Just two days after copping half a month's worth of rain, Sydneysiders are set to be hit with another heatwave.
Temperatures are forecast to soar past 34C in parts of the city's west on Thursday while the city will remain cooler at 29C.
By Friday, the mercury is tipped to rise to 35C in the city and 40C in the west.
The sizzling temperatures, expected to last through the weekend, comes after thunderstorms swept through Sydney and parts of NSW on Tuesday, causing flash flooding, property damage, several flood rescues and evacuations.
Farmer Cameron Cox, 22, was killed after being struck by lightning while checking livestock at a family property in the state's central west during a freak storm in the area.
The storms also caused structural damage to dozens of homes across Sydney, while a sinkhole opened up on Wednesday in the harbourside suburb of Point Piper, where Prime Minister Malcolm Turnbull lives.
Tuesday's showers measured half the average rainfall for February while an estimated 25mm worth of rain alone fell over a half-hour period early on Wednesday.
The rollercoaster summer weather comes after Sydney recorded its hottest January ever with the average maximum temperature last month at 29.6C.