The Avon 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.
Chance of showers
Mostly cloudy
Mostly cloudy
Mostly sunny; warmer
Mostly sunny
Partly cloudy
Partly cloudy
78° on Nov. 11, 2020, the hottest reading for this week of the year since 1895. Next is 76° in 1928.
Avon’s center stands about 640 ft above sea level. Within three miles the land runs from 530 ft to 880 ft, a difference of 350 ft: rolling country. The highest named summit within 15 miles is Turkey Hill, about 1,360 ft, 12 miles south-southeast.
Under the town center the state geologic map shows Onondaga and Bois Blanc Limestones, from the Early Devonian to Middle Devonian, 388 to 410 million years old.
The section below crosses 11 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 21×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Dolostone. Age: Silurian, 422 to 428 million years old. About 6 mi of the line.
Shale. Age: Silurian, 422 to 428 million years old. About 5 mi of the line.
Shale. Age: Middle Devonian, 384 to 388 million years old. About 3 mi of the line.
Limestone. Age: Early Devonian to Middle Devonian, 388 to 410 million years old. About 2 mi of the line.
Shale. Age: Late Devonian, 359 to 384 million years old. About 2 mi of the line.
Shale. Age: Late Devonian, 359 to 384 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. 5 smaller units along the line are not listed.
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 Avon reaches Lake Ontario by way of the Genesee: about 35 river miles. From the lake it goes down the St. Lawrence to the Atlantic.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Avon; river miles along the main stem, rounded.
Avon has a warm-summer humid continental climate. Summer afternoons average 82° in July; winter nights fall to about 16° in January. A normal year brings about 52 inches of snow; with the rain, that comes to about 34 inches of water.
On November 14 Avon normally reaches 49° and falls to 32°. The record high is 73°, in 1902; the record low 0°, in 1905. The most rain on this date, 0.73 in, fell in 1972.
Normals 1991–2020 and records since 1895 at Avon, here. NOAA, through RCC-ACIS.
