a normal year.
On November 14 Orrin normally reaches 36° and falls to 17°. The record high is 70°, in 2025; the record low −6°, in 1996. The most rain on this date, 0.55 in, fell in 1994.
Normals 1991–2020 and records since 1964 at Drake 9 NE, 7 miles west-southwest. NOAA, through RCC-ACIS.