The Dubois 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.
Partly cloudy
Partly cloudy
Partly cloudy
Showers likely
Mostly sunny; cooler
Showers likely
Showers likely
74° on Nov. 14, 1956, the hottest reading for this week of the year since 1905. Next is 71° in 1934.
Dubois’s center stands about 6,940 ft above sea level. Within three miles the land runs from 6,840 ft to 8,500 ft, a difference of 1,660 ft: steep hill country. The highest named summit within 15 miles is Shale Mountain, about 12,360 ft, 12 miles south-southwest.
The section below crosses 11 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 4×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Claystone, sandstone. Age: Eocene, 34 to 56 million years old. About 7 mi of the line.
Sand, gravel, boulders. Age: Pleistocene to Holocene, less than 2.6 million years old. About 6 mi of the line.
Granite. Age: Archean. About 3 mi of the line.
Migmatite, metagabbro. Age: Archean. About 3 mi of the line.
Clay, silt, sand. Age: Pleistocene to Holocene, less than 2.6 million years old. About 2 mi of the line.
Unconsolidated. Age: Pleistocene to Holocene, less than 2.6 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. 5 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 Dubois reaches the Gulf of America by way of the Wind River, the Bighorn, the Yellowstone, the Missouri and the Mississippi: about 3,470 river miles.
Lakes on the way: Lake Oahe, Lake Sakakawea, Lake Sharpe and Lake Francis Case.
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 Dubois; river miles along the main stem, rounded.
Dubois has a cold semi-arid climate. Summer afternoons average 79° in July; winter nights fall to about 13° in January. A normal year brings about 55 inches of snow; with the rain, that comes to about 11 inches of water.
On November 14 Dubois normally reaches 43° and falls to 19°. The record high is 74°, in 1956; the record low −25°, in 1959. The most rain on this date, 0.56 in, fell in 1988.
Normals 1991–2020 and records since 1905 at Dubois, here. NOAA, through RCC-ACIS.
