The Manchester 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.
Chance of showers
Mostly cloudy
Mostly cloudy
Mostly sunny; warmer
Mostly sunny
Partly cloudy
Partly cloudy
79° on Nov. 11, 2020, the hottest reading for this week of the year since 1942. Next is 73° in 1956.
Manchester’s center stands about 600 ft above sea level. Within three miles the land runs from 550 ft to 740 ft, a difference of 190 ft: gently rolling country. The highest named summit within 15 miles is Oak Mountain, about 1,190 ft, 11 miles west-southwest.
Under the town center the state geologic map shows Akron Dolostone, from the Silurian, 422 to 428 million years old.
The section below crosses 9 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.
Shale. Age: Silurian, 422 to 428 million years old. About 5 mi of the line.
Shale. Age: Silurian, 422 to 428 million years old. About 4 mi of the line.
Shale. Age: Middle Devonian, 384 to 394 million years old. About 4 mi of the line.
Dolostone. Age: Silurian, 422 to 428 million years old. About 3 mi of the line.
Shale. Age: Late Devonian, 359 to 384 million years old. About 3 mi of the line.
Black-shale. Age: Middle Devonian, 388 to 394 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. 3 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 Manchester reaches Lake Ontario by way of the Canandaigua Outlet, the Erie Canal, the Clyde, the Seneca and the Oswego: about 110 river miles. From the lake it goes down the St. Lawrence to the Atlantic.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Manchester; river miles along the main stem, rounded.
Manchester has a hot-summer humid continental climate. Summer afternoons average 82° in July; winter nights fall to about 18° in January. About 35 inches of rain fall in a normal year.
On November 14 Manchester normally reaches 49° and falls to 34°. The record high is 69°, in 1961; the record low 13°, in 1986. The most rain on this date, 0.59 in, fell in 1997.
Normals 1991–2020 and records since 1942 at Canandaigua 3 S, 9 miles south-southwest, 120 ft higher. NOAA, through RCC-ACIS.
