The Skillman 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.
Partly cloudy
Mostly sunny; warmer
Partly cloudy
Mostly sunny
Sunny
Mostly sunny
Mostly sunny
74° on Nov. 12, 2006, the hottest reading for this week of the year since 1956. Next is 74° in 2020.
Skillman’s center stands about 140 ft above sea level. Within three miles the land runs from 80 ft to 590 ft, a difference of 510 ft: hilly country. The highest named summit within 15 miles is Cushetunk Mountain, about 880 ft, 14 miles north-northwest.
Under the town center the state geologic map shows Passaic Formation (siltstone, shale), from the Early Jurassic to Late Jurassic, 145 to 202 million years old.
The section below crosses 8 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 34×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Siltstone, shale. Age: Early Jurassic to Late Jurassic, 145 to 202 million years old. About 7 mi of the line.
Siltstone. Age: Late Triassic to Early Jurassic, 175 to 237 million years old. About 6 mi of the line.
Siltstone-mudstone, sandstone-mudstone. Age: Late Triassic, 202 to 237 million years old. About 4 mi of the line.
Arkose. Age: Late Triassic, 202 to 237 million years old. About 3 mi of the line.
Plutonic. Age: Jurassic, 145 to 202 million years old. About 3 mi of the line.
Migmatite. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 0.5 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 2 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 Skillman reaches New York Harbor and the Atlantic Ocean by way of Back Brook, Pike Run, the Millstone and the Raritan: about 40 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Skillman; river miles along the main stem, rounded.
Skillman has a hot-summer humid continental climate. Summer afternoons average 85° in July; winter nights fall to about 22° in January. A normal year brings about 24 inches of snow; with the rain, that comes to about 51 inches of water.
Normals 1991–2020 and records since 1956 at Wertsville 4 NE, 4 miles west-northwest, 140 ft higher. NOAA, through RCC-ACIS.
