A winter weather advisory has been issued for heavy snowfall in the Sierra Nevada through today, the National Weather Service said.
Rain is also forecast in the Valley, as a cold system moves in from the Gulf of Alaska.
Another storm may bring more rain to the Sacramento area later in the week, said Craig Shoemaker, a weather service meteorologist.
In the mountains along Interstate 80 and U.S. Highway 50, snow levels could drop as low as 1,500 feet, making travel hazardous at times, he said. The weather advisory is in place for elevations above 2,000 feet. The storm is expected to dump its heaviest amounts of snowfall today.
The higher elevations, 3,000 feet and above, will receive a possible 6 to 10 inches of new snow, while the foothills above 2,000 feet elevation will get anywhere from 2 to 4 inches.
Scattered showers and possible thunderstorms are expected in the Valley, mainly today, Shoemaker said. Forecasts said the Valley could get up to 0.6 inch of rain in some areas.