By Andrew Holleran The Buffalo Bills are set to host the Dallas Cowboys in the biggest game on the NFL slate on Sunday. The Cowboys, 10-3 on the season, have been playing as well as anyone in the league as of late. But the Cowboys will have to battle both the Bills and the elements on Sunday. Nasty weather is in the forecast for Sunday afternoon’s Bills vs. Cowboys game. A steady rain is in the forecast for Sunday afternoon, with heavy winds and temperatures in the 40s. It could be an ugly game in Buffalo on Sunday. Cowboys owner Jerry Jones knows that the Bills are a tough team to beat. “They…