The Roberts 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.
Partly cloudy
Mostly sunny; warmer
Partly cloudy
Partly cloudy
Partly cloudy
Partly cloudy
Showers likely
3.24 inches of rain fell in two days, the most for this week of the year since records began in 1918. The next wettest, 2.10 inches, fell in 1940.
Roberts’s center stands about 1,040 ft above sea level. Within three miles the land runs from 960 ft to 1,130 ft, a difference of 170 ft: gently rolling country.
Under the town center the state geologic map shows Ancell Group (sandstone), from the Ordovician, 445 to 487 million years old.
The section below crosses 6 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 32×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Dolostone. Age: Early Ordovician, 471 to 487 million years old. About 15 mi of the line.
Sandstone. Age: Ordovician, 445 to 487 million years old. About 5 mi of the line.
Sandstone. Age: Cambrian, 487 to 542 million years old. About 3 mi of the line.
Dolostone, sandstone. Age: Early Ordovician, 471 to 487 million years old. About 0.6 mi of the line.
Sandstone, siltstone, shale. Age: Middle Cambrian to Cambrian, 487 to 521 million years old. About 0.5 mi of the line.
Shale, limestone, sandstone. Age: Middle Ordovician to Late Ordovician, 445 to 471 million years old. About 0.5 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.
Roberts has a warm-summer humid continental climate. Summer afternoons average 82° in July; winter nights fall to about 4° in January. About 34 inches of rain fall in a normal year.
On November 14 Roberts normally reaches 42° and falls to 24°. The record high is 71°, in 1990; the record low −8°, in 1940. The most rain on this date, 1.09 in, fell in 1951.
Normals 1991–2020 and records since 1918 at River Falls, 9 miles south-southwest, 100 ft lower. NOAA, through RCC-ACIS.
