SAN DIEGO -- A week of Indian Summer might be capped by rain in San Diego County as a storm system swings through California this weekend, a National Weather Service meteorologist said Friday.

The tail end of the storm will bring a 20 to 30 percent chance of precipitation, said Noel Isla.

"It looks like mainly Saturday, just a little bit, a quarter of an inch or less," Isla said.

The storm will also bring a chance of light snow to the highest local mountain peaks above 5,000 feet, Isla said.

While the weather this weekend will be several degrees cooler, it will be nowhere near the frigid temperatures experienced during Christmas week, he said.

Isla said high pressure is coming behind the system, which should keep the rain away for most of next week.