Local Time, Weather & Live Webcams in Signal Mountain, Tennessee, United States

SIGNAL MOUNTAIN TIME

6:3015PM

Monday

October 19, 2026

12369

America/New York

Temperature

18°C

☀️

Conditions

Clear sky

Hum

39%

Wind

6.5 mph

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Tennessee CURIO • #1 OF 3

The Lost Sea in Sweetwater

Located inside Craighead Caverns near Sweetwater, the Lost Sea is the largest non-subglacial underground lake in North America, covering over four acres nearly 140 feet beneath the surface of the earth.

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