The Hart's Location 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.
75° on Nov. 11, 2020, the hottest reading for this week of the year since 1930. Next is 71° in 2022.
Hart's Location’s center stands about 2,150 ft above sea level. Within three miles the land runs from 1,030 ft to 3,560 ft, a difference of 2,530 ft: mountain country. The highest named summit within 15 miles is Mount Washington, about 6,260 ft, 10 miles north-northeast.
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 4×. 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. Age: Silurian, 434 to 445 million years old. About 6 mi of the line.
Granodiorite. Age: Early Devonian, 394 to 422 million years old. About 5 mi of the line.
Granite. Age: Middle Jurassic to Late Jurassic, 145 to 175 million years old. About 4 mi of the line.
Metagraywacke. Age: Early Devonian, 410 to 414 million years old. About 3 mi of the line.
Migmatite. Age: Silurian to Devonian, 359 to 445 million years old. About 3 mi of the line.
Granite. Age: Early Jurassic to Middle Jurassic, 164 to 202 million years old. About 3 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 Hart's Location reaches the Atlantic Ocean by way of the Saco: about 130 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Hart's Location; river miles along the main stem, rounded.
Hart's Location has a warm-summer humid continental climate. Summer afternoons average 75° in July; winter nights fall to about 6° in January. A normal year brings about 136 inches of snow; with the rain, that comes to about 67 inches of water.
On November 14 Hart's Location normally reaches 42° and falls to 25°. The record high is 60°, in 2010; the record low 4°, in 2019. The most rain on this date, 2.37 in, fell in 1937.
Normals 1991–2020 and records since 1930 at Pinkham Notch, 10 miles northeast, 120 ft lower. NOAA, through RCC-ACIS.