Honey, right now it the BEST time to buy jeans!! they're on sale and not picked over like in the winter. I mean it's highly unlikely that it's never gonna get cold again...
no go ahead! its off season so they might be cheaper and if your worried they wont fit when it comes to wear them buy a half a size or a size bigger and when it comes winter if they don't fit you can take them back and exchange them if you leave the tags on
No, its perfectly fine to get jeans in summer! If you want you could even buy them a tiny bit big and wear them this fall.
Nope, it wouldn't be stupid at all. If you see a pair of jeans you really really like, better grab them before someone else does. But it's obviously your choice whether to get a pair or not =)
get them if they're on sale. if not, then no. hot topic always has sales on their stuff.