The National Weather Service office in San Diego is forecasting rain and mountain snow showers for most areas Wednesday afternoon through Wednesday night.
Forecasters urged caution on slick roads once showers impact the region beginning near midday Wednesday, continuing through the evening and gradually subsiding at night.
A winter weather advisory has been issued for San Diego mountain areas in effect from 1 p.m. through 10 p.m. Wednesday for a few inches of expected accumulations, NWS said.
Forecasters said there is a chance of thunderstorms, mainly for coastal areas and portions of the San Diego County valleys. Locations impacted by heavier showers and thunderstorms may experience minor flooding and ponding of water on roadways.
Gusty winds from the south/southwest will develop Wednesday in tandem with the showers, according to the weather agency.
The strongest winds will impact the mountains, desert slopes, and much of the deserts, peaking in the evening. For these areas, gusts 40 to 55 mph are expected, with isolated higher gusts in windy and remote locations, particularly along the desert slopes of San Diego County.
There is a slight chance of light showers on Saturday from the coast to the mountains, with little to no impacts expected, according to the weather agency.