The St. Francisville 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
Chance of showers; warmer
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Mostly sunny; warmer
Mostly sunny
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24° on Nov. 13, 2019, the coldest reading for this week of the year since 1942. Next is 25° in 1950.
St. Francisville’s center stands about 150 ft above sea level. Within three miles the land runs from 20 ft to 230 ft, a difference of 210 ft: rolling country.
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 63×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Silt, clay. Age: Holocene, less than 12,000 years old. About 10 mi of the line.
Clay, silt, sand. Age: Pleistocene, less than 2.6 million years old. About 9 mi of the line.
Clay. Age: Holocene, less than 12,000 years old. About 3 mi of the line.
Clay, silt, sand. Age: Pleistocene, less than 2.6 million 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 St. Francisville reaches the Gulf of America by way of Alligator Bayou, Thompson Creek and the Mississippi: about 280 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of St. Francisville; river miles along the main stem, rounded.
St. Francisville has a humid subtropical climate. Summer afternoons average 92° in July; winter nights fall to about 42° in January. About 58 inches of rain fall in a normal year.
On November 14 St. Francisville normally reaches 71° and falls to 50°. The record high is 89°, in 1951; the record low 29°, in 1975. The most rain on this date, 1.47 in, fell in 1976.
Normals 1991–2020 and records since 1942 at New Roads 5 NE, 4 miles south, 100 ft lower. NOAA, through RCC-ACIS.
