Stewy,
I could be wrong, but don't the Brewers play in a retracable ball park?
If they do then weather is not a factor there.
I do agree with the weather comment. It seems like you see this all the time in Chicago. They always have those day games with the wind blowing in, overcast, and misty rain. You always get that great shot of the 3rd base coach with the cubs hat on and the blue head tobagon that only allows you to see his eays.