The National Weather Service says 20 to 30 mph winds, with gusts up to 54 mph through mountain passes and canyons, were registered across the region on Sunday.
The California Highway Patrol blamed the winds for causing a tractor-trailer to roll onto its side on Interstate 40 in Needles. Another big rig rolled onto its side near Rancho Cucamonga.
The San Bernardino Sun says no major injuries were reported in either accident.
Police in Santa Monica said the winds knocked a pine tree onto three parked cars, destroying two of them, and a tree split apart and fell onto the Zuma Beach access road in Malibu.