Leftover storm problems Monday closed two west Sonoma County schools and more than two dozen roads while PG&E crews swarmed areas where customers remained without power.
By Monday night, repairs had cut the number of customers without power to about 551 countywide, mostly in the west county.
As of 8:35 p.m. Monday, 426 customers were out in Occidental, 62 in Sebastopol, 22 in Cazadero and 11 in Santa Rosa. PG&E said most would have power by this morning.
A new, milder storm began rolling across parts of the North Coast on Monday night, with rain expected throughout today and into Wednesday morning.
Accuweather predicted rainfall would total about an inch in Santa Rosa, far less than the total of 6.44 inches that fell in last week's storms.
During those storms, thousands of people were without power for more than 30 hours, meaning no heat and light in most cases and no water for those on wells.
"It was pretty miserable," said Rose Matthews, whose rural Bennett Valley home was without power from about 5:30 a.m. Sunday to 1:30 p.m. Monday.
Sonoma County suffered the most blackouts in the North Bay from the last of three fierce storms that brought a deluge of rain and gusting winds to much of Northern California.
The storm that raged from Saturday night into Sunday morning left 20,000 county homes and businesses in the dark.
"We're bringing crews up to Sonoma as it was one of the areas hit the hardest," PG&E spokeswoman Brittany McKannay said.
During the three storms, McKannay said, a total of 737,170 PG&E customers in Northern and Central California lost power.
In Mendocino and Lake counties, 448 customers still were without power Monday morning but that dropped to 92 by 8:35 p.m. The bulk had been in Fort Bragg, Philo and Elk.
Near Occidental, officials canceled Monday's classes at Harmony Elementary and Salmon Creek schools because nearly 1,000 area residents were without electricity.