The Onida 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
Sunny; warmer
Mostly sunny
Partly cloudy
Partly cloudy
Partly cloudy
Showers likely
74° on Nov. 12, 2016, the hottest reading for this week of the year since 1913. Next is 73° in 2005.
Onida’s center stands about 1,870 ft above sea level. Within three miles the land runs from 1,820 ft to 1,920 ft, a difference of 100 ft: gently rolling country.
Under the town center the state geologic map shows Pierre Shale (shale, bentonite), from the Late Cretaceous, 66 to 100 million years old.
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, bentonite. Age: Late Cretaceous, 66 to 100 million years old. About 24 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.
Onida has a hot-summer humid continental climate. Summer afternoons average 87° in July; winter nights fall to about 7° in January. A normal year brings about 49 inches of snow; with the rain, that comes to about 21 inches of water.
On November 14 Onida normally reaches 44° and falls to 23°. The record high is 69°, in 1975; the record low −21°, in 1940. The most rain on this date, 0.80 in, fell in 1928.
Normals 1991–2020 and records since 1913 at Onida 4 NW, 4 miles west-northwest. NOAA, through RCC-ACIS.
