SAN DIEGO (CNS) - The cold low pressure system responsible for the snow Saturday will lead to cooler weather for the next couple days, according to the National Weather Service.
Forecasters said already chilly temperatures were expected to drop to sub-freezing tonight in some areas.
A freeze warning for the valleys will remain in effect Saturday night into Sunday morning. Locales included under the advisory include Alpine, Jamul, Rainbow, Ramona and Valley Center.
High temperatures of 38 to 48 degrees in the mountains are expected to fall to between 18 and 28 degrees tonight. In the valleys and deserts, patchy frost is expected to form tonight in colder, wind-sheltered locations amid low temperatures of 27 to 35 degrees and 29 to 37 degrees, respectively.
Forecasters warned that such low temperatures can damage unprotected plants and crops and could harm outdoor pets.
On Friday, wintry weather, rain and mountain snow prompted road closures and snow chain requirements in parts of San Diego County.
Snow showers developed over the mountains late Thursday night and continued periodically through Friday afternoon. A winter weather advisory for mountain locales including Julian, Pine Valley, Palomar Mountain and Mount Laguna remained in effect until 4 p.m.
The snow level on Palomar Mountain dropped overnight to about 4,000 feet above sea level. About three inches of powder was on the ground at about 9 a.m.
Around four inches of snow had also accumulated on Sunrise Highway, southwest of Mount Laguna, according to the California Highway Patrol. Julian got a light dusting as well, according to the weather service.
Motorists were required to use tire chains on snow covered Palomar Mountain roadways, and on Sunrise Highway between Interstate 8 and state Route 79, according to the county Department of Public Works.
http://www.cbs8.com/story/9532416/freeze-watch-in-effect-for-parts-of-san-diego-county
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