The wet weather will hang over Sydney on Saturday, with the chance of a storm threatening to drench the city further after 20-30 millimetres fell across the city from 9am on Friday.
The mid north coast and the Northern Rivers region will continue to endure the brunt of the bad weather, after being lashed by heavy rain and thunderstorms on Friday.
A severe weather warning, including flash flooding, have been issued for both areas, amid forecasts of rainfall totals in excess of 200 millimetres over the weekend.
After 24 hours of steady showers, Sydney is quickly approaching its average June rainfall within the month's first 10 days.
"We are having the most rain we've had since March," Weatherzone meteorologist Jess Miskelly said.
"Average for Sydney for June is 133 millimetres, and we've already had 120 millimetres, not including whatever is falling at the moment."
It will be a cool 17 degrees on Saturday, before warming slightly to 19 degrees on Sunday.
The sun is expected to appear briefly on Sunday morning, as a reprieve hits the city, before showers resume.
Minister for Tourism and Major Events Adam Marshall doesn't expect the forecast to impact the public's strong support for Vivid Sydney festival, as it enters its final week.
"There's still a week left to experience this year's Vivid Sydney festival and while more rain is forecast, it certainly hasn't dampened the enthusiasm of the many visitors who've come to see the city shine with light, music and ideas."
The festival experienced significant interruptions last year due to weather damage, though officials are adamant that the final week of proceedings will continue to be a success, regardless of conditions - though the minister conceded it might be wise to wrap up warm before heading out.
"Vivid Sydney is an all weather event and the festival team works tirelessly to minimise the impact of rain on the light installations and ensure the festival continues to be enjoyed by all," he said.
"We encourage everyone planning a visit to rug up, grab a brolly and come and be part of this special time in the city."
The soggy weather is being caused by a low pressure trough off the mid north coast, which is being fed by south-easterly winds.
"Combined with an unstable atmosphere, we tend to get a lot of rain along the east coast and ranges in that situation," Ms Miskelly said.
While the rain is expected to make driving conditions more precarious, heavy traffic is expected in the northern beaches due to Warringah Road closures.
The demolition of a pedestrian bridge in Frenchs Forest will force Warringah Road to be closed in both directions between Fitzpatrick Avenue and Forest Way from 11pm on Saturday until 5am Monday.
On Sunday, the closure will extend, so that Warringah Road will be closed between Wakehurst Parkway and Eastern Valley Way from 8am until 8pm.
The NSW Transport Management Centre advised motorists to avoid the area and use Mona Vale Road or Pittwater Road instead.
Weatherzone is owned by Fairfax Media, publisher of this website.
The story No end in sight for rain as key Sydney road closed first appeared on The Sydney Morning Herald.