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.
Aug. 4 ties with three hot titles in 1949, 1993 and 2005. And inly two years between 1950-1959 reached 100 degrees; seven of the years between 2000-2009 had a high of more than 100. The median or middle date of the hottest day of the year is July 30. The hottest day so far this year is July 8th at 97 degrees, though there's a roughly fifty-fifty chance that we'll beat that this year. However you measure, late July and early August produce the hottest days.