Depends on which news station your looking at, they don't seem to come close to each other. One says one thing the other says another. We have three news stations but two are owned by the same company, so they have the same weather guy and he's usually wrong. It's comical how the 7 day forecast changes every news cast.
That being said, it's no different with the NWS. Weather is, regardless of what many people think, not an exact science. I doubt it ever will be in my lifetime.
And getting winter weather forecasts right is worse than any, given the dynamic for air parcel temperature changes. Remember an just .1 of rain can equal an inch of snow. If they miss rain by two tenths of an inch, very few people care. That same amount in the winter...or more? Different story.