And, just HOW COLD is it in Southern California?

Here's a link to photos from the Los Angeles Times! Motorists were stranded overnight on the Grapevine. Interstate 15 IS open, but is under California Highway Patrol control. There is snow in Las Vegas!!! Brrrrrrrrrr!!!
Here's the link to the LA Times photos: http://www.latimes.com/news/local/la-me-cold-weather-pictures,0,1595108.photogallery