The Grosse Pointe 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.
Mostly cloudy
Partly cloudy
Mostly sunny
Sunny
Mostly sunny
Partly cloudy
Partly cloudy
74° on Nov. 11, 2020, the hottest reading for this week of the year since 1950. Next is 70° in 1964.
Grosse Pointe’s center stands about 600 ft above sea level. Within three miles the land runs from 570 ft to 630 ft, a difference of 60 ft: gently rolling country.
Under the town center the state geologic map shows Antrim Shale (black-shale), from the Late Devonian, 359 to 384 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 64×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Limestone. Age: Middle Devonian, 384 to 394 million years old. About 6 mi of the line.
Black-shale. Age: Late Devonian, 359 to 384 million years old. About 6 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 Grosse Pointe runs straight into Lake St. Clair. From there it moves on through the Great Lakes, over Niagara Falls and down the St. Lawrence to the Atlantic.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Grosse Pointe; river miles along the main stem, rounded.
Grosse Pointe has a hot-summer humid continental climate. Summer afternoons average 82° in July; winter nights fall to about 17° in January. A normal year brings about 28 inches of snow; with the rain, that comes to about 36 inches of water.
On November 14 Grosse Pointe normally reaches 48° and falls to 32°. The record high is 68°, in 1989; the record low 10°, in 2019. The most rain on this date, 1.10 in, fell in 1972.
Normals 1991–2020 and records since 1950 at Grosse Pointe Farms, here. NOAA, through RCC-ACIS.
