The Junction 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 cloudy
Showers likely; warmer
Mostly cloudy; cooler
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Partly cloudy
94° on Nov. 16, 2025, the hottest reading for this week of the year since 1948. Next is 87° in 1951.
Junction’s center stands about 1,710 ft above sea level. Within three miles the land runs from 1,660 ft to 2,050 ft, a difference of 390 ft: rolling country. The highest named summit within 15 miles is Allison Mountain, about 2,230 ft, 10 miles west-southwest.
Under the town center the state geologic map shows Terrace deposits (sand), from the Pleistocene to Holocene, less than 2.6 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 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 113 million years old. About 11 mi of the line.
Limestone. Age: Early Cretaceous, 100 to 145 million years old. About 7 mi of the line.
Fine-detrital, coarse-detrital. Age: Holocene, less than 12,000 years old. About 5 mi of the line.
Sand. Age: Pleistocene to Holocene, less than 2.6 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 Junction reaches the Gulf of America by way of the North Llano, the Llano and the Colorado: about 510 river miles.
Lakes on the way: Lake Marble Falls and Lake Lyndon B Johnson.
320 miles of the trip are on the Colorado.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Junction; river miles along the main stem, rounded.
Junction has a humid subtropical climate. Summer afternoons average 96° in August; winter nights fall to about 34° in January. About 22 inches of rain fall in a normal year.
On November 14 Junction normally reaches 70° and falls to 43°. The record high is 89°, in 2025; the record low 20°, in 2018. The most rain on this date, 1.10 in, fell in 1958.
Normals 1991–2020 and records since 1948 at Junction Kimble County Airport, here. NOAA, through RCC-ACIS.
