The Plymouth 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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76° on Nov. 12, 2022, the hottest reading for this week of the year since 1996. Next is 75° in 2020.
Plymouth’s center stands about 60 ft above sea level. Within three miles the land runs from 0 ft to 230 ft, a difference of 230 ft: rolling country. Open water lies within three miles. The highest named summit within 15 miles is Pine Hills, about 410 ft, 5 miles east-southeast.
Under the town center the state geologic map shows Granite, gneiss, and schist, undivided (granite, gneiss, schist), from the Neoproterozoic, 542 to 1,000 million years old.
The section below crosses 2 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 59×. 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, gneiss, schist. Age: Neoproterozoic, 542 to 1,000 million years old. About 13 mi of the line.
Sandstone, graywacke. Age: Carboniferous, 299 to 324 million years old. About 4 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.
Rain that falls on Plymouth runs only a short way, about 3 miles, to the Atlantic Ocean.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Plymouth; river miles along the main stem, rounded.
Plymouth has a hot-summer humid continental climate. Summer afternoons average 82° in July; winter nights fall to about 20° in January. About 48 inches of rain fall in a normal year.
On November 14 Plymouth normally reaches 53° and falls to 34°. The record high is 68°, in 2005; the record low 17°, in 2019. The most rain on this date, 0.51 in, fell in 2000.
Normals 1991–2020 and records since 1996 at Plymouth Municipal Airport, 5 miles southwest. NOAA, through RCC-ACIS.
