We may be mid-way through Spring, that doesn't mean Winter has forgotten us, as many in southeastern Australia have found out in recent days.  

As we recently reported here (https://www.weatherzone.com.au/news/adelaides-coldest-morning-this-late-in-spring-since-1946/1584357), an unseasonably cold spell affected the southeast between Wednesday and Friday this week, with a cold front bringing a winter-like airmass to the region. 

Whilst the southern states of South Australia, Victoria and Tasmania bore the brunt of this, those further north didn't escape completely unscathed.

Temperatures only managed to climb to 16.4 degrees at Sydney's Observatory Hill on Thursday, nearly 6 degrees below the average, as the cold airmass combined with cool southerly winds, bringing the city's coldest October day since mid-October 2021.

To put this into perspective, the average maximum temperature for Sydney in July is 16.5 degrees so if you were wondering whether that extra jumper was justified, it was – especially given that with the addition of those cold southerly winds, it felt more like 9 degrees for much of the afternoon.

Winter temperatures however will be a thing of the past, again, as soon enough, a hot airmass is dragged down ahead of low-pressure trough over the next couple of days. By Monday temperatures will have gone near the city's July average to around 6-8 degrees above the October average, with the mercury forecast to hit the low 30's.

850hPa temperatures on Monday 30th October showing the tongue of heat extending across the Sydney region 

Unfortunately for those that enjoy these hot days, another cool change is due around late morning on Tuesday for Sydney, with temperatures then set to briefly dip below average again into Wednesday.