The Bureau of Meteorology has issued warnings for the central west and channel country, central and south western Queensland, the north west and Maranoa and Warrego districts.
A severe weather warning for Central Queensland covering areas from around Mt Isa down to Charleville prompted the bureau to describe it as "very unusual for this typically dry area" with some isolated areas expecting up to 300mm rainfall totals.
Totals in excess of 100mm are forecast over the next 24 hours throughout the state.
Paluma on the North Tropical Coast had received the highest 24 hours totals to Tuesday morning, with gauges hitting 124mm.
Meteorologists have forecast flooding for Queensland's river networks in the coming days with warnings current for the central and western districts and some rivers in the North Tropical Coast and Herbert and Lower Burdekin.
A major flood warning is still ongoing for the Bulloo and Barcoo rivers.
Moderate flood warnings are in place for Barcoo and Georgina Rivers, Cooper Creek and Eyre Creek which crosses into the Northern Territory.
Thunderstorms and rain with heavy falls are expected to continue across Queensland throughout the week into the weekend before contracting, senior meteorologist Angus Hines said.
"Away from these central regions, widespread rainfall totals between 50 and 150 millimetres are expected almost anywhere in the state."
Consistent rainfall in parts of north Queensland comes after the region was battered in February by record-breaking deluge that triggered floods, forced hundreds to evacuate and claimed two lives.
The small town of Ingham in the Hinchinbrook catchment was one of the worst hit, after its substation was inundated following the nearby Herbert River breaking a record set in 1967.
In early March, southeast Queensland and northern NSW bore the brunt of ex-tropical cyclone Alfred that left more than 200,000 people without power.
The cyclone was the first in more than 50 years to hit Queensland's southeast.
Meanwhile, heatwave conditions have continued in parts of Western Australia.
Perth hit a "late season temperature record" on Monday, Mr Hines said, reaching 40.1C.
"Meaning it's never been this hot this far into autumn," he said.
"Perth is looking at four more days of 35 degrees or higher for the remainder of this week."
Carnarvon, Geraldton and Perth Airport also broke late season temperature records.
