The Sahuarita 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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92° on Nov. 11, 1999, the hottest reading for this week of the year since 1894. Next is 92° in 2020.
Sahuarita’s center stands about 2,700 ft above sea level. Within three miles the land runs from 2,670 ft to 3,060 ft, a difference of 390 ft: rolling country. The highest named summit within 15 miles is Mount Fagan, about 6,150 ft, 14 miles east-southeast.
The section below crosses 3 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 11×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sand, silt, clay. Age: Pleistocene to Holocene, less than 2 million years old. About 21 mi of the line.
Sand, gravel. Age: Holocene, less than 10,000 years old. About 2 mi of the line.
Granite. Age: Mesoproterozoic, 1.4 to 1.4 billion 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.
Sahuarita has a hot desert climate. Summer afternoons average 101° in June; winter nights fall to about 41° in January. About 11 inches of rain fall in a normal year.
On November 14 Sahuarita normally reaches 76° and falls to 48°. The record high is 90°, in 1999; the record low 24°, in 1916. The most rain on this date, 1.57 in, fell in 1968.
Normals 1991–2020 and records since 1894 from the Tucson Area threaded record (Tucson International Airport, 12 miles north, 150 ft lower). NOAA, through RCC-ACIS.
