Power has been restored to most of the 30,000 homes and businesses that were affected by wild weather that lashed Sydney on Friday afternoon.
The worst-affected areas were in the north-west at Ryde, Gladesville and Hunter's Hill, but only 1,500 homes remain without power.
Emergency services have received more than 1,000 calls for help, and winds of up to 100 kilometres per hour have been recorded.
State Emergency Service spokeswoman Erin Pogmore says downed trees and powerlines have caused widespread damage.
"We still do have about 590 outstanding tasks so crews will be working throughout the weekend to get these cleared up," she said.
"Most of those (requests)0 have been for trees down and roof damage and we have had crews out that will be continuing throughout the weekend to take care of those jobs."
Meanwhile, firefighters are working to contain a bushfire, which has closed the F6 Freeway and the Princes Highway between Wollongong and Sydney.
The blaze has burnt more than 240 hectares of land between Bulli Tops and Maddens Plains.
About 80 fire fighters are building containment lines to make sure it does not affect properties near Helensburgh.
New South Wales Rural Fire Service spokesman Brendan Doyle there were some close calls.
"There was about 5 to 6 homes that were under threat. We have numerous resources on the ground which has eased that threat," he said.
Mr Doyle says fire services would liaise with residents through out the night.
One lane on the F6 has been reopened; however, the freeway will close intermittently throughout the night.
Downed trees and powerlines added a dangerous element to Friday evening's peak hour traffic.
State Emergency Service spokeswoman Becky Gollings is warning motorists to be careful throughout the night.
"We're just reminding people to take it easy if they are out on the road, drive to the conditions," she said.
Public transport has also been affected, while at Sydney's Airport, domestic flights were running up to an hour late.
Earlier on Friday a school was evacuated on Sydney's northern beaches after strong winds blew the roof off one of the buildings.
One of the boys at St Paul's Catholic College, in Manly, suffered minor injuries.
Annie Carrette from the Broken Bay Diocese says students will have a long weekend because of the damage.
She says the school will definitely be closed on Monday.
"It is quite significant, although we are looking to re-open the college perhaps next Tuesday," she said.
Weather forecaster Jake Phillips issued a warning about the cool and blustery conditions.
"It's going to be quite breezy, as it is already, and it's going to make things feel a lot colder than they actually are," he said.
"For example, at the current time our temperatures around Sydney are generally between about 11 and 13 degrees, but with all that wind around the apparent temperature feels more like about four or five degrees.
"So heading for a maximum of 15 or 16, but it really won't feel like it. If you're out in the wind it's going to feel quite cold indeed."
At Kensington, the city's east, city-bound lanes on Anzac Parade was closed to traffic because of police concerns about the stability of scaffolding on a building site.
Fire brigade Superintendent Tom Cooper says some of the structure came down.
"We've got a partial building collapse there," he said.
"It's actually a steel structure on top of a building and it's come down on the western side of the building so as a precaution firefighters have closed Anzac Parade.
"Traffic police are in attendance there and they've set up a 50 metre exclusion zone."
Meanwhile as Little Manly, three boats have come off their moorings and washed onto the beach.
© ABC 2012
17:01 EST Sydney's offshore Sea Surface Temperatures (SST's) have remained above 21 degrees for the last four days.