After a short break from warm conditions over the weekend, the region began experiencing rising temperatures again on Monday. Meteorologists say the hottest days are likely to occur from Tuesday through Friday, when inland areas could see triple-digit heat while coastal communities experience temperatures in the 80s.

Forecasters warn the event could rank among the most extreme March heat waves on record for parts of the region.

The National Weather Service has issued a heat advisory beginning Monday morning, which is expected to escalate into an extreme heat warning lasting through Friday evening in several areas. Communities across Los Angeles County—including Woodland Hills, Glendale, East Los Angeles and Beverly Hills—could see daytime temperatures ranging from the mid-90s to more than 100 degrees.

One of the most concerning aspects of the heat wave is the lack of overnight cooling. Nighttime temperatures are forecast to remain unusually warm, with lows in many areas staying in the mid-60s to mid-70s, and some foothill locations possibly remaining near 80 degrees overnight.

Health experts say warm nights can significantly increase the danger of heat-related illness because the body has less opportunity to recover from daytime heat. Prolonged exposure can lead to dehydration, heat exhaustion and, in severe cases, heatstroke.

Public health officials note that extreme heat has become more frequent and severe in California in recent decades. Certain groups face higher risks during extreme heat events, including older adults, children, pregnant women, outdoor workers, individuals with chronic medical conditions and people experiencing homelessness.

Residents are encouraged to take precautions as temperatures rise. Local governments have opened cooling centers at libraries and community facilities where people can escape the heat. Authorities also recommend drinking plenty of water, limiting outdoor activities during peak afternoon hours and checking on neighbors or family members who may be vulnerable.

Forecasts suggest temperatures could reach 98 degrees in downtown Los Angeles, about 97 degrees in Long Beach, and around 100 degrees in parts of the San Fernando Valley later this week.

In the Inland Empire, even hotter conditions are expected. Highs could reach 105 degrees in San Bernardino, around 102 degrees in Riverside, and about 103 degrees in Hemet by Friday.

Weather experts say the pattern resembles a mid-summer heat wave occurring months earlier than usual, underscoring the importance of preparation and caution as the region heads into the unusually hot week ahead.

The post Record-Setting Heat Wave Forecast Across Southern California appeared first on The Hemet & San Jacinto Chronicle.

Afternoon highs near normal should continue on Monday and Tuesday, but forecasters are calling for conditions to heat up by Wednesday.

“I’m going to tell you right now, we’re going to be talking a lot about heat, unhealthy conditions and really our first aggressive warm up that we’ve had during this summer,” KTLA Meteorologist Henry DiCarlo said Monday morning.

A ridge of high pressure that has spent most of the summer sitting a little further east than normal is moving west again, which will bring back the hot temperatures.

“We’re going to be hot, throw in a chance of thunderstorms, and our fire concerns are going to go up toward the end of the week, so look for some major changes, and they’re not the best for us,” Henry said.

Wednesday’s heat wave is expected to continue at least through the weekend.

Woodland Hills in the San Fernando Valley is looking at possible highs of 104 on Wednesday, followed by 108 on Thursday and Friday, with more triple-digit highs expected over the weekend.

The National Weather Service (NWS) called for a slight chance of thunderstorms over the Los Angeles County mountains on Friday and Saturday.

Officials also warned of the high risk for heat illness and elevated fire behavior across the mountains and valleys during this period.

Residents were asked to review evacuation plans and be on the lookout for any messages from local emergency officials.

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