More storms are on the way in Southern California. See rain timeline

Storm systems are expected to arrive in Southern California this weekend, bringing widespread rain and possible thunderstorms.

The first storm will arrive late Friday night as some parts of Southern California may experience some moisture Friday night into early Saturday before steadier rain hits the region, according to NBC Los Angeles Meteorologist Melissa Magee.

“Mostly cloudy sky with some pops of sun from time to time (Saturday) and just an isolated and stray shower as we head into Saturday night into Sunday,” Magee said.

The National Weather Service (NWS) also predicts the first storm system set to arrive late Friday into Saturday will have little impact on Southern California.

The second system, which is expected to arrive late Saturday into Sunday, will be stronger with heavy showers.

Mountains and deserts are more likely to see windy conditions, gusting 25 to 45 mph over the weekend, according to the NWS.

“Even some gusty thunderstorms and then snow is likely above 6,000 feet as we head into our Sunday night into Monday,” Magee said.

The Big Bear region could see an inch of spring snow.

A Winter Weather Advisory was issued for mountain areas above 5,000 feet, where up to 6 inches of snow could fall at higher elevations, with lighter accumulations possible at lower elevations.

Temperatures will remain below normal through early next week before a warming trend begins by midweek, forecasters said.