Snow levels will drop to 4,000 feet, so local mountains will receive snow. I've posted projected snow totals below, which shows the highest mountains in San Diego County receiving a few inches of snow (1-4"), while taller peaks to the north in San Bernardino could receive more (3-8").
You can find the latest winter weather advisories at the San Diego National Weather Service:
https://www.weather.gov/sgx/
You can check for road conditions at the Caltrans website:
https://roads.dot.ca.gov/
Most of the weekend looks dry, though there is a slight chance for isolated showers on Sunday (40%) as a weak system passes our area.
