The South Weber 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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75° on Nov. 14, 2025, the hottest reading for this week of the year since 1962. Next is 68° in 2020.
South Weber’s center stands about 4,510 ft above sea level. Within three miles the land runs from 4,420 ft to 7,140 ft, a difference of 2,720 ft: mountain country. The highest named summit within 15 miles is Thurston Peak, about 9,650 ft, 5 miles southeast.
Under the town center the state geologic map shows Alluvium and colluvium (unconsolidated), from the Quaternary, less than 2.6 million years old.
The section below crosses 6 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 4×. 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: Quaternary, less than 2.6 million years old. About 9 mi of the line.
Clay. Age: Pleistocene, less than 2.6 million years old. About 5 mi of the line.
Andesite. Age: Late Eocene to Oligocene, 23 to 38 million years old. About 4 mi of the line.
Metamorphic. Age: Neoarchean to Paleoproterozoic, 1.6 to 2.8 billion years old. About 4 mi of the line.
Peat. Age: Holocene, less than 12,000 years old. About 1 mi of the line.
Mudstone, conglomerate. Age: Late Paleocene to Early Eocene, 48 to 59 million years old. About 0.7 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.
A raindrop that lands in South Weber reaches Great Salt Lake by way of the Weber: about 30 river miles. Great Salt Lake has no outlet to the sea: the water leaves only by evaporating or soaking into the ground.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of South Weber; river miles along the main stem, rounded.
South Weber has a dry-summer hot-summer continental climate. Summer afternoons average 92° in July; winter nights fall to about 20° in January. A normal year brings about 23 inches of snow; with the rain, that comes to about 26 inches of water.
Normals 1991–2020 and records since 1962 at Weber Basin Pump Plant 3, here, 390 ft higher. NOAA, through RCC-ACIS.
