A crew of 20 RFS volunteers left on Monday night with another group leaving at Tuesday lunch time. Volunteers were expected to stay for three days returning back home on Friday.

The bulk of volunteers were from Queanbeyan and Bungendore brigades with other members from Wamboin and Jerrabomberra, superintendent Tim Carroll said.

"Crews have been helping with blacking out the fire at Wagga," Mr Carroll said.

"The fire at Wagga was burning over 10,000 hectares (as of Tuesday morning) and crews took advantage of milder conditions this week to mop and black out the edge of the fire. It's an enormous project and a lot work was done in those few days."

As well as the Wagga blaze, fires were still burning in Araluen, Tumut, Bathurst and interstate in Adelaide and Victoria.

Mr Carroll said firefighting volunteers were on standby to fill any requests for further assistance.

Last week crews helped to contain a fire off the Kings Highway, Queanbeyan on Thursday, January 16.

The three hectare fire was caused by power lines that had come into contact with trees, Mr Carroll said.

More than 30 firefighters from the NSW and ACT RFS responded to the fire. Two helicopters were also used to contain the fire.

"There were concerns initially that the fire might enter the Kowen Forest hence the response from ground crews and helicopters," Mr Carroll said.

"The firefighters did a tremendous job working in extreme conditions with a good result."

Mr Carroll reminded residents not to be complacent as temperatures were expected to pick up again in the coming week.

"As I understand it conditions are warming up again. We're in the middle of summer and the Bureau of Metrology has predicted three months of hotter and drier weather conditions," Mr Carroll said.

"With large areas of cured grassland there is the real potential for fires to take hold and spread quickly."