Nearly 2000 firefighters have been working to contain the blazes - with more than 20 new fires discovered overnight.
The fires of most concern were near Tweed Heads on the far north coast and Bathurst in the central west.
Both of those fires have now been downgraded to 'Watch and Act' and firefighters spent the night strengthening their containment lines in the cooler weather.
Attention is now being turned to fires in the Namoi and Gwydir regions of the state's north west.
About 21 new fires were detected in the area north west of Armidale last night.