San Diego, California – Southern California is facing a dangerous stretch of summer heat, with valley temperatures climbing above 100 degrees and little relief expected until late Friday. Power grids, outdoor workers, and the region’s most vulnerable residents face heightened risk as the heat advisory remains in effect for much of San Diego, Riverside, Orange, and San Bernardino counties.
According to the National Weather Service, residents in the San Diego County valleys, including Santee, Escondido, and Poway, should expect highs between 95 and 102 degrees through 8 p.m. Friday. Inland Empire communities like Riverside and San Bernardino may see even hotter conditions, topping out at 106 degrees. Mountain areas—from Big Bear Lake to Julian—will also feel the effects, with readings in the 90s and low 100s expected.
Authorities urge everyone to stay hydrated, remain indoors with air conditioning when possible, and avoid strenuous outdoor activities during peak afternoon hours. Check on elderly neighbors and never leave children or pets inside parked vehicles, where temperatures become deadly in minutes. Hikers should consider postponing plans in the Santa Ana, San Bernardino, and Riverside county mountains as trails become hazardous in the intense heat.
The extreme temperatures are expected to linger through Friday evening, with further advisories possible if the heat doesn’t subside. Stay tuned to local alerts and be prepared for sudden changes as the region rides out this prolonged summer blast.
