I suspect that, come kick-off at 3:30 PM, it'll be more like 70 degrees outside. Those inside won't have any issues.
Depending on where you sit, there's a definitely breeze you can feel coming from one side of the canopy through the other. When I attended the SNF game with the Titans, I was wishing that I'd worn pants instead of shorts - it got breezy that evening even though it was nice and sunny that day.
The Jacksonville game had a 1 PM start and, again, it was a warm sunny day. Different seats...no breeze...very comfortable.
I don't know what it's like on the field.