The York Harbor 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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74° on Nov. 11, 2020, the hottest reading for this week of the year since 1973. Next is 74° in 2022.
York Harbor’s center stands about 80 ft above sea level. Within three miles the land runs from 0 ft to 250 ft, a difference of 250 ft: rolling country. Open water lies within three miles. The highest named summit within 15 miles is Mount Agamenticus, about 690 ft, 6 miles north-northwest.
Under the town center the state geologic map shows Silurian - Precambrian Z Kittery Formation (metasandstone, phyllite), from the Neoproterozoic to Silurian, 422 to 1,000 million years old.
The section below crosses 7 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 28×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Metasandstone, phyllite. Age: Neoproterozoic to Silurian, 422 to 1,000 million years old. About 5 mi of the line.
Quartz-alkali-feldspar-syenite. Age: Cretaceous, 66 to 145 million years old. About 2 mi of the line.
Granite. Age: Cretaceous, 66 to 145 million years old. About 2 mi of the line.
Alkali-feldspar-granite. Age: Cretaceous, 66 to 145 million years old. About 2 mi of the line.
Granite. Age: Devonian, 359 to 422 million years old. About 1 mi of the line.
Gneiss. Age: Neoproterozoic to Silurian, 422 to 1,000 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. 1 smaller unit 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.
Rain that falls on York Harbor runs straight into the Atlantic Ocean.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of York Harbor; river miles along the main stem, rounded.
York Harbor has a warm-summer humid continental climate. Summer afternoons average 81° in July; winter nights fall to about 16° in January. A normal year brings about 65 inches of snow; with the rain, that comes to about 51 inches of water.
On November 14 York Harbor normally reaches 49° and falls to 32°. The record high is 71°, in 1989; the record low 10°, in 1986. The most rain on this date, 1.90 in, fell in 2006.
Normals 1991–2020 and records since 1973 at Greenland, 12 miles southwest. NOAA, through RCC-ACIS.
