Yep, I'm headed to the "Lou" for ten days. The warm days are ending in Calgary, but mid-August is still high summer in the midwest. The extended forecast says about half of those days it will get up to 102F (39C), but all will get up to at least 93F (34C). This isn't counting humidity.
I am taking swimming trunks and the pair of shorts I own which does not contain holes in embarrassing places. Possibly some shirts, too.