I'm not sure where you get your weather info nowadays, but there is still plenty of TV and other media coverage that includes discussion of the natural influences, including the jet stream, on daily weather. But even if you can't find such explanations on TV, you can always find them from NOAA. The very first thing that appears on the weather.gov page is a daily discussion of the regional ("synoptic") features of the atmosphere that will influence the weather across the U.S. Just click the "read more" link.

You won't find a lot of that type of thing here on Climate.gov because we are focused on the things that influence climate, not weather.