The Herman 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.
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Mostly sunny; warmer
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69° on Nov. 16, 2023, the hottest reading for this week of the year since 1996. Next is 68° in 1999.
Herman’s center stands about 850 ft above sea level. Within three miles the land runs from 690 ft to 940 ft, a difference of 250 ft: rolling country.
Under the town center the state geologic map shows Silurian, undivided (dolostone), from the Silurian, 422 to 445 million years old.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 39×. 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: Silurian, 422 to 445 million years old. About 19 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 Herman reaches Lake Michigan by way of Fisher Creek and the Pigeon: about 15 river miles. 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 Herman; river miles along the main stem, rounded.
Herman has a warm-summer humid continental climate. Summer afternoons average 80° in July; winter nights fall to about 12° in January. About 29 inches of rain fall in a normal year.
On November 14 Herman normally reaches 45° and falls to 29°. The record high is 62°, in 2025; the record low 12°, in 1996. The most rain on this date, 0.18 in, fell in 2024.
Normals 1991–2020 and records since 1996 at Sheboygan County Memorial Airport, 6 miles south. NOAA, through RCC-ACIS.
