About 209,000 customers may have their power turned off this week to mitigate the risk, Pacific Gas & Electric said.
"The possible safety shutdown is planned for varying start times depending on location starting Wednesday night," the company said.
Power outages can affect 15 municipalities in the Sierra Hills and North Bay, including Amador, Butte, Calaveras, El Dorado, Lake, Mendocino, Napa, Nevada, Placer, Plumes, San Mateo, Sierra, Sonoma, Sutter and Yuba, Said PG&E.
Customers will be notified by text, email and automatic phone calls 48 hours in advance.
A combination of high winds, dry grass and dead and dying trees is feeding the risk of fire and therefore the need for possible power outages, PG&E said.
The PG&E announcement comes as firefighters struggle with a busy season of forest fires.
The fire in Little Mountain, San Bernardino County, damaged at least three homes and injured at least one firefighter, San Bernardino County Fire District said.
Another 40 houses are still threatened by fire, which is hard to contain due to high winds and sloping terrain.
Wind conditions in the San Bernardino area are likely to continue until Tuesday, the fire department said.
On Monday, the Pacific Palisades fire set fire to 40 acres, said Los Angeles fire chief Patrick Butler.
Many Californians are dealing with the reality that forest fires can occur at any time.
"You go into denial right away, saying, 'I hope that's not what I think it is,'" said Charlie Lyons after noticing the clouds of smoke during a walk on Monday. "We're in a terrible cycle right now."
His daughter, also named Charlie, said she feared the worst.
"I immediately started packing my valuables," said Charlie Lyons, 22. "My friend last year lost her home in Malibu. You can't predict what Mother Nature will do."
CNN's Christina Maxouris, Paul Vercammen and Joe Sutton contributed to this report.