Winter time dry air in the Northeast will add to the evap rate. The air wants to suck up the moisture.
If you boiled off more than expected, your OG will be higher. Too lazy to do the math, but that is a big jump for the extra boil-off (since your brewhouse efficiency in beersmith would have accounted for some boil off). You may have had a higher mash efficiency into the kettle.
If you update the recipe in beersmith to show the evap rate you saw, it'll correct the gravity for your expected 72% efficiency, and you can see how close you were to that.