Towns across South Australia have sweltered through temperatures above 45 degrees Celsius with several local records being broken.
Wudinna has recorded the highest temperature in the state so far today with a top of 48.2 while the mercury climbed to 47.6C in Port Augusta, just short of a record.
Whyalla and Tarcoola both reached 47C while new records were set in Cleve and Minnipa with tops above 46C.
In the south east, Mount Gambier equalled its highest temperature with 43C.
Adelaide had its hottest day in four years with the mercury peaking at 45C about 3:40pm.
© ABC 2013
21:10 EDT Firefighters have put out several grass fires around Sydney and warned that any bushfires that develop will be extremely difficult to control, as temperatures are forecast to remain high over the weekend.