Weslee, 6, of Clairemont got cool relief from the scorching temperatures at Waterfront Park. Photo by Chris Stone

Scorching heat was felt everywhere except the coast in San Diego County Friday and a brutal stretch of temperatures is not expected to relent until the middle of next week, according to the National Weather Service.

Building high pressure over the southwestern United States will usher in scorching temperatures for the next five to six days, with the peak of the heat expected Friday through Monday, forecasters said.

The weather service issued an excessive heat warning that will be in effect until 9 p.m. Monday in the county valleys and mountains.

The warning will be in place until 10 p.m. Wednesday in the deserts.

The weather service urged residents to drink plenty of fluids, stay out of the sun and check up on relatives and neighbors. Also, children and pets should be never be left unattended in a vehicle, with car interiors able to “reach lethal temperatures in a matter of minutes,” according to the NWS.

Highs Friday afternoon included:

  • 106 degrees in Campo
  • 104 in San Pasqual Valley
  • 102 in Alpine and Santee
  • 101 in El Cajon and Ramona
  • 99 in Escondido and Rancho San Diego
  • 97 in Fallbrook, Miramar and Serra Mesa
  • 96 in La Mesa; 95 in Lemon Grove
  • 94 in Rancho Bernardo and San Marcos
  • 90 in National City
  • 88 in Oceanside
  • 87 at San Diego International Airport

Highs in the county deserts are expected to remain around 118 through Wednesday, according to the weather service. The mercury in the western valleys is forecast to top out in the low-to-mid 90s through Wednesday as well, while highs near the foothills will remain in the mid-to-high 90s through at least Thursday.

Borrego Springs set a high temperature record on Thursday, according to the weather service. The city recorded a high of 117, eclipsing its previous mark for the date of 114 in 2012.

San Diego County has nine cooling centers available countywide with mandatory mask wearing and social distancing protocols in place.

Alpine, Borrego Springs, Fallbrook, Lakeside, Potrero, Ramona, Santa Ysabel, Spring Valley and Valley Center each have one “Cool Zone” location.

A full list of the cooling center locations can be found here.

Updated, 7 p.m. with afternoon temperatures.

— City News Service

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