"Rainfall is expected to decrease to the south with around one-quarter to one-half inch for the Inland Empire and Orange County, and around one-third inch across northern San Diego County to around one-tenth inch across southern San Diego County.

Scattered showers are expected early this week for San Diego County, with a slight chance of thunderstorms in the afternoon into Monday morning for the coast, valleys and mountains, forecasters said Sunday.

Cooler, cloudier conditions and periods of light rain are forecast in San Diego County through Friday night as a weakening atmospheric river moves southward into Southern California, according to the National Weather Service.

SAN DIEGO (FOX 5/KUSI) — At long last, San Diego received its first significant rainfall — and snow — in months over the weekend. The precipitation, which was brought on by a cold low pressure system, was a much-needed break from stubborn arid conditions primed for potentially erratic fire behavior.

Some areas in Southern California, a region plagued by drought conditions, saw more than inch of rain this weekend.

The National Weather Service office in San Diego is forecasting cooler temperatures and widespread rain continuing into the first part of the week.