The Ventura 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.
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9° on Nov. 14, 1976, the coldest reading for this week of the year since 1920. Next is 17° in 2018.
Ventura’s center stands about 4,260 ft above sea level. Within three miles the land runs from 4,230 ft to 4,310 ft, a difference of 80 ft: gently rolling country. The highest named summit within 15 miles is Florida Peak, about 7,360 ft, 9 miles south-southeast.
Under the town center the state geologic map shows Alluvium (unconsolidated), from the Pleistocene to Holocene, less than 0.1 million years old.
The section below crosses 5 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 7×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Unconsolidated. Age: Pleistocene to Holocene, less than 2.6 million years old. About 11 mi of the line.
Unconsolidated. Age: Pleistocene to Holocene, less than 0.1 million years old. About 6 mi of the line.
Andesite, latite. Age: Middle Eocene to Early Oligocene, 33 to 43 million years old. About 3 mi of the line.
Plutonic. Age: Cambrian to Ordovician, 445 to 542 million years old. About 3 mi of the line.
Unconsolidated. Age: Late Pliocene to Pleistocene, 0.1 to 3.6 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.
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.
Ventura has a cold semi-arid climate. Summer afternoons average 96° in June; winter nights fall to about 27° in January. About 9 inches of rain fall in a normal year.
On November 14 Ventura normally reaches 67° and falls to 35°. The record high is 83°, in 2017; the record low 9°, in 1976. The most rain on this date, 0.62 in, fell in 2004.
Normals 1991–2020 and records since 1920 at Deming Municipal Airport, 2 miles west-northwest. NOAA, through RCC-ACIS.
