Well we wanted a weather advantage but this is perhaps overachieving in that department.
Weather.com's long-range forecast for the day of the game is clear skies but cold -- as in c-o-l-d -- temperatures. High 31 with a northwest breeze 10-15 MPH which would put the wind chill in the teens.
As 00 noted, however, it's a little early for a reliable prediction. Still, the science of meteorology has advanced to the point where it's possible to forecast at least general trends in weather for a given month. We'll see.
Just be reminded both teams must play regardless of the weather conditions. Have been to Dallas on January 1, it was cold, not bitter cold, but cold indeed.