Unseasonable autumn heat grips multiple states

A wave of pre-winter warmth will sweep across southern Australia this week.

Adelaide, Melbourne and Hobart are all facing a run of days above 20 degrees leading into the weekend.

Adelaide's top temperatures will run to 27 or 28 degrees from today until Sunday, when it drops again.

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Melbourne will be slightly cooler but will top out in the mid-20s until next week.

Hobart, too, will run to the low to mid 20 degree range until Monday.

Weatherzone reported these temperatures were solidly above the monthly average for Adelaide (22.2 degrees), Melbourne (20.4 degrees), and Hobart (17.5 degrees).

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"South Australia, Victoria and Tasmania are all being impacted by northerlies circulating anti-clockwise around the (high pressure system), dragging warm air southwards from the interior of the continent," Weatherzone said.

"This pattern will remain in place for several days as the high drifts east."

Dry conditions in those areas are also expected for the rest of the week.

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