The Randolph 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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0° on Nov. 17, 2019, the coldest reading for this week of the year since 1948. Next is 4° in 1967.
Randolph’s center stands about 680 ft above sea level. Within three miles the land runs from 620 ft to 1,700 ft, a difference of 1,080 ft: steep hill country. The highest named summit within 15 miles is Bread Loaf Mountain, about 3,800 ft, 15 miles west-northwest.
The section below crosses 11 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 8×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Phyllite, muscovite-schist. Age: Neoproterozoic to Cambrian, 487 to 1,000 million years old. About 6 mi of the line.
Phyllite, limestone. Age: Silurian to Early Devonian, 394 to 425 million years old. About 5 mi of the line.
Quartzite, phyllite, mica-schist. Age: Early Devonian, 404 to 414 million years old. About 4 mi of the line.
Slate, phyllite, mica-schist. Age: Silurian to Early Devonian, 394 to 425 million years old. About 3 mi of the line.
Quartz-feldspar-schist, granofels. Age: Cambrian to Early Ordovician, 471 to 542 million years old. About 2 mi of the line.
Phyllite. Age: Cambrian, 487 to 542 million years old. About 0.9 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 5 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 Randolph reaches Long Island Sound and the Atlantic Ocean by way of the Third Branch White, the White River and the Connecticut: about 260 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Randolph; river miles along the main stem, rounded.
Randolph has a warm-summer humid continental climate. Summer afternoons average 78° in July; winter nights fall to about 7° in January. About 39 inches of rain fall in a normal year.
On November 14 Randolph normally reaches 44° and falls to 27°. The record high is 65°, in 2011; the record low 5°, in 2018. The most rain on this date, 1.74 in, fell in 2009.
Normals 1991–2020 and records since 1948 at Montpelier - Edward F. Knapp State Airport, 20 miles north-northeast, 420 ft higher. NOAA, through RCC-ACIS.
