Temperatures could creep into the triple digits Tuesday in the Riverside metropolitan area and thunderstorms will be possible in the Riverside County mountains and deserts, according to the National Weather Service.
A high pressure system lingering over southern California will create a chance of thunderstorms Tuesday afternoon in the Coachella Valley, San Gorgonio Pass near Banning and the Riverside County mountains, forecasters said. Thunderstorms will be possible each afternoon through Thursday in those areas.
The chance of measurable precipitation is 20 percent Tuesday in the San Gorgonio Pass near Banning and the Coachella Valley and 40 percent in the county mountains.
Monsoonal moisture will remain in the region until Friday, when the high pressure system is expected to weaken and temperatures will drop through the weekend.
Thunderstorms will also be possible in the Riverside metropolitan area Wednesday afternoon, forecasters said.
High temperatures Tuesday will be 109 in the Coachella Valley, 108 in the San Gorgonio Pass near Banning, 99 degrees in Riverside, 94 in Temecula and 101 in Hemet.
Cooling centers are open daily across the county, providing residents who do not live in climate-controlled environments a free, cool space to relax until the evening hours.
A complete list of cooling centers is available at www.capriverside.org/Portals/0/PDF/Cool/2019_Cool_Center_Directory_7_10_2019.pdf.