Rain is expected to lash Adelaide and southern SA. Picture: Weatherzone.
A refreshing shift in weather is heading towards some Aussies, and it's all thanks to an upcoming rain event.
In South Australia, folks have been enduring an early summer heatwave, with temperatures soaring to a scorching 46C in the state's north. Even in Adelaide, down south, it reached a toasty 33C on Thursday, and it's expected to do so again before the weekend.
The Bureau of Meteorology has issued catastrophic fire danger warnings for large parts of SA, citing extremely hot, dry, and unstable conditions coupled with strong to gale-force north-westerly winds.
But relief is in sight for the weekend as a dramatic wet weather event is set to bring heavy rain, severe thunderstorms, and damaging winds.
According to Weatherzone, Adelaide and its surroundings could see seven-day rainfall totals ranging between 100 and 200mm. The most significant impact is likely around the Spencer Gulf's apex.
In Port Augusta, temperatures are forecast to hit the mid-40s on Friday before rain takes over, causing the maximum temperature to drop dramatically to just 20C.
Adelaide is also in for a soaking, with heavy rain anticipated over the weekend and maximum temperatures struggling to reach 20C.
Cool changes are in the forecast for other capital cities as well.
Perth experienced its cool change earlier this week, with a maximum temperature of 26C expected on Friday before warming up to the low-30s next week.
Melbourne is bracing for the peak of the heat on Friday, with a forecasted temperature of 34C and the possibility of a thunderstorm. Rain is expected to bring temperatures down from Saturday, reaching a maximum of 20C.
Sydney's hottest day this week is expected to be Saturday, reaching 39C. A cool change is set for Sunday, with the maximum dropping to 26C and a chance of showers.
Canberra is following a similar pattern, with a forecasted maximum of 37C on Saturday and a drop to 28C on Sunday.
Brisbane, although escaping the worst of the heatwave, will remain pleasantly warm with maximum temperatures between 30C and 32C and minimums ranging from 21C to 22C.
In Darwin, where the wet season brings consistent weather, the maximum temperature is forecasted at 34C every day for the next week, accompanied by showers and possible storms.
Tasmania managed to dodge the heatwave entirely, with Hobart expecting mild maximum temperatures of 18-24C. Mornings will remain cool, with lows ranging from 8C to 18C.