The Byron 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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68° on Nov. 11, 2020, the hottest reading for this week of the year since 1969. Next is 67° in 2002.
Byron’s center stands about 900 ft above sea level. Within three miles the land runs from 760 ft to 2,420 ft, a difference of 1,660 ft: steep hill country. The highest named summit within 15 miles is Elephant Mountain, about 3,770 ft, 8 miles west-northwest.
Under the town center the state geologic map shows Silurian Perry Mountain Formation (sandstone, shale), from the Silurian, 422 to 445 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 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.
Granite. Age: Devonian, 359 to 422 million years old. About 9 mi of the line.
Schist. Age: Devonian, 359 to 422 million years old. About 4 mi of the line.
Granodiorite. Age: Devonian, 359 to 422 million years old. About 4 mi of the line.
Sandstone, shale. Age: Silurian, 422 to 445 million years old. About 3 mi of the line.
Mudstone, sandstone. Age: Early Devonian, 410 to 414 million years old. About 3 mi of the line.
Shale, sandstone, conglomerate. Age: Silurian, 434 to 445 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. 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 Byron reaches the Atlantic Ocean by way of the Swift, the Androscoggin and the Kennebec: about 120 river miles.
90 miles of the trip are on the Androscoggin.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Byron; river miles along the main stem, rounded.
Byron has a warm-summer humid continental climate. Summer afternoons average 76° in July; winter nights fall to about 0° in January. A normal year brings about 123 inches of snow; with the rain, that comes to about 43 inches of water.
On November 14 Byron normally reaches 41° and falls to 24°. The record high is 60°, in 2010; the record low 4°, in 2019. The most rain on this date, 0.65 in, fell in 2018.
Normals 1991–2020 and records since 1969 at Rangeley, 17 miles north, 630 ft higher. NOAA, through RCC-ACIS.
