From the Frozen Tundra of Lambeau Field..

..comes the Sunday night game between the Packers and Lions. Current temperature in Green Bay is 32° but the temperature will fall during the game.

Take a look at AccuWeather Regional Radar:

The darker blue is heavier snow (see arrows along leading edge) that extends all the way west Eau Claire. So, there is a good chance of accumulating snow during the game.  Kickoff is in about an hour.