Sunny daytime hours are expected to give way to rain Saturday night as a plume of moisture moves into Northern California from the Pacific Northwest.
The National Weather Service forecast calls for an 80 percent chance of rain Saturday night. Rain and possible thunderstorms are expected Sunday and into Sunday night.
The storm is expected to drop in 0.10 to 0.50 inches of rain in the Sacramento area.
A winter weather advisory, effective from 4 a.m. to 10 p.m. Sunday, has been issued for the Sierra, including Truckee and South Lake Tahoe. A cold front is expected to bring a period of moderate to heavy snow to the Tahoe Basin, with snow showers likely to continue into Sunday evening. Snow accumulations of 6 to 12 inches are forecast for areas above the 7,000-foot elevation, with 10 to 14 inches along the crest of the Sierra. Snow levels could drop as low as 3,500 feet Sunday night.
The National Weather Service is warning travelers heading through the Sierra to be aware of potentially hazardous driving conditions, especially with increased traffic for the opening weekend of ski resorts in the Tahoe Basin.