The Rubicon 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.
Mostly sunny
Mostly sunny; warmer
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Chance of showers
72° on Nov. 11, 2022, the hottest reading for this week of the year since 1893. Next is 69° in 1964.
Rubicon’s center stands about 1,020 ft above sea level. Within three miles the land runs from 890 ft to 1,170 ft, a difference of 280 ft: rolling country. The highest named summit within 15 miles is Holy Hill, about 1,350 ft, 9 miles southeast.
Under the town center the state geologic map shows Maquoketa Formation (shale, dolostone), from the Ordovician, 445 to 487 million 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 44×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Shale, dolostone. Age: Ordovician, 445 to 487 million years old. About 15 mi of the line.
Dolostone. Age: Silurian, 422 to 445 million years old. About 6 mi of the line.
Dolostone. Age: Ordovician, 445 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 Rubicon reaches the Gulf of America by way of the Rubicon, the Rock River and the Mississippi: about 1,760 river miles.
Lake on the way: Lake Koshkonong.
1,450 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Rubicon; river miles along the main stem, rounded.
Rubicon has a warm-summer humid continental climate. Summer afternoons average 80° in July; winter nights fall to about 9° in January. A normal year brings about 36 inches of snow; with the rain, that comes to about 34 inches of water.
On November 14 Rubicon normally reaches 44° and falls to 26°. The record high is 69°, in 1999; the record low 5°, in 1995. The most rain on this date, 0.87 in, fell in 1991.
Normals 1991–2020 and records since 1893 at Hartford Wwtp, 2 miles east. NOAA, through RCC-ACIS.
