The search for four-year-old Gus is expected to begin early this morning in South Australia's Mid North amid forecast hot and windy conditions.

Gus disappeared on the evening of Saturday, September 27, after police said he was last seen playing in sand outside a homestead on his family's isolated sheep station, about 40 kilometres south of Yunta.

Police said the renewed search, which began on Tuesday , has so far yielded "no new evidence", but was expected to continue from sunrise until noon today, as temperatures in the area were tipped to soar to 36 degrees.

"More than 100 search team members, including SA Police, ADF members and SES volunteers, have each been walking between 20 and 25 kilometres each day in hot, harsh conditions," a statement on Wednesday afternoon said.

Former Vi

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