Temperatures won't stay this far down long. We will see bit of a recovery by next week. Possibily by the end of the weekend. I'm not talking about highs back in the 70s, but low 60s will certainly be possible.
As for what leads up to that point... that's where things get only slightly interesting.
Other data I have reviewed suggests a better mix early on Saturday morning. Well.. a little more widespread. This is the latest image I could grab. That blue you are seeing is snow... I think the rest should be very close to that or at least a little sleet mixing in with some rain.
Last week this looked a whole lot more impressive, but now... not so much!