The Humboldt 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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66° on Nov. 13, 1999, the hottest reading for this week of the year since 1961. Next is 65° in 2001.
Humboldt’s center stands about 1,520 ft above sea level. Within three miles the land runs from 1,450 ft to 1,590 ft, a difference of 140 ft: gently rolling country. The highest named summit within 15 miles is Green Hills, about 1,750 ft, 11 miles east.
Under the town center the state geologic map shows Migmatitic gneiss and amphibolite (Late to Early Archean) (gneiss, amphibolite, migmatite), from the Paleoarchean to Neoarchean, 2.5 to 3.6 billion years old.
The section below crosses 3 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 41×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Gneiss, amphibolite, migmatite. Age: Paleoarchean to Neoarchean, 2.5 to 3.6 billion years old. About 23 mi of the line.
Quartzite, slate, banded-iron-formation. Age: Paleoproterozoic, 1.6 to 2.5 billion years old. About 0.9 mi of the line.
Mixed-clastic, metagraywacke. Age: Paleoproterozoic, 1.6 to 2.5 billion 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.
A raindrop that lands in Humboldt reaches Lake Michigan by way of Gambles Creek, the Michigamme and the Menominee: about 170 river miles. From there it moves on through the Great Lakes, over Niagara Falls and down the St. Lawrence to the Atlantic.
Lake on the way: Michigamme Reservoir.
120 miles of the trip are on the Menominee.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Humboldt; river miles along the main stem, rounded.
Humboldt has a warm-summer humid continental climate. Summer afternoons average 76° in July; winter nights fall to about 7° in January. A normal year brings about 197 inches of snow; with the rain, that comes to about 37 inches of water.
On November 14 Humboldt normally reaches 38° and falls to 25°. The record high is 59°, in 2001; the record low 5°, in 1995. The most rain on this date, 0.51 in, fell in 2020.
Normals 1991–2020 and records since 1961 from the Marquette County Area threaded record (Marquette Wfo, 21 miles east-northeast, 100 ft lower). NOAA, through RCC-ACIS.
