The high winds that led to an unprecedented power shutdown have blown through the Bay Area, reducing the fire danger and leaving behind bone-dry weather with temperatures that will drop over the weekend.

Light offshore breezes were still flowing offshore Friday, but the gales that swept across Bay Area hills and mountains have disappeared. Mount Saint Helena, which reported gusts of 76 mph on Thursday, had winds peaking at just 20 mph by morning, according to National Weather Service meteorologist Spencer Tangen.

As of 6 a.m. Friday, PG&E officials had identified 23 instances of weather-related damage in areas affected by the power shut-offs.

The National Weather Service has lifted red flag warnings for conditions that could cause wildfires to spread rapidly, but the weather remains dry with relative humidity in the 10% to 20% range.

The disappearance of the gusting Diablo winds means fires are far less likely to turn into out-of-control conflagrations like the deadly wind-whipped Wine Country and Camp fires of the past two years.

“It’s still dry and a little breezy,” Tangen said, “but the fire condition has definitely come down.”

Bay Area residents away from the bay and the coast woke to chilly temperatures Friday. The overnight low at the Sonoma County airport in Santa Rosa was just 38 degrees.

High temperatures Friday are expected to be in the 70s and 80s across the Bay Area, with San Francisco expected to hit 75 degrees downtown. Temperatures in the East Bay should be in the low 70s, while Redwood City and San Jose could get to 80. Santa Rosa will likely top out in the mid-80s.

Next week’s weather looks to be largely uneventful, Tangen said, with no strong winds and no rain. An earlier projection of precipitation has disappeared from the forecast, he said.

Michael Cabanatuan is a San Francisco Chronicle staff writer. Email: Twitter: @ctuan

He previously covered all things transportation for the San Francisco Chronicle — from BART strikes, acrobatic bridge construction and dark dirty tunnel excavations to the surging ridership on public transportation and the increasing conflict as cars, bikes and pedestrians struggle to coexist on the streets. He’s ridden high-speed trains in Japan, walked in BART’s Transbay Tube and driven to King City at 55 mph to test fuel efficiency.

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He joined The Chronicle as a suburban reporter and deputy bureau chief in Contra Costa County, and has also covered the general assignment beat. In addition to transportation, Michael covers a variety of Bay Area news, including breaking news events. He’s been tear-gassed covering demonstrations in Oakland and exposed to nude protesters in the Castro District.

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