The Arthur 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.
79° on Nov. 12, 2005, the hottest reading for this week of the year since 1929. Next is 79° in 2025.
Arthur’s center stands about 3,650 ft above sea level. Within three miles the land runs from 3,610 ft to 3,860 ft, a difference of 250 ft: rolling country. The highest named summit within 15 miles is Bear Hill, about 3,890 ft, 12 miles south-southwest.
Under the town center the state geologic map shows Ogallala Group or Formation (siltstone-mudstone, conglomerate-sandstone), from the Miocene, 5.3 to 23 million years old.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 38×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Siltstone-mudstone, conglomerate-sandstone. Age: Miocene, 5.3 to 23 million years old. About 24 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.
Arthur has a dry-winter hot-summer continental climate. Summer afternoons average 88° in July; winter nights fall to about 14° in January. A normal year brings about 33 inches of snow; with the rain, that comes to about 21 inches of water.
On November 14 Arthur normally reaches 51° and falls to 24°. The record high is 77°, in 1999; the record low −10°, in 1940. The most rain on this date, 0.08 in, fell in 1968.
Normals 1991–2020 and records since 1929 at Arthur, here. NOAA, through RCC-ACIS.