The Calais 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.
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65° on Nov. 14, 2005, the hottest reading for this week of the year since 1994. Next is 65° in 2012.
Calais’s center stands about 220 ft above sea level. Within three miles the land runs from 10 ft to 390 ft, a difference of 380 ft: rolling country. Open water lies within three miles. The highest named summit within 15 miles is Breakneck Mountain, about 650 ft, 15 miles west-southwest.
Under the town center the state geologic map shows Devonian gabbro/diorite/ultramafic rocks - quartz diorite, from the Devonian, 359 to 422 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 49×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Age: Devonian, 359 to 422 million years old. About 4 mi of the line.
Granite. Age: Devonian, 359 to 422 million years old. About 3 mi of the line.
Granite. Age: Devonian, 359 to 422 million years old. About 2 mi of the line.
Sandstone. Age: Devonian, 359 to 422 million years old. About 2 mi of the line.
Gabbro, diorite, ultramafic. Age: Devonian, 359 to 422 million years old. About 1 mi of the line.
Slate, phyllite. Age: Early Ordovician to Late Ordovician, 445 to 487 million years old. 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 Calais reaches the Atlantic Ocean by way of Beaver Brook and the Saint Croix: about 14 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Calais; river miles along the main stem, rounded.
Calais has a warm-summer humid continental climate. Summer afternoons average 77° in July; winter nights fall to about 11° in January. A normal year brings about 95 inches of snow; with the rain, that comes to about 55 inches of water.
On November 14 Calais normally reaches 46° and falls to 31°. The record high is 65°, in 2005; the record low 15°, in 2019. The most rain on this date, 1.21 in, fell in 2006.
Normals 1991–2020 and records since 1994 at Robbinston, 6 miles southeast, 100 ft lower. NOAA, through RCC-ACIS.
