The population was 5,586 at the 2000 census and 5,764 at the 2010 census. Sweetwater is the home of the Craighead Caverns which contains the Lost Sea, the United States' largest underground lake.
2011, The HOTTEST Year for Texas. Tweet. For most of Texas, 2011 is now the hottest year on record while city after city shatter records of 100 degree days. Texas is in a severe drought, only averaging about 1 inch of rain during July, and in many areas things are becoming desperate.
The record high temperature for Texas is 120Â° F, set in 1936 and tied in 1994. During unusually warm summers, the temperature occasionally exceeds 110Â° F, as it did for 10 consecutive days in Wichita Falls in 1980.