The Spencer 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
Mostly sunny
Mostly cloudy
Partly cloudy
Partly cloudy; cooler
Showers likely
82° on Nov. 15, 2025, the hottest reading for this week of the year since 1893. Next is 80° in 1953.
Spencer’s center stands about 1,390 ft above sea level. Within three miles the land runs from 1,360 ft to 1,440 ft, a difference of 80 ft: gently rolling country.
Under the town center the state geologic map shows Sioux Quartzite, from the Paleoproterozoic, 1.6 to 2.5 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 63×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Chalk, marlstone, shale. Age: Late Cretaceous, 66 to 100 million years old. About 12 mi of the line.
Quartzite. Age: Paleoproterozoic, 1.6 to 2.5 billion years old. About 11 mi of the line.
Shale. Age: Late Cretaceous, 66 to 100 million years old. About 0.8 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 Spencer reaches the Gulf of America by way of Wolf Creek, the James, the Missouri and the Mississippi: about 2,070 river miles.
1,170 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Spencer; river miles along the main stem, rounded.
Spencer has a hot-summer humid continental climate. Summer afternoons average 84° in July; winter nights fall to about 6° in January. A normal year brings about 36 inches of snow; with the rain, that comes to about 25 inches of water.
On November 14 Spencer normally reaches 44° and falls to 22°. The record high is 73°, in 1953; the record low −21°, in 1959. The most rain on this date, 0.70 in, fell in 2008.
Normals 1991–2020 and records since 1893 at Alexandria, 12 miles west-southwest. NOAA, through RCC-ACIS.
