College Weather?

Question:  Is it harder to study when the weather is gorgeous outside or when it is pouring rain?

Sometimes, the great-weather days are just too much.  The outside lands beckon, the mountain bike or the snow slopes call.  We must go.  But then, when it is raining, we just want to sit by the fire, sip on a hot drink and let our minds wander.  

So, which is better for getting that paper written or those Statistics assignments caught up?  

Or, do we just study at night and play during the daylight hours?

Is sleep deprivation what college is all about?!