The Owasso 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
Chance of showers
Sunny; warmer
Partly cloudy
Chance of showers
Mostly cloudy
Chance of showers
87° on Nov. 15, 2025, the hottest reading for this week of the year since 1893. Next is 85° in 1911.
Owasso’s center stands about 610 ft above sea level. Within three miles the land runs from 570 ft to 730 ft, a difference of 160 ft: gently rolling country. The highest named summit within 15 miles is Holmes Peak, about 1,020 ft, 12 miles west-southwest.
Under the town center the state geologic map shows Nowata Formation (shale), from the Carboniferous, 299 to 324 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 51×. 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: Carboniferous, 299 to 324 million years old. About 6 mi of the line.
Shale, sandstone, conglomerate. Age: Carboniferous, 299 to 324 million years old. About 4 mi of the line.
Shale. Age: Carboniferous, 299 to 324 million years old. About 4 mi of the line.
Shale, sandstone, limestone. Age: Carboniferous, 299 to 324 million years old. About 3 mi of the line.
Fine-detrital. Age: Holocene, less than 12,000 years old. About 3 mi of the line.
Sandstone, shale. Age: Carboniferous, 299 to 324 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. 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 Owasso reaches the Gulf of America by way of Bird Creek, the Verdigris, the Arkansas and the Mississippi: about 1,070 river miles.
Lakes on the way: Murray Lake and Ozark Lake.
600 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Owasso; river miles along the main stem, rounded.
Owasso has a humid subtropical climate. Summer afternoons average 94° in July; winter nights fall to about 28° in January. A normal year brings about 9 inches of snow; with the rain, that comes to about 41 inches of water.
On November 14 Owasso normally reaches 62° and falls to 40°. The record high is 79°, in 2020; the record low 13°, in 1916. The most rain on this date, 1.72 in, fell in 1909.
Normals 1991–2020 and records since 1893 from the Tulsa Area threaded record (Tulsa International Airport, 5 miles south-southwest). NOAA, through RCC-ACIS.
