Southern California set for brief cool-down into weekend before temperatures rise again

After bouts of intense heat brought record-highs and strained the power grid across Southern California, the region can expect to get a brief respite from high temperatures starting Friday, Sept. 30.

The high-pressure system responsible for the recent heat wave will be replaced this weekend by a cooling low-pressure system from the Pacific Northwest, according to NWS meteorologist Adam Roser.

However, the cool-down won’t be permanent; temperatures will warm up again by early next week, Roser said.

One-year-old Romel Leon, of Fontana, attempts to drink water as he plays in the splash pad at Guasti Regional Park during a heat wave where the temperature reached 100 degrees in Ontario on Tuesday, Sept. 27, 2022. (Photo by Watchara Phomicinda, The Press-Enterprise/SCNG)

As a high-pressure system building off the Pacific Ocean strengthens into next week, warmer weather, clear skies, and dry conditions can all be expected, Roser explained. Still, the warming effect is expected to be slight compared to the extreme highs of recent months, Roser noted.

Projected high temperatures for Friday:

Dana Point: 75 Fullerton: 84Long Beach: 80Downtown Los Angeles: 81 Woodland Hills: 91San Bernardino: 92Torrance: 78Redlands: 90 Riverside: 89 Whittier: 84

Source: National Weather Service 

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