Here in my part of NYC we got about 16".
My coop design winterization works fabulously. I have a rubbermaid type shed that's 7.5 ft. x 3 feet. I bought one of those 8 x 8 ft Sears storage tents and put it around the shed. With the shed on one side of the tent, and mye house on the other, and a good 5 ft x 8 ft span of covered grazing space my hens were perfectly happy hanging out in there. Plus, much to my delight, this "greenhousey" set up keeps temps up. The wind is nominal, as in barely there!
At night when it's 22, inside the shed and tent is 30. During the day today with the sun out and an outside temp of 28-30 degrees, it was in the 40's under the tent and I had happy chickens! The tent thingee cost $134 at SEars and I couldn't be happier. Still getting eggs too, and so far, no frozen combs.