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Temperatures forecast for Thursday are ten to twenty degrees above normal across the Bay Area: between 15 and 21 degrees Celsius on the coast, between 27 and 32 degrees Celsius near the coast, and over 37 degrees Celsius inland.

Temperatures forecast for Thursday are ten to twenty degrees above normal across the Bay Area: between 15 and 21 degrees Celsius on the coast, between 27 and 32 degrees Celsius near the coast, and over 37 degrees Celsius inland.

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Dangerously hot weather returns to the inland Bay Area on Thursday as a strong high pressure system flexes its muscles one last time over Northern and Central California. The extreme heat will continue for two more days before a low pressure system pushes the heat dome eastward.

Highs Thursday are expected to reach triple digits in the East Bay and South Bay valleys and flirt with triple digits in the North Bay. Vacaville, Antioch, Livermore, Pleasanton, Concord and Fairfield could see temperatures reach or exceed 40 degrees.

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An extreme heat warning is in effect for inland areas of Alameda, Contra Costa and Santa Clara counties, as well as the North Bay Mountains.

A heat warning is in effect for Wine Country, the Bay Coast, the Delta region and the Santa Cruz Mountains. Highs in Oakland and Berkeley will be 27 degrees, while 32 degrees are expected in Hayward and Fremont and along the peninsula. San Francisco will be relatively warm, with temperatures around 21 degrees and plenty of sunshine expected in most parts of the city.

Skies may become slightly hazy due to smoke from wildfires in the distance, but the smoke is expected to remain above ground. However, smog from ozone pollution has prompted a “Spare the Air” warning across the Bay Area, with the worst air quality expected in the South Bay and East Bay.

Another hot day is expected for Friday. Heat warnings and advisories are in place until 8 p.m. However, a cool breeze from the sea is likely to blow in the evening, meaning temperatures will not rise above three figures for the foreseeable future.

By Sunday, temperatures will return to near normal, with highs of around 15 degrees Celsius on the coast and between 27 and 32 degrees Celsius inland.

By Sunday, temperatures will return to near normal, with highs of around 15 degrees Celsius on the coast and between 27 and 32 degrees Celsius inland.

Baron/Lynx

Inland temperatures will still be 5 to 10 degrees above normal on Saturday, but typical July heat is expected from Sunday through next week, with highs of between 30 and almost 35 degrees. On the coast, temperatures will rise again to 15 degrees, and on the bay coast it will be 21 to 28 degrees.

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Thursday breakdown

San Francisco: A strong temperature gradient is expected throughout the city. Highs will be between 65 and 68 degrees Fahrenheit west of Twin Peaks, 70 degrees Fahrenheit in the Panhandle, Pacific Heights and downtown, and up to 80 degrees Fahrenheit in the Mission District, Portola and Visitacion Valley. Scattered morning fog is possible around Twin Peaks and Mount Davidson, but otherwise no clouds are expected. Lows will be between 55 and 60 degrees Fahrenheit near the water and between 55 and 60 degrees Fahrenheit in the hills.

North Bay: Very hot weather is expected in North Bay. Highs of 95 to 100 degrees Fahrenheit are expected in San Rafael, Petaluma, Santa Rosa, Sonoma, Napa and Vallejo. The highest temperatures are expected in Cloverdale, Healdsburg, Calistoga and St. Helena. These cities could see highs of 104 to 108 degrees Fahrenheit. Even Mill Valley and Tiburon will see highs of 80 to 90 degrees Fahrenheit. The coolest will be Stinson Beach, where temperatures will be between 77 and 80 degrees Fahrenheit. Nighttime lows will be between 55 and 65 degrees Fahrenheit in the valleys of Petaluma, Sonoma and Napa, and above 70 degrees Fahrenheit in the mountains.

East Bay: This will be the hottest day of the week in the East Bay, rivaling the extreme temperatures of the holiday weekend.

Highs in the Tri-Valley will be between 102 and 108 degrees, with similar temperatures in Walnut Creek, Concord, Pittsburg and Antioch. In the East Bay Hills, highs in the 90s and 100s are expected in Lafayette, Moraga and Orinda. Temperatures will reach the 80s and 90s in Oakland, Berkeley and Alameda, and the 90s and 90s in Hayward and Fremont. Overnight lows will be warm, in the 60s and 90s in the Bay Area, 60s and 90s inland and up to 70s in the hills.

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Pacific coast and peninsula: Extreme temperature differences are expected throughout San Mateo County. Temperatures are likely to stay in the 15 to 20 degrees in Daly City, Pacifica and Half Moon Bay, but just a few miles east, highs in Hillsborough and Burlingame will be in the 35s and 35s. 35 degrees is possible in Redwood City and Woodside. Temperatures will drop to 13 to 18 degrees overnight on the coast and 18 to 20 degrees east of the coastal mountains.

South Bay and Santa Cruz: Temperatures of 15 to 20 degrees above normal are expected throughout the South Bay. Highs will be above 90 degrees in Milpitas, Mountain View and Sunnyvale and around 100 degrees in San Jose. Temperatures could even reach 105 degrees in the southern parts of the Santa Clara Valley around Morgan Hill and Gilroy. Lows overnight will remain warm and in the 60s.

In Santa Cruz, heavy fog is possible in the morning as high pressure traps cool, moist air near Monterey Bay. Skies should clear by midday, with highs around 21 degrees on the coast. Temperatures will rise quickly toward the Santa Cruz Mountains, with highs around 28 degrees in Scotts Valley and around 32 degrees in Ben Lomond and Boulder Creek. Lows will be between 15 and 18 degrees below 1,000 feet, but around 21 degrees at higher elevations.

Reach Anthony Edwards: [email protected]

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