Looking at the ECWMF which has maintained a consistent solution over last 48 hours:
Strong southerly flow starting Southeasterly and shifting to Southerly flow during the game 12-15mph gusting up 25-30mph. Light rain showers transitioning to occasional moderate showers around halftime. But winds look to taper off around this time as well. Temps will be unseasonably warm and in the mid to upper 40’s.
With the stadium orientation being a true northwest-southeast orientation, we’re not going to see a true head or tail wind. A South-South East wind will create a modified head/tail and cross wind as it intersects the field at a 45 degree angle. This will transition to a cross wind later in the game as winds switch to the south. This will have a marginal impact on the flight trajectory on longer passes and FGs because adjustments will be needed to compensate for the change in direction.
My opinion, the winds speeds wont be a huge factor but the direction will be. I think this weather favors the Bills who rely on mostly short to medium completions and it limits the Cowboys best weapons, their deep threat and FG kicker. Josh also has the stronger arm, and don’t trust Bass on longer kicks, so not seeing as big of an impact for the Bills. I expect to see a lot of Cook (run and pass),QB runs and short passes to Kincaid and Knox.