The fire has destroyed 48 homes near Cabazon, including 26 residences, 1 commercial building and 21 outbuildings. Eight other structures were damaged by flames.
Since the blaze erupted Wednesday afternoon, it had grown to 20,292 acres. At its peak, evacuations were ordered on 1,500 homes.
Eleven firefighters and one civilian have been injured. Some 1,400 firefighters on the lines this weekend made major progress after focusing on the hot spots.
The Pacific Crest, Marion Mountain and Seven Pines hiking trails remain closed. Marion Mountain, Fern Basin, Dark Canyon, Black Mountain and Boulder Basin campgrounds are also closed.
The cause of the fire remains under investigation.