A winter storm warning is in effect from 2 p.m. Friday to 11 a.m. Saturday for areas above 4,000 feet in San Diego County.
Snow is expected to fall to 5,500 feet Friday morning and down to 5,000 feet by Friday afternoon, according to the National Weather Service. Over Friday night and Saturday morning, snow levels may drop to 3,500 feet. Areas anticipated to be affected include Julian, Santa Ysabel, Wynola, Cuyamaca, Warner Springs, Lake Henshaw, Ranchita, Pine Valley, Mt. Laguna, Boulevard and Campo.
Ramona is due to receive rain.
All areas are expected to see gusty winds. In the mountains, southwest or west winds could gust up to 70 mph in passes and wind prone areas.
Drivers should exercise caution on Interstate 8 and in the higher elevations of Highway 78. Travelers should carry chains, extra food, water, clothing and a flashlight in case of an emergency, the Weather Service warned Thursday.