Firefighters in New Jersey and New York were working on Sunday to contain the latest of several recent wildfires in the region, where the first forecast rainfall in weeks was expected to bring little relief to areas experiencing drought conditions.

Propelled by winds, the fire has blazed across 3,000 acres in Passaic County, N.J., and Orange County, N.Y. — about an hour northwest of New York City. As of Sunday evening, it was only 10 percent contained, according to the New Jersey Forest Fire Service.

“We’ve been running our folks ragged,” Bill Donnelly, chief of the Forest Fire Service, said at a news conference on Sunday.

The unseasonably dry conditions in New Jersey and the rough terrain were making the wildfire difficult to extinguish, Chief Donnelly said, adding that the fire was spreading both aboveground and through decaying root systems.

He said that the expected rain would not be sufficient to put out the blaze, which was reported on Saturday after it spread from a forested area in New York State into a remote area near West Milford. But he said that firefighters hoped to contain it by the end of the coming week.