The Union 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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Chance of showers
71° on Nov. 11, 1964, the hottest reading for this week of the year since 1948. Next is 71° in 1999.
Union’s center stands about 880 ft above sea level. Within three miles the land runs from 830 ft to 1,030 ft, a difference of 200 ft: rolling country.
Under the town center the state geologic map shows Wolf River batholith; Wolf River Granite, from the Mesoproterozoic, 1 to 1.6 billion years old.
The section below crosses 4 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 52×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Granite. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 10 mi of the line.
Granite. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 8 mi of the line.
Granite. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 5 mi of the line.
Sandstone. Age: Cambrian, 487 to 542 million years old. About 2 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 Union reaches Lake Michigan by way of the Little Wolf, the Wolf River and the Fox River: about 130 river miles. From there it moves on through the Great Lakes, over Niagara Falls and down the St. Lawrence to the Atlantic.
Lakes on the way: Lake Winnebago 6124, Lake Winneconne and Lake Butte des Morts.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Union; river miles along the main stem, rounded.
Union has a warm-summer humid continental climate. Summer afternoons average 82° in July; winter nights fall to about 7° in January. A normal year brings about 44 inches of snow; with the rain, that comes to about 33 inches of water.
On November 14 Union normally reaches 44° and falls to 26°. The record high is 65°, in 1958; the record low 0°, in 1986. The most rain on this date, 0.45 in, fell in 1957.
Normals 1991–2020 and records since 1948 at Clintonville, 10 miles east-northeast. NOAA, through RCC-ACIS.
