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Southern California Forecast: Weekend Heat Wave to Give Way to Warmest Temps Monday

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A sweltering heat wave will broil Southern California this weekend and early next week, prompting heat alerts and excessive-heat watches for some areas, according to the National Weather Service.

“It will be very hot,” said Joe Sirard, a meteorologist with the service. “People should limit their time outside during the day.”

So how hot will it get? Temperatures in downtown Los Angeles are expected to climb from the mid-80s Saturday to the mid-90s by Sunday, while triple-digit temperatures are on tap for the valleys.

But it’s Monday, the first day of summer, that is expected to be hottest. The looming heat has prompted the National Weather Service to issue excessive-heat watches for L.A., the valleys and mountains Monday.

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Cooling centers are expected to open across Southern California, including in the following areas: