I am pretty much in the same weather pattern as Pittsburg and I walk outside and cant see my breath which means it isn't cold.I can wear a sweatshirt only,a coat would be over kill.
After December 25th is when the real cold weather comes in.The weather will be a non-factor.
Weather for next Sundays game in Pittsburgh calls for a high of 31 and a 50% chance of snow showers.
Don't the Steelers have to play in the same weather? It's a wash. The argument that hot weather teams cannot play well in cold weather, and vice versa, is just an excuse. I think the time zone changes from flying from one coast to another affects teams way more than the weather.
In 2008 the Dolphins played at Kansas City. The temperature at kickoff was 10 degrees making it the coldest game in Dolphins history. With a wind chill, the temperature was -12. Dolphins won 38-31 and racked up 403 yards of total offense.
So like you said it's just an excuse, they have done it before.