The marine layer will reach the foothills by Friday morning with a few sprinkles possible and patchy fog inland. Increasing sunshine into the afternoon, with most areas sunny by mid to late morning.
Cooling begins Saturday with a 5 to 25-degree drop in temperatures by Sunday as a cold storm moves over Southern California. There is a chance of isolated to scattered showers Saturday night through Sunday, potentially lingering into Monday and even into Tuesday. There is a slight chance of an isolated thunderstorm overnight Saturday into Sunday.
Accumulations will be light from a few hundredths to .25″ for most and isolated amounts up to .50″, mainly near the mountains. Little to no rain is expected in the deserts. A dusting of snow will be possible for the higher elevations of Mt. Laguna, Palomar Mountain, Cuyamaca Peak and Lookout Mountain…