SF Bay Area’s ‘weather rollercoaster’ will bring wild temperature swings this week

A heat wave was expected to hit the Bay Area on Wednesday, bringing what meteorologists called a “weather rollercoaster” of wildly swinging temperatures.

Above normal temperatures were forecast Wednesday through Friday, with Thursday potentially breaking high temperature records in several locations, according to the National Weather Service.

Temperatures will start to cool on Friday but will remain above normal, weather officials said. By Sunday, the region will experience a drastic change in conditions with a drop of 10 to 20 degrees, weather officials said.

“It could be a bit of a roller coaster ride, where we go from very hot this week to below normal next week,” said Cindy Palmer, a meteorologist with the weather service.

The heatwave was expected to bring the hottest temperatures of the year so far, with coastal cities reaching the 80s and inland areas into the 90s.

San Francisco could hit a high of 82 degrees on Thursday; Oakland 86 degrees; Petaluma 87 degrees; and Palo Alto 88 degrees.

Meanwhile, inland areas like Livermore and Concord will approach or hit the low 90s on Thursday.

The South Lake Tahoe area could experience a high of 70 degrees on Thursday before dropping back into the 30s on Monday with a slight chance of snow showers, weather officials said.

“Seek shade, try not to go outside during the hottest part of the day, drink water (and) wear light, loose clothing to protect yourself from the sun,” Palmer warned.

Those planning to hit the beach on Wednesday have been warned of dangerous waves that can reach over 11 feet at several Bay Area beaches. A statement on the dangers of the beach was issued until 9 p.m. Wednesday.

By next Monday, weather will return to normal and below normal temperatures with highs in the 50s and 60s across the region and a slight chance of rain early next week, weather officials said. .

Jessica Flores (her) is a staff writer for the San Francisco Chronicle. Email: [email protected]: @jessmflores