For me, being from Maine (where we inevitably have snow until the end of April) the greatest thing about coming back to Yale is seeing all the snow disappear. Granted, sometimes Yale can play tricks on us (there was a light snow last night) but for the most part, good weather is here to stay.
These last 6 weeks of school are really a race to the finish - they tend to fly by quicker than any other part of the year. The feeling around campus is really great right now, people are starting to flock to the old campus lawn again. You can see people laying out doing reading for class, playing frisbee, football, soccer (sometimes the Yale Live Roleplaying Club is out there hitting each other with fake swords).
Other great things about Spring:
Spring IMs - ARE OUTSIDE! Although I love Payne Whitney, nothing beats the sun.
Spring Fling - the headliner this year is Lupe Fiasco, which was leaked early by his promoter (Goo Goo Dolls are apparently also in the works along with 3 other bands)
Society Tap Night - Every Spring, secret societies at Yale tap Juniors to join their society Senior year. Societies at Yale form a cool aspect of Senior year - they're "secret" but really everyone knows what all of them are. They're a great way to get to know a different, diverse group of people that you wouldn't otherwise meet.
JE WET MONDAY - This one is special to JE. Ever year, a few days before Easter, there is a tradition in JE that at Midnight all the Freshman assault JE college with water guns, water balloons, hoses, whatever water weapons they can find. The other classes defend the college from the invaders :)
