The western suburbs collected much less rain, although 20mm fell in places such as Penrith and will bring some relief to parched parks.
The relief will also be in the temperatures, with the region having a mild day in the mid-20s before the mercury climbs towards the high-30s again by the weekend. Penrith is forecast to reach 39 degrees on Sunday, the bureau said.
Coastal suburbs will likely enjoy more moderate conditions with temperatures kept to about 30-33 degrees for the three days from Saturday, according to bureau forecasts.
According to Weatherzone, Observatory Hill has not had a weekend with both days over 30 degrees for a year, while Penrith has had nine – including two above 40 degrees.
"Some parts of NSW will likely have their warmest March day in three or four years," Mr Dutschke said.
The fire risks will likely be more severe in Victoria over the weekend.
A couple of days in the mid-30s for most of the state will be broken by a gusty wind change on Sunday in regions that have been much drier this summer than NSW.
"Given how dry it has been lately, fire danger this weekend has potential to reach 'extreme' in parts of northern South Australia, northern Victoria and western NSW, and 'severe' in other parts of SA, Victoria – including parts of Melbourne,"Mr Dutschke said.
Concerns that a deep low in the Coral Sea may develop into a cyclone for Queensland are probably going to ease.
While winds and rain may batter parts of that state, the clearest impact may be felt from bigger waves along the coast, he said.
La Nina ends
Separately, the Bureau of Meteorology has declared the La Nina pattern in the Pacific to be over, with conditions returning to neutral.
"The weak and short–lived La Nina had relatively little effect on Australian rainfall patterns over the 2017–18 summer," the bureau said.
"However, it may have kept temperatures higher than average in southern parts of the country due to weather patterns being slower moving, and further south than normal."
Weatherzoneis owned by Fairfax Media, publisher of this website.
Peter Hannam is Environment Editor at The Sydney Morning Herald. He covers broad environmental issues ranging from climate change to renewable energy for Fairfax Media.
Morning & Afternoon Newsletter