KGO Nightline December 21, 2010
good evening. we're going to begin tonight with the weather outside. the tricky business of predicting just what it will be like tomorrow. not to mention next week. or even next month. satellite radar computer models and centuries of precedent are just a few of the tools the modern day forecaster has at hand. but would you depend on a long-range forecast to plan a wedding or plant a crop? tonight, weather men and women who claim to have found more ways to be more right more often. >> reporter: the way the weather's been behaving lately, it's hard to believe that winter just starts to...