Light rain is expected Friday and Saturday in San Diego County, according to the National Weather Service.
The system that brought some scattered showers and thunderstorms over the past two days will continue moving east Friday, then another low pressure system situated to the north of Southern California will cause the marine layer to thicken and bring light rain starting this evening, NWS meteorologist Jimmy Taeger said.
The chance of measurable precipitation is 50% tonight in coastal areas and the western valleys, while the county mountains have a 40% chance.
No rain is expected in desert areas Friday or Saturday.
Palomar Mountain could see a quarter-inch of rain and some coastal areas could get up to one-tenth of an inch, forecasters said.
Wind gusts reaching 40 mph are expected Friday near the desert mountains slopes, Taeger said. Those gusts will increase to 50 mph on Saturday.
Temperatures will be a little cooler Friday, then continue dropping through Sunday.
High temperatures Friday could reach 75 degrees near the coast and inland, 80 in the western valleys, 77 in the mountains and 94 in the deserts.
The chance of rain will continue through Saturday night before the system moves east out of the region by Sunday, Taeger said.
