The Bureau of Meteorology has warned that a cold spell is on the way for south-eastern Australia, with another one not far behind for Western Australia.
The blast of Antarctic air could also bring low levels of snow to the slopes of Tasmania, Victoria and New South Wales.
The prolonged cold conditions are set to remain well into next week causing below-average temperatures and southerly winds.
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Meteorology service Weatherzone said that after the cold front rolls over Tasmania, Victoria, and New South Wales, a high-pressure system could linger over South Australia.
That could cause at least four days of cold weather and southerly winds, they said.
Daytime temperatures across the south-eastern states could be two to three degrees below average for several days.
Melbourne is forecast to remain somewhere between 12 to 13 degrees between Saturday and Thursday next week, which is around one to two degrees below average.
Sydney is likewise forecast to stay a few degrees below average from Sunday to Thursday next week.
This weekend Adelaide's temperature could be two-to-three degrees below average.
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Hobart's temperature could peak at just twelve degrees over the next four days.
From next week, Brisbane could also have a run of days nearly two degrees below average.
Brisbane's overnight temperatures from Sunday night will be around 8 degrees, Weatherzone forecasted.
In addition the temperature could feel much colder than it actually is, thanks to those strong southerly winds.