The Ninnekah 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.
90° on Nov. 16, 2025, the hottest reading for this week of the year since 1953. Next is 84° in 1999.
Ninnekah’s center stands about 1,120 ft above sea level. Within three miles the land runs from 1,060 ft to 1,250 ft, a difference of 190 ft: gently rolling country. The highest named summit within 15 miles is Gyp Hill, about 1,430 ft, 14 miles southwest.
Under the town center the state geologic map shows Chickasha Formation (conglomerate, shale, siltstone), from the Permian, 252 to 299 million years old.
The section below crosses 7 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 43×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Black-shale. Age: Late Devonian, 359 to 384 million years old. About 8 mi of the line.
Sandstone. Age: Permian, 252 to 299 million years old. About 6 mi of the line.
Conglomerate, shale, siltstone. Age: Permian, 252 to 299 million years old. About 4 mi of the line.
Sandstone, conglomerate. Age: Permian, 252 to 299 million years old. About 4 mi of the line.
Fine-detrital. Age: Holocene, less than 12,000 years old. About 1 mi of the line.
Sandstone, siltstone. Age: Permian, 252 to 299 million years old. About 1.0 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 1 smaller unit 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 Ninnekah reaches the Gulf of America by way of the Little Washita, the Washita, the Red River, the Atchafalaya and the Lower Atchafalaya: about 1,040 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 Ninnekah; river miles along the main stem, rounded.
Ninnekah has a humid subtropical climate. Summer afternoons average 97° in July; winter nights fall to about 27° in January. About 37 inches of rain fall in a normal year, with about 5 inches of snow.
On November 14 Ninnekah normally reaches 65° and falls to 39°. The record high is 83°, in 2025; the record low 17°, in 1959. The most rain on this date, 0.74 in, fell in 1993.
Normals 1991–2020 and records since 1953 at Chickasha Experiment Station, 7 miles north. NOAA, through RCC-ACIS.