The Winona 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.
Sunny
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Partly cloudy
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Showers likely
71° on Nov. 11, 2022, the hottest reading for this week of the year since 1939. Next is 70° in 1999.
Winona’s center stands about 670 ft above sea level. Within three miles the land runs from 640 ft to 1,220 ft, a difference of 580 ft: hilly country. The highest named summit within 15 miles is Stockton Hill, about 1,220 ft, 4 miles west-southwest.
Under the town center the state geologic map shows Middle and Upper Cambrian (sandstone, siltstone, shale), from the Middle Cambrian to Cambrian, 487 to 521 million years old.
The section below crosses 5 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.
Sandstone. Age: Cambrian, 487 to 542 million years old. About 8 mi of the line.
Sandstone, siltstone, shale. Age: Middle Cambrian to Cambrian, 487 to 521 million years old. About 5 mi of the line.
Dolostone, sandstone. Age: Early Ordovician, 471 to 487 million years old. About 5 mi of the line.
Sandstone, siltstone, shale. Age: Cambrian, 487 to 497 million years old. About 4 mi of the line.
Dolostone. Age: Early Ordovician, 471 to 487 million years old. About 3 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 Winona reaches the Gulf of America by way of the Mississippi: about 1,700 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Winona; river miles along the main stem, rounded.
Winona has a hot-summer humid continental climate. Summer afternoons average 83° in July; winter nights fall to about 8° in January. A normal year brings about 38 inches of snow; with the rain, that comes to about 34 inches of water.
On November 14 Winona normally reaches 44° and falls to 30°. The record high is 70°, in 1999; the record low 3°, in 1996. The most rain on this date, 0.40 in, fell in 2010.
Normals 1991–2020 and records since 1939 at Winona Dam 5 A, 3 miles north-northwest. NOAA, through RCC-ACIS.
