“Overall, we’re moving into our warmest time of year, late August into early September,” the weather service said.
The sweltering temperatures prompted a statewide Flex Alert on Friday due to an expected increase in electric demand, mostly due to residential air conditioning.
Residents are urged to conserve electricity, especially during the late afternoon and early evening, when the grid is most stressed.
Consumers are urged to set air conditioner thermostats to 78 degrees or higher, turn off unnecessary lights, and use major appliances before 3 p.m. and after 10 p.m.
The Peninsula will be under a heat advisory from 11 a.m. on Friday, Aug. 14, through 7 p.m. on Wednesday, Aug. 19, according to the weather service.
Santa Clara County is under an excessive heat watch from Aug. 14-19. The county has opened cooling centers and advised the public to drink plenty of water, stay in air-conditioned areas, whenever possible,