The St. Joe 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.
87° on Nov. 11, 1989, the hottest reading for this week of the year since 1924. Next is 85° in 1999.
St. Joe’s center stands about 840 ft above sea level. Within three miles the land runs from 670 ft to 1,260 ft, a difference of 590 ft: hilly country. The highest named summit within 15 miles is Iceledo Mountain, about 2,220 ft, 14 miles southwest.
Under the town center the state geologic map shows Pitkin Limestone, Fayetteville Shale (including the Wedington Sandstone member), and Batesville Sandstone (including the Hindsville Limestone Member) (sandstone, shale, limestone), from the Carboniferous, 324 to 359 million years old.
The section below crosses 6 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 14×. 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: Carboniferous, 324 to 359 million years old. About 9 mi of the line.
Sandstone, dolostone. Age: Middle Ordovician, 459 to 471 million years old. About 6 mi of the line.
Sandstone, shale, limestone. Age: Carboniferous, 324 to 359 million years old. About 5 mi of the line.
Shale, sandstone. Age: Carboniferous, 299 to 324 million years old. About 3 mi of the line.
Sandstone. Age: Carboniferous, 299 to 324 million years old. About 2 mi of the line.
Limestone. Age: Middle Ordovician to Late Ordovician, 445 to 471 million years old. About 0.4 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 St. Joe reaches the Gulf of America by way of Mill Creek, the Buffalo, the White River and the Mississippi: about 1,070 river miles.
620 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of St. Joe; river miles along the main stem, rounded.
St. Joe has a humid subtropical climate. Summer afternoons average 90° in August; winter nights fall to about 24° in January. About 48 inches of rain fall in a normal year, with about 4 inches of snow.
On November 14 St. Joe normally reaches 61° and falls to 35°. The record high is 83°, in 1999; the record low 5°, in 1940. The most rain on this date, 2.15 in, fell in 1926.
Normals 1991–2020 and records since 1924 at Gilbert, 5 miles east-southeast, 230 ft lower. NOAA, through RCC-ACIS.