Why is it so cold? Here's how 'radiation fog' is contributing to the December chill

Why is it so cold? Here's how 'radiation fog' is contributing to the December chill

Have you turned your heat on earlier than normal? 🥶 A common winter weather phenomenon is contributing to temperatures being over three degrees below average in some Bay Area cities in December. STORY: https://abc7news.com/18272290/ #weather #bayarea #centralvalley #fog #cold #winter #abc7news