“Settled weather conditions in #NSW over the past few days is forecast to change tomorrow, with a cold front and trough bringing the first significant cold snap of the season and temperatures forecast to decrease,’ BOM NSW said.
In Sydney, a temperature of 24C on Tuesday will fall to 7C in the early hours of Saturday morning.
While the alpine regions will hit a low of 1C on Saturday, with the first snowfall also predicted.
Meanwhile, Victorians were told by the BOM to enjoy the mild weather while they can.
“Enjoy the mild #VicWeather before the dark side of Autumn creeps over the State from Wed with the passage of a (very) cold front which will see temps <13°C in parts for Thurs & Fri,” BOM Victoria said.
The Bureau has also warned small hail and snow in areas down to 900m is possible.
The BOM has also warned those in the ACT that temperature could drop as much as 8C over the coming days.
Those in the east of Queensland will be spared the cold snap but will likely see thunderstorms later in the week.
“A chance of thunderstorms in the southern interior and central #QLD, extending east later in the week. No severe thunderstorms expected,” BOM QLD said.