The Fredericksburg 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.
Partly cloudy
Showers likely
Mostly cloudy; cooler
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4.26 inches of rain fell in two days, the most for this week of the year since records began in 1896. The next wettest, 4.06 inches, fell in 1902.
Fredericksburg’s center stands about 1,700 ft above sea level. Within three miles the land runs from 1,610 ft to 1,980 ft, a difference of 370 ft: rolling country. The highest named summit within 15 miles is Cherry Mountain, about 2,200 ft, 8 miles north-northwest.
The section below crosses 5 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 28×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Limestone. Age: Early Cretaceous, 100 to 145 million years old. About 14 mi of the line.
Limestone. Age: Early Cretaceous, 100 to 113 million years old. About 6 mi of the line.
Limestone, marlstone. Age: Early Cretaceous, 100 to 145 million years old. About 3 mi of the line.
Limestone, dolostone. Age: Cambrian to Early Ordovician, 471 to 497 million years old. About 1 mi of the line.
Fine-detrital, coarse-detrital. Age: Holocene, less than 12,000 years old. About 1 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 Fredericksburg reaches the Gulf of America by way of Barons Creek, the Pedernales and the Colorado: about 440 river miles.
Lake on the way: Lake Marble Falls.
320 miles of the trip are on the Colorado.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Fredericksburg; river miles along the main stem, rounded.
Fredericksburg has a humid subtropical climate. Summer afternoons average 94° in August; winter nights fall to about 34° in January. About 31 inches of rain fall in a normal year.
On November 14 Fredericksburg normally reaches 68° and falls to 44°. The record high is 86°, in 2007; the record low 23°, in 1940. The most rain on this date, 2.16 in, fell in 2001.
Normals 1991–2020 and records since 1896 at Fredericksburg, 3 miles southwest. NOAA, through RCC-ACIS.
