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.
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.
Very Hot Conditions through Wednesday over much of southwest California. Take heat illness seriously and stay safe. #cawx #HeatWaves pic.twitter.com/3sYr2ThNQ3
— NWS Los Angeles (@NWSLosAngeles) August 2, 2021
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 heat is on! ????️
High temps will continue to climb over the next couple of days for inland areas. Below are the forecast highs for Tue-Thu.
If you are planning any outdoor activities, be sure to seek shade during the hottest part of the day and drink plenty of water! #cawx pic.twitter.com/FQNNMZP1Y4
— NWS San Diego (@NWSSanDiego) August 2, 2021
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
Source: National Weather Service