Scorching Temps Mark Labor Day & Rest of Week, But Chance of Rain Could Follow

A tropical system in the south near Mexico could create a chance for rain if it moves north into our region

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Scorching temperatures will mark your Labor Day and longer as the unforgiving heat continues to grip San Diego County.

An excessive heat warning has been extended to 8 p.m. Friday for San Diego's coastal and inland areas and until 8 p.m. Thursday for the mountains and deserts as most of California is in the midst of a grueling heat wave that is now expected to last for more than a week.

Thanks to an area of high pressure over the Sun Belt, temperatures for Monday are forecasted as followed:

  • Coast: low 90s
  • Inland: low 100s
  • Mountains: mid-90s
  • Deserts: low 110s.

“(High pressure) is responsible for all the heat, and it has been over the past several days,” NBC 7 Meteorologist Sheena Parveen said. “It will stay responsible for the heat through the middle of this week."

Amid the heat wave, California's energy operator has issued a flex alert to urge electricity customers to conserve energy to reduce the risk of rolling blackouts in the state. The flex alert was extended for Monday from 4 to 10 p.m. and was likely to be extended further. The California ISO president warned Monday has the highest likelihood of rotating outages, so far, this summer.

Temperatures records were broken on both Saturday and Sunday in parts of San Diego County, and it was possible more could be set through Wednesday.

"Temperatures will stay very hot through the middle of this week, and then we’ll see some changes approaching the weekend,” Parveen said.

Those changes include wet weather potentially ending our workweek. A tropical system in the south near Mexico could create a chance for rain if it moves north into our region.

Large crowds are expected to flock to San Diego’s beaches as locals and tourists seek relief from the relentless heat. NBC 7’s Audra Stafford speaks to visitors.

“By that point, it would be the remnants of that tropical system but finally, we have some decent rain – that’s what it looks like as of now – in the forecast,” Parveen said.

You’ll want to hold off on bringing out your cable knit sweaters and running out for your favorite pumpkin-flavored warm beverages, however. Friday and Saturday’s rain chances won’t be the autumn event you may be looking for.

“That rain is going to help cool us down but it’s still going to be very warm and very muggy,” Parveen said. “Again it’s a tropical system so expect that high humidity into the weekend.”

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