High heat to persist in inland Southern California areas through Thursday

Very hot weather is expected to persist in the inland areas of Southern California throughout the week, forecasters say.

High temperatures are expected to peak on Tuesday, Aug. 3, throughout much of the region, according to the National Weather Service. Parts of the Inland Empire and San Fernando Valley are expected to reach highs between 98 and 107 degrees on Tuesday.

Riders at the Metro stop in North Hollywood find some cooling shade in the middle of the city Monday, August 2, 2021. Temperatures in the valley areas will be in the triple digits over the next couple of days. (Photo by David Crane/SCNG)

Temperatures are expected to drop off a bit on Wednesday, Aug. 4, but a more significant cool down won’t take place until Thursday at the earliest, said Tom Fisher, a meteorologist with NWS Los Angeles.

Relative humidity levels are expected to range as low as 5 to 15 percent throughout the San Fernando Valley as well, Fisher said. Much of Southern California is also experiencing critical fire weather conditions this week as a result of dry, hot and gusty conditions.

Woodland Hills can expect the highest mark for the San Fernando Valley on Tuesday with a forecasted high of 104 degrees, Fisher said.

Hemet is projected to reach 107 degrees on Tuesday as well, according to Stefanie Sullivan, meteorologist with the weather service in San Diego. San Bernardino is expected to reach 106 degrees on Tuesday as well.

The current heat wave is the result of a high pressure system that has positioned itself over Southern California during the start of the week, both meteorologists explained.

“It’s the typical Four Corners high pressure system (over Southern California currently) and then it will migrate back east by the end of the week,” Fisher said.

Inland Orange County cities like Fullerton and Yorba Linda can expect temperatures to reach the mid-90s on Tuesday, Sullivan said.

The Santa Clarita Valley can also expect some gusty on-shore winds on Tuesday, Fisher said

Expected high temperatures for Tuesday, Aug. 3:

Dana Point: 75 degreesFullerton: 91 degreesLong Beach: 85 degreesDowntown Los Angeles: 87 degreesSan Fernando Valley: 98 to 104 degreesSan Bernardino: 106 degreesTorrance: 84 degreesRedlands: 104 degreesRiverside: 103 degreesWhittier: 95 degrees

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