The Dahlgren 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 sunny
Mostly sunny; warmer
Partly cloudy
Partly cloudy
Partly cloudy
Partly cloudy
Showers likely
1° on Nov. 15, 2014, the coldest reading for this week of the year since 1996. Next is 2° in 2019.
Dahlgren’s center stands about 970 ft above sea level. Within three miles the land runs from 740 ft to 1,020 ft, a difference of 280 ft: rolling country.
Under the town center the state geologic map shows Upper Cambrian (sandstone, siltstone, shale), from the Cambrian, 487 to 497 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 54×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sandstone, siltstone, shale. Age: Cambrian, 487 to 497 million years old. About 20 mi of the line.
Sandstone, siltstone, shale. Age: Middle Cambrian to Cambrian, 487 to 521 million years old. About 4 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.
A raindrop that lands in Dahlgren reaches the Gulf of America by way of Carver Creek, the Minnesota and the Mississippi: about 1,860 river miles.
Lake on the way: Lake Pepin.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Dahlgren; river miles along the main stem, rounded.
Dahlgren has a hot-summer humid continental climate. Summer afternoons average 82° in July; winter nights fall to about 6° in January. A normal year brings about 55 inches of snow; with the rain, that comes to about 33 inches of water.
On November 14 Dahlgren normally reaches 41° and falls to 26°. The record high is 71°, in 2025; the record low 4°, in 2014. The most rain on this date, 0.72 in, fell in 2010.
Normals 1991–2020 and records since 1996 at Chanhassen Wsfo, 8 miles northeast. NOAA, through RCC-ACIS.
