The Latest: Cooler weather helps firefighters' progress on unruly Northern California wildfire

Fire engulfs a juniper tree near Roosevelt, Wash., Wednesday, Aug. 5, 2015. An entire small town in south central Washington remained under an evacuation order because of a fast-growing wildfire. (AP Photo/Don Ryan) (The Associated Press)

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Fire-blackened hills above a residence in Roosevelt, Wash., shows how close an early morning wildfire came to the town, Wednesday, Aug. 5, 2015. Residents, who evacuated overnight, have returned to their homes and the fire is headed away for the town. (AP Photo/Don Ryan) (The Associated Press)

A crew works on a damaged line as blackened ground shows how close an overnight wildfire came to the town of Roosevelt, Wash., Wednesday, Aug. 5, 2015. Residents evacuated overnight but have returned to their homes and the fire is headed away from the town. (AP Photo/Don Ryan) (The Associated Press)

LOWER LAKE, Calif. – The latest on wildfires burning in California (all times local):

7:30 a.m.

Thousands of firefighters battling an unruly Northern California wildfire were aided by cooler temperatures and higher humidity.

But the fire is still less than a quarter contained Wednesday.

Firefighting officials said crews made some progress Tuesday with help from light rain. The blaze has charred 106 square miles and it isn't expected to be completely contained until at least Monday.

The fire is burning about 110 miles north of San Francisco along rugged, parched terrain in Lake, Yolo and Colusa counties.

The cause of the fire is under investigation. Since it started last week, more than 13,000 people were required or urged to leave their homes, vacation cabins and campsites.