FORESTHILL, Placer County (CBS / AP) — Lower temperatures and an increase in humidity were a welcome relief to firefighters battling a wildfire that has destroyed one home and forced evacuations from dozens of others in Placer County.

State fire officials say the so-called Robbers Fire is now 45 percent contained after burning about four square miles.

Despite improved weather conditions and the progress firefighters are making in surrounding the blaze, evacuations remain in place, with homes near the community of Foresthill still threatened.

Twelve firefighters have been injured battling the fire, and about 2,200 personnel are currently on scene.

Another blaze to the northwest, the Mill Fire, is now 75 percent contained after charring about 46 square miles of the Mendocino National Forest.

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