![KPBS News | KPBS.org show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/049/510/small/kpbs-news-kpbs-org.jpg)
Summary: Nighttime temperatures will tumble well below freezing this weekend throughout San Diego County. The National Weather Service has issued a freeze watch for Saturday night into Sunday morning when temperatures are expected to plunge into the 20s from the coast to the inland valleys.