The Conway 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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77° on Nov. 11, 2020, the hottest reading for this week of the year since 1959. Next is 72° in 2022.
Conway’s center stands about 470 ft above sea level. Within three miles the land runs from 430 ft to 1,120 ft, a difference of 690 ft: hilly country. The highest named summit within 15 miles is Mount Passaconaway, about 4,070 ft, 13 miles west.
Under the town center the state geologic map shows Two-mica granite of the Sebago batholith and Effingham pluton of eastern New Hampshire, from the Carboniferous, 299 to 359 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 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.
Granite. Age: Carboniferous, 299 to 359 million years old. About 7 mi of the line.
Granite. Age: Early Jurassic to Middle Jurassic, 164 to 202 million years old. About 5 mi of the line.
Granodiorite. Age: Devonian, 359 to 422 million years old. About 4 mi of the line.
Quartz-syenite. Age: Jurassic, 145 to 202 million years old. About 4 mi of the line.
Trondhjemite, pegmatite. Age: Devonian to Carboniferous, 324 to 422 million years old. About 3 mi of the line.
Alkali-feldspar-syenite. Age: Cretaceous, 66 to 145 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. 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.
A raindrop that lands in Conway reaches the Atlantic Ocean by way of the Saco: about 95 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Conway; river miles along the main stem, rounded.
Conway has a warm-summer humid continental climate. Summer afternoons average 82° in July; winter nights fall to about 10° in January. A normal year brings about 84 inches of snow; with the rain, that comes to about 50 inches of water.
On November 14 Conway normally reaches 47° and falls to 28°. The record high is 63°, in 1985; the record low 8°, in 1971. The most rain on this date, 0.85 in, fell in 2018.
Normals 1991–2020 and records since 1959 at North Conway, 5 miles north. NOAA, through RCC-ACIS.
