if you live in a place that gets cold, i think it's as much about dates as temps. the bees close the hive by sealing tops, cracks, etc with propolis. every time you get into the hive, you break that seal. for me, i need to be pretty much out of the hives by the end of September. honey off, hives fed, queens checked, entrance reduced, bottoms closed, no more checks.
if i live in Florida or JP land, i could/would check all year, but in cold areas what are you checking for? brood rearing is winding down and stores should be in.