Multiple towns have exceeded October temperature records on Saturday as the mercury hit more than 40 degrees in parts of the state.
Central Eyre Peninsula town Wudinna hit 41.5 degrees, up from their previous October record of 40.9, and Hindmarsh Island reached 35.6 degrees with a previous record of 34.7 degrees.
And despite wind gusts of 60km/h, Cleve reached a high of 39.7 degrees, above their 39.5 degree record.
But things will cool off toward the end of the week, and Bureau of Meteorology duty forecaster Naomi Benger said most areas in the state would drop around 18 degrees on Sunday, not reaching much higher than 25 degrees for the rest of the week.
“This time of the year it’s so dynamic, it’s very hard to pinpoint what will happen in a week’s time,” she said.
The months ahead are looking drier than average too, and Ms Benger said climate drivers at the moment are “very worrying”.
“There’s a significant chance of lower than average rainfall for pretty much all of Australia in October and November,” she said.
There is an 80 per cent chance of the state exceeding maximum temperatures on record for the rest of the month of October.