While we had some snowfall in the Alpha in Old Russia I noticed no real weather patterns for the Tower. Some clouds and the occasional mist, but nothing really substantial. One of the best moments in large simulated environments is weather effects. Rain, fog, snow, and thunder storms would add some nice ambience to the Tower and some of its local bars and covered areas. Also the Vanguard Window has some spectacular vistas that would be fun to see in a rain storm. Some would say why? Of course? But out of all of GTA V's nonsense when a storm crops up I find myself sitting in the redwoods in my car enjoying the artistry used to create the event. Skyrim had this effect as well when a snow storm would end and you could see all of the northern coast from the College. Then it would fade once again into the snow fall. Those little weather effects leave lasting impressions. Hopefully such touches will add to the experience of wandering the Tower and the Hall of Guardians when the full game releases.