The Holt 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.
Sunny
Mostly sunny; warmer
Mostly sunny
Partly cloudy
Partly cloudy
Partly cloudy
Showers likely
72° on Nov. 14, 1999, the hottest reading for this week of the year since 1952. Next is 72° in 2012.
Holt’s center stands about 1,140 ft above sea level. Within three miles the land runs from 790 ft to 1,260 ft, a difference of 470 ft: hilly country.
Under the town center the state geologic map shows Lower Ordovician (dolostone, sandstone), from the Early Ordovician, 471 to 487 million 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 31×. 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, sandstone. Age: Early Ordovician, 471 to 487 million years old. About 14 mi of the line.
Limestone, dolostone. Age: Late Ordovician, 445 to 459 million years old. About 6 mi of the line.
Sandstone, siltstone, shale. Age: Cambrian, 487 to 497 million years old. About 3 mi of the line.
Shale, limestone, sandstone. Age: Middle Ordovician to Late Ordovician, 445 to 471 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 Holt reaches the Gulf of America by way of Gribben Creek, the Root and the Mississippi: about 1,720 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Holt; river miles along the main stem, rounded.
Holt has a warm-summer humid continental climate. Summer afternoons average 81° in July; winter nights fall to about 4° in January. A normal year brings about 42 inches of snow; with the rain, that comes to about 37 inches of water.
On November 14 Holt normally reaches 43° and falls to 24°. The record high is 72°, in 1999; the record low −4°, in 1959. The most rain on this date, 0.30 in, fell in 2010.
Normals 1991–2020 and records since 1952 at Preston, 9 miles west-southwest, 210 ft lower. NOAA, through RCC-ACIS.
