There was some welcome relief last month when "widespread (and)… significant rainfall" was recorded in parts of New South Wales, the state government said in its seasonal update late Friday.
"We need more significant widespread rainfall in the coming weeks and months for agricultural recovery to commence and farmland to return to a productive state."
Clark warned that if dry conditions continued instead, "we would see an increased intensification of the drought".
In neighbouring Queensland, the government said last week that 57.4% of the state remains drought-affected.
The update came as Major General Stephen Day – appointed to the newly created role of national drought co-ordinator – said his focus was to improve fundraising efforts for farmers.
He told Sydney’s Sydney Telegraph there was a "lack of co-ordination and coherence to all that’s going on".
"That means there are some gaps, that means there are some overlaps, that means there are some inefficiencies," he said ahead of an planned meeting with some of the major charities raising drought funds.
"I think if we can look at this as a team sport, we’ll have a better effect."
While droughts are not uncommon in Australia, the length and severity of the dry conditions have placed enormous strain on farmers in the eastern states.
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