After a few days of relatively mild weather, Southern California will be baking in another heat wave this week.
The National Weather Service predicts high temperatures near or above 100 degrees across much of the region by Thursday.
“We’re just going to have pretty persistent high pressure for this week and even into the weekend,” said Sam Zuber, an NWS meteorologist in San Diego. “It’s just one of those situations where last week was cool and this week is going to be hot.”
Temperatures are forecast to be especially severe in the Inland Empire.
Riverside temperatures should climb from an expected high of 84 degrees on Sunday to 93 degrees on Monday. After that, they’re expected to jump again to 97 degrees on Wednesday and to 101 on Thursday and Friday.
In San Bernardino, temperatures are expected to jump from a high of 86 degrees on Sunday to 96 degrees on Monday, to 100 degrees on Wednesday, to 104 degrees on Thursday and Friday.
Ontario temperatures are forecast to go from an expected high of 82 degrees on Sunday to 90 on Monday. By Wednesday, temperatures are expected to reach 94 degrees. And on Thursday and Friday, the National Weather Service predicts highs of 99 and 98 degrees.
And in Redlands, temperatures are predicted to rise from an expected high of 85 degrees on Sunday to 94 degrees on Monday, 98 degrees on Wednesday, 102 degrees on Thursday and 103 by Friday.
Triple-digit temperatures are forecast throughout the Inland region by the end of the week:
- 104 degrees in Hemet
- 102 degrees in Joshua Tree
- 105 degrees in Lake Elsinore
- 115 degrees in Palm Springs
- 106 degrees in Victorville
“It does look like those high temperatures especially the Inland Empire will be persisting through at least Sunday,” Zuber said.
She hoped temperatures would drop next week. But as of Sunday, she believed they’d likely remain above average for the year.
The National Weather Service predicted winds would be mild, with any “fire weather” dangers peaking Tuesday, and no elevated risk after that. As of Sunday, winds in wildfire-prone areas of the Inland Empire are predicted to remain normal throughout the week.
Temperatures elsewhere in Southern California will be milder, especially closer to the coast. But only by comparison.
“These are well-above-normal temperatures that are going to be capable of causing heat stress,” said Ariel Cohen, a meteorologist with NWS in Los Angeles. “Those are susceptible to those conditions should start preparing now.”
In downtown Los Angeles, temperatures will to climb from an expected high of 83 degrees on Monday to a high of 90 on Thursday and Friday.
Anaheim is expected to see a steady rise in temperatures, from a high of 83 degrees on Monday to 89 degrees on Thursday and 90 degrees on Friday.
Temperatures are forecast to jump more than 10 degrees in Irvine this week, from a high of 77 degrees on Sunday to an expected high of 88 degrees on Friday.
In Long Beach, temperatures should go from an expected high of 82 degrees on Monday to a high of 88 on Thursday and Friday.
Pasadena temperatures should soar more than 20 degrees this week. They’ll start with an expected high of 78 degrees on Sunday to a high of 87 on Monday, through 93 on Wednesday, 98 on Thursday and 99 by Friday.
In Torrance, high temperatures are expected to reach 78 degrees on Wednesday. But they’ll jump to 83 degrees on Thursday and Friday.
Temperatures should climb in West Covina from an expected high of 81 degrees on Sunday to 88 degrees on Monday, to 94 on Wednesday and 99 degrees on Thursday and Friday.
In Whittier, temperatures should jump from a high of 79 degrees on Monday to 89 degrees by Wednesday and 95 degrees by Thursday and Friday.
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Hot weather safety: Tips for staying safe and healthy
- Stay hydrated: Drink plenty of fluids.
- Seek cool shelter: Opt for an air-conditioned room to stay comfortable.
- Avoid sun exposure: Stay out of the sun, and check up on relatives and neighbors.
- Child and pet safety: Do not leave young children and pets unattended in vehicles when car interiors can reach lethal temperatures in a matter of minutes.
- Caution outdoors: If you work or spend time outside, be sure to take additional safety measures.
- Select the ideal time: When possible, reschedule strenuous activities to early morning or evening.
- Recognize heat-related issues: Educate yourself about the signs and symptoms of heat exhaustion and heat stroke.
- Dress for comfort: Wear lightweight and loose-fitting clothing
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Additional recommendations for outdoor workers:
- The Occupational Safety and Health Administration (OSHA) recommends frequent rest breaks in shaded or air-conditioned areas for outdoor workers.
- If someone is overwhelmed by the heat, swiftly relocate them to a cool, shaded location.
- In emergency situations, dial 911 for immediate assistance.
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