Actually, most "winter blend" diesel at the pump is a combo of 75% #2 and 25% #1. That covers most situations down to sub zero. In the really cold climates, one can get this sort of blend and even buy straight #1 and mix your own cocktail. #1 is substantially higher price than #2, if the price for diesel didn't go up by a significant margin, then it is not #1 at the pump, but a mix, that is if they actually did anything to winterize their diesel. Some outlets are better than others in this regard. But even then, to make sure icing doesn't happen, a good diesel fuel cold weather additive is a good thing. Gelling is only part of the problem. Icing will shut you down just as fast.
I go thru about 21,000 gallons of diesel a year and I hate the winter months dealing with it. I buy a case of filters and a couple 5 gallon pails of additive and deal with it.