Boise National Forest officials counted four new fire starts Monday.
Lightning started three fires near Scott Mountain, and a fourth south of Idaho City was human-caused, officials said.
All three lightning fires have been contained. The human-caused fire is uncontained but has stayed small, officials said. Crews are working to contain that fire.
Firefighters are also continuing to make good progress on the Little Queens Fire, particularly on the southern flank nearest Atlanta.
The fire is at 23,273 acres and 15 percent contained. Crews will perform burnouts and use helicopters to drop water onto the flames Tuesday.
Fire managers released two structure protection engines from Atlanta Monday; the remaining three will leave Tuesday.
Wet weather may also help firefighters efforts. There is a 20 percent chance of rain in the area Tuesday, which increases to a 40 percent chance on Wednesday.