Rainy days in the dorms can feel unproductive and boring, but with the right people and activities, it can be magical.
Play a board game
Believe it or not, board games are a great way to spend time with the new friends you have made. Catan is a particularly popular staple for me and my friends. Just be careful alliances will be made and friendships will fall.
Watch a move... or two
Rainy weather is blanket weather. There is nothing better than curling up with a blanket and watching movies from your childhood. Bonus points if they're Disney (especially Lilo and Stitch).
Clean
It may seem like a completely terrible idea, but deep cleaning with your roommate or suitemates is a nice bonding experience. Blast the music and accept that although the toilet does need to be cleaned, you can laugh about it later.
Make a change
The small dorm rooms can start to feel like a prison, especially how they are when you move in. My advice, change it up. Move the furniture around to suit your needs and to make it feel more "homey." Currently, my roommate and I have our room set up for entertainment.
Make a friend
Most people stay in buildings when it is pouring, making it the perfect time to talk to a person you may have a friend-crush on. Invite them to hang out with you and your friends or just chill with them.
Dance
The only response to someone looking at you as it pours outside and saying "Dance in the rain with me?" is "Yes." Period. No other descriptions needed. Do it for the memory.