this kinda depends on what the temps are. in extreme heat they will move more because they need water that more often. if its in the mid 30's or 40's, they still be moving(at least here anyhow) they MIGHT move slightly less but then isn't that what archery's about. the wait, the anticipation and the score??

you just might have to sit longer, bring out plenty to eat,drink and read to pass the time.

speed