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Record Heat Hits Southern California Cities Aug. 18.

Record Heat Hits Southern California Cities Aug. 18.

Riverside: 108, tied at 108 in 1950

San Jacinto: 106, previously 104 set in 2003

Santa Ana: 106, previously 95 in 2010

Anaheim: 105, previously 101 in 1992

Newport Beach: 87, previously 84 in 1945

Source: National Weather Service

In an image photographed by the Riverside County Sheriff’s Department, a storm cell drops rain in the Hemet area on Aug. 18, 2020. More than 1.5 inches of rain fell in Valle Vista. (Courtesy of Riverside County Sheriff’s Department via National Weather Service)

Above-normal temperatures in Southern California will cool slightly, but the humidity will make you think otherwise.

The sticky weather is going to stick around.

“The heat and the humid feeling that comes with it is not going to go away anytime soon,” Miguel Miller, a meteorologist in the weather service’s San Diego office, said Tuesday, Aug. 18.

The 25% to 30% humidity coming from the onshore flow is really not all that high, Miller said. “The fact that the temperature has gone up makes you feel the humidity even more,” he said.

Southern California experienced its highest temperatures of the week on Tuesday, Miller said. Some of them broke records.

In the Inland Empire on Tuesday, Chino Airport recorded 113 degrees, it was 109 at San Bernardino International Airport, 107 at Ontario International Airport, 108 at March Air Reserve Base, 108 in Redlands, 105 in Temecula and 105 in Beaumont.

Orange County recorded 109 degrees in Yorba Linda, 106 in Santa Ana, 105 in Anaheim, 100 at John Wayne Airport and 86 in Huntington Beach.

In Los Angeles County, it was 111 in Northridge, 109 in Burbank, 109 in Pasadena and 99 in Long Beach.

High temperatures in the Inland Empire are expected to range from 95 to 102 degrees this weekend, with Lake Elsinore, Hemet and San Jacinto experiencing the worst.

Orange County high temperatures will reach about 90 degrees Saturday and Sunday.

In Los Angeles County, high temperatures are expected to be about 100 by week’s end.

There is an excessive heat warning in the region through Thursday night.

The weather service cautioned people to stay in air-conditioned buildings, drink plenty of water, check on relatives and neighbors, never leave children and pets in vehicles and wear lightweight and loose-fitting clothing.

The humidity showed up Tuesday, with brief but heavy downpours in the San Bernardino Mountains and southwest Riverside County east of Hemet.

A flash-flood warning was issued for the area near Cherry Valley where the Apple fire burned more than 33,000 acres, leaving the seared ground in some spots unable to soak in the rainfall, but the heaviest rain missed that spot, Miller said. “We think we dodged a bullet with that one. But we’re still concerned about the burn scar,” he said.

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