Definitely some cold air behind that storm and probably colder air after the storm after that. Timing the cold air with the storm track is obviously key to this weekend. Certainly some cutter risk, but even a cutter could provide frontside or backside frozen if things work out. This Friday's storm and the associated northern stream low are pretty key to setting the boundary location that the weekend storm will ride along.
12z 3k NAM agrees well with latest HRRRRR runs. Precip fills back in quickly in the next few hours, heaviest precipitation near sunset. Focus S and E of DC.
I know I'm late to the 6z FV3 party, but that looks like a fun 2 weeks. 1-2" Friday, rain-fzra-sleet bomb-snow over the weekend, MECS the middle of next week, and then subzero high temps at the end.