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.
When are the summer holidays in Texas? There are only three Summer holidays in the state of Texas. June  19th is Emancipation Day, July 4th is Independence Day and August  27th is Lyndon Baines Johnson Day.he Rio grande valley between el paso and McAllen sees the hottest weather in the state with days above 120 deg F in the summer. This area is in the middle of the desert. However the months of November through May Texas has arguabl the best weather in the nation. Lows in the 40s heating up to mid 70s during the day.