There's so many to choose from my honestly I have to go with:
January 6, 2014.
It's so hard to pick a favorite but I would say this is a very memorable one. It's easy to remember big snowstorms or favorite snowstorms, but the way this day transpired was so memorable. Started with the big 11" snowstorm winding down and a 17" of drifty snowpack on the ground. Temperatures started near 30 as the storm ended and the snow had a heavy water content to it. Then I saw one of the craziest post storm temperature drops ever and the roads literally were frozen over in greased snow. There was no way road crews could remove it so it was like driving on ice rinks surrounded by massive snow banks. The temperature got down to -14 by the sunset, and it was an arctic sunset which had sereal colors in the sky. Winds were howling and snow drifting, wind chills were -55 and I remember the biting cold was something I'd never felt. The inside of people's windows were icing. It's crazy to think now that at that time it was really only just the beginning of the historic Winter.