Triple-digit temperatures are expected again Thursday throughout Riverside County, but relief will arrive on Friday in most areas and temperatures are expected to keep dropping over the weekend, according to the National Weather Service.
High pressure centered over the Four Corners region will begin moving east on Friday as a trough of low pressure moves over the west coast and brings cooling from Friday through Sunday, forecasters said.
The agency issued an excessive heat warning that will last until 8 p.m. Thursday in the Coachella Valley and a heat advisory that will run through 8 p.m. Friday in the Riverside metropolitan area.
High temperatures Thursday are forecast to reach 114 in the Coachella Valley, 104 in the San Gorgonio Pass near Banning and in Hemet, 101 in Riverside and Lake Elsinore, 100 in Temecula and 87 in Idyllwild.
Highs in the Riverside metropolitan area could reach 101 on Friday, while the mercury in the Coachella Valley is expected to dip to 110, then 104 on Sunday, forecasters said.
The NWS urged residents to drink plenty of fluids, stay out of the sun and check on relatives and neighbors. Also, children, seniors 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.
Palm Springs and Thermal set high temperature records for an August 26 on Wednesday, while Indio tied its previous record of 116 recorded in 1944, according to the NWS. Palm Springs reached 118, besting its previous mark of 116 in 1967, and the mercury in Thermal topped out at 117, just above its 2017 record of 116.
Riverside County has 35 cooling centers available countywide with mandatory mask wearing and social distancing protocols in place.
A full list of the cooling center locations can be found at: www.capriverside.org/Cool-Centers.