There was no further growth to the Rumsey Gulch fire near Philipsburg overnight, according to the Montana Forest Service.
The fire has burned up about 349 acres in Rumsey and Summer gulches and is about 20 percent contained. The blaze started Monday afternoon about 3 miles southeast of Philipsburg. The cause of the fire was still under investigation Wednesday morning.
Firefighters will continue to work on completing the fire line around the perimeter of the fire Wednesday.
The fire has destroyed five homes and three outbuildings. No injuries have been reported.
The Rumsey Gulch Road is open to local traffic only. Residents have been allowed to return to their homes but should use caution when driving and watch for fire traffic and unsafe trees in the area.