My dorm room is too hot?

I just moved into my college dorm room several days ago. It is an old building and my room is on the top (3rd floor). This floor used to be an attic so my window is slanted, opens upward, and can't even open completely. Because of this, absolutely no breeze comes through and it's cooler outside than inside (it's been hitting 90 degrees). I have a small fan and I've been using ice packs at night to cool myself down but they haven't helped much. Getting an air conditioning is also prohibited. I would really, really appreciate any ideas you have about how to cool my room and myself down! Thank you!
My dorm room is too hot?
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