The Mount Kisco 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
Mostly sunny; warmer
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Sunny
Sunny
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17° on Nov. 15, 1996, the coldest reading for this week of the year since 1946. Next is 18° in 1967.
Mount Kisco’s center stands about 340 ft above sea level. Within three miles the land runs from 190 ft to 760 ft, a difference of 570 ft: hilly country. The highest named summit within 15 miles is Prospect Hill, about 1,130 ft, 15 miles north.
Under the town center the state geologic map shows Fordham Gneiss, undivided, from the Precambrian to Mesoproterozoic.
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 25×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Gneiss. Age: Precambrian to Mesoproterozoic. About 11 mi of the line.
Gneiss. Age: Precambrian to Mesoproterozoic. About 7 mi of the line.
Gneiss, amphibolite. Age: Precambrian to Mesoproterozoic. About 3 mi of the line.
Marble. Age: Early Cambrian to Early Ordovician, 471 to 542 million years old. About 0.9 mi of the line.
Biotite-gneiss. Age: Precambrian to Mesoproterozoic. About 0.9 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 Mount Kisco reaches New York Harbor and the Atlantic Ocean by way of the Kisco, the Croton and the Hudson: about 50 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Mount Kisco; river miles along the main stem, rounded.
Mount Kisco has a hot-summer humid continental climate. Summer afternoons average 83° in July; winter nights fall to about 23° in January. About 48 inches of rain fall in a normal year.
On November 14 Mount Kisco normally reaches 53° and falls to 37°. The record high is 71°, in 1993; the record low 20°, in 1986. The most rain on this date, 1.92 in, fell in 1972.
Normals 1991–2020 and records since 1946 at Westchester Co Airport, 10 miles south. NOAA, through RCC-ACIS.
