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Cooler temperatures for LA, but the heat wave will return

A heat wave in the Southern California Interior will give way to cooler weather on Sunday, but the respite will be brief as temperatures are expected to rise again by midweek.

Temperatures exceeded 90 degrees Saturday in most valleys and deserts in the region, with Lancaster in the Antelope Valley recording the highest temperature in LA County, 103 degrees. Those temperatures were about 10 degrees above normal for this time of year, due to a high-pressure system pushing cooler air away, said David Gomberg, a meteorologist with the National Weather System in Oxnard.

The system will weaken and move east bringing more moderate weather through Monday. But the heat wave will begin to rebound Tuesday and peak midweek, Gomberg said, as Southern California enters its sweltering summer.

“This is just the beginning,” he said. “As we enter June, the extremes will become more accentuated.”

Coastal areas were considerably cooler on Saturday, with morning low clouds, fog and near-normal temperatures. Temperatures remained in the 70s at Santa Monica and Hawthorne and at Los Angeles International Airport. Downtown LA hit 80; Pasadena, 92; and Northridge, 85.

Heat warnings and advisories were in place until 8 p.m. for the Santa Monica Mountains and the Antelope, San Fernando, Santa Clarita and San Gabriel Valleys.

Gomberg warned that next week’s heat wave could be more extreme and advised people to drink plenty of water, seek air-conditioned shelter, check on relatives and friends and never leave pets or unsupervised children in cars. He also said to avoid strenuous outdoor activities during the hottest times of the day.

A high wildfire threat in high desert and mountainous regions, triggered by hot, dry conditions and gusty winds, is expected to continue and spread to valley regions next Tuesday, Gomberg said.

Los Angeles Times

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