If your play is contigent upon the weather conditions, I would wait until the pre-game show at 1:00p CDT. Not too long ago, 20 miles north of the city, the wind was blowing hard from the SW causing everyone to jump on the over. Yet, come pre-game, the wind at Wrigley was mysteriously blown in just as hard which had everybody baffled...even the meteorologists. That's how screwed up the weather can be in the Chicago Metro area. Take my advice for what it's worth.