San Jacinto broke a 34-year-old high temperature record for Aug. 19 Wednesday, a day after beating another daily record, as a heat wave continued throughout Riverside County and much of Southern California.

Wednesday’s high reached 108 in San Jacinto, beating out its 107-degree record set in 1986, according to the National Weather Service.

The mercury in San Jacinto reached 106 on Tuesday, besting its high temperature record for Aug. 18 of 104 degrees, which was set in 2003. Records have been kept in the city since 1948.

Other Riverside County highs Wednesday included 114 in Palm Springs, 111 in Thermal, 106 in Riverside and 104 in Beaumont, according to the weather service.

High pressure over the southwestern United States began to slowly weaken Wednesday as it moved southward into Arizona, forecasters said.

An excessive heat warning will remain in effect until 10 p.m. Thursday in the Riverside metropolitan area, the Riverside County mountains, the San Gorgonio Pass near Banning and the Coachella Valley.

The weather service urged residents to drink plenty of fluids, stay out of the sun and check on relatives and neighbors. Also, young 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.

Temperatures were expected to drop slightly this weekend in Riverside County. Highs in the Coachella Valley are expected to drop to 108 on Saturday and Sunday, according to the NWS. The mercury in the Riverside metropolitan area is forecast to remain in the triple digits through Friday.

Riverside County has 14 cooling centers available countywide with mandatory mask wearing and social distancing protocols in place. There are five cooling centers in both Riverside and the Coachella Valley, two in the Banning Pass, and one each in Moreno Valley and Temecula.

A full list of the cooling center locations can be found at

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