Heat Advisory For Oceanside: 'Dangerous' Heat Wave To Scorch San Diego County

OCEANSIDE, CA — A late-summer heat wave will bring scorching temperatures to San Diego County this week, prompting the National Weather Service to issue an excessive heat warning and a heat advisory for different parts of the region.

An excessive heat warning will be in effect from 11 a.m. Wednesday to 8 p.m. Friday for the deserts, mountains and valleys.

Dangerously hot conditions with high temperatures of 102 to 110 degrees are expected in the inland valleys, according to the NWS. Temperatures are expected in the 90s to 104 degrees in Julian, Pine Valley and other mountain areas, and between 112 to 118 degrees in Borrego Springs and other desert locations.

"Heat-related illnesses increase significantly during extreme heat events," forecasters warned.

Temperatures are expected to be less stifling along the coast, where a heat advisory will be in effect from 11 a.m. Thursday to 8 p.m. Friday, including in Oceanside. High temperatures are expected in the mid-80s near the coast to the 90s for inland coastal areas and near higher coastal terrain, according to the NWS.

"Strengthening high pressure aloft will bring warming and drying through Friday," NWS San Diego forecasters wrote Wednesday. "Thursday and Friday will be the peak of the heat with high temperatures as much as 12 to 18 degrees above average for the valleys."

Weather officials reminded residents to drink plenty of fluids, stay in air-conditioned rooms, stay out of the sun, and check on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances.