You would know, but I so miss the old ballparks. I saw over 600 games at Memorial Stadium, which many thought was a total dump. Personally, I would give my heart and soul to watch baseball there over Camden Yards any day or night.
Bringing weather into it, I was an 18 year old Sunday season ticket holder back in 1984 at Memorial. Took a friend from work down to a Sunday afternoon double dip against the Tigers. (they started that year 35-5) At any rate, the Tigers won game #1 12-4 and were up 10-0 in the nightcap and there I sat blissfully watching the game I love so much. The guy with me was beside himself that we were still there, 6 hours after game #1 started. You see, the announced temperature at game time was 101 degrees. And like Arlington Stadium, Memorial Stadium's upper level was almost entirely metal benches with metal backs. There were over 50,000 at 2pm...probably about 500 of us at 8pm, lol.
That was the hottest sporting event I've attended. I've been to a lot of 'em.
Edit: If any of you go to an O's game (no idea why any would want to, sadly) but anyway...take note of the announced game time temperature. Since sometime at least back to the 1970s the temperature has ALWAYS been an odd number. It's a tradition that I'm not sure how it started but I know it to be true.