The Obert 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.
Mostly sunny
Mostly sunny; warmer
Mostly sunny
Partly cloudy
Partly cloudy
Mostly sunny
Showers likely
80° on Nov. 14, 2025, the hottest reading for this week of the year since 1893. Next is 79° in 1953.
Obert’s center stands about 1,350 ft above sea level. Within three miles the land runs from 1,190 ft to 1,540 ft, a difference of 350 ft: rolling country.
Under the town center the state geologic map shows Niobrara Formation (limestone, shale), from the Late Cretaceous, 66 to 100 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 38×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Limestone, shale. Age: Late Cretaceous, 66 to 100 million years old. About 8 mi of the line.
Siltstone-mudstone, conglomerate-sandstone. Age: Miocene, 5.3 to 23 million years old. About 7 mi of the line.
Shale, mudstone, marlstone. Age: Late Cretaceous, 66 to 100 million years old. About 2 mi of the line.
Shale. Age: Late Cretaceous, 66 to 100 million years old. About 2 mi of the line.
Shale. Age: Late Cretaceous, 66 to 100 million years old. About 1 mi of the line.
Sandstone. Age: Early Cretaceous to Late Cretaceous, 66 to 145 million years old. About 1 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 Obert reaches the Gulf of America by way of Lime Creek, the Missouri and the Mississippi: about 1,940 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 Obert; river miles along the main stem, rounded.
Obert has a hot-summer humid continental climate. Summer afternoons average 86° in July; winter nights fall to about 10° in January. About 28 inches of rain fall in a normal year.
On November 14 Obert normally reaches 49° and falls to 26°. The record high is 80°, in 2025; the record low −24°, in 1959. The most rain on this date, 1.26 in, fell in 1926.
Normals 1991–2020 and records since 1893 at Vermillion 2 SE, 7 miles northeast, 210 ft lower. NOAA, through RCC-ACIS.
