Temperatures are soaring in South Australia today as eastern parts of the country brace for another round of heat.
Oppressive heat is gripping most of South Australia today and will again tomorrow, thanks to a stream of northerly winds ahead of an approaching front.
Temperature are forecast to reach 40 degrees or more in Adelaide, Keith, Lameroo, Naracoorte, Cleve, Ceduna, Roseworthy and Port Augusta this afternoon and up to 44 degrees in Oak Valley. Most areas should be a degree or two hotter on Saturday.
While the hot days will be a struggle, tonight will be noticeably uncomfortable as well.
Adelaide will remain near 30 degrees well into the evening and should only drop to 28 overnight. This would make it the city's warmest night since 2015.
Nights this warm are more uncommon as days this hot. Adelaide typically sees three to four days over 40 degrees each year and only one or two nights above 28 degrees.
A relatively weak cold front will bring relief from the west during Saturday, reaching Ceduna during the day, Adelaide in the evening and Renmark overnight.
The hot air mass will not be confined to South Australia.
Temperatures will also climb into the forties across northwest Victoria and the high thirties in the state's southwest from today. Heat will spread over the state this weekend before the cool change arrives on Sunday.
Melbourne is tipped to climb into the thirties from Friday to Sunday and could get within a few degrees of 40 on Saturday. Saturday night could remain above 25 degrees for the third time in the last two years.
Launceston in northern Tasmania could get to 28 degrees or higher for the next four days, the warmest such spell since last summer. Hobart is forecast to reach 28-29 degrees on Saturday and Sunday, which would make it the city's warmest weekend in three years.
The pool of heat will slowly move through New South Wales and Queensland from the weekend and into next week. While manly inland locations will experience heatwave conditions, sea breezes should limit heating for some coastal areas.
Inland centres such as Dubbo and Charleville are forecast to reach 37-40 degrees from Monday to Thursday, around three to eight degrees above average.
Western Sydney should manage to reach the mid-to-high thirties from Sunday to Wednesday, although the city and eastern suburbs will be a bit cooler from winds blowing off the Tasman Sea.
Brisbane will warm up during the middle of next week and could be sweating into the high thirties again by Thursday, probably over 40 degrees a bit further west.
Advice for coping with extreme heat can be found through your doctor, local health authorities or on your state's public health website.
© Weatherzone 2017
12:29 AEDT Last night was warmer than any official minimum temperature previously recorded in Sydney, but it wasn't a new record.