Bush, so sorry for the lost bees, however, I am in the same boat. That cold front in December, actually 2 fronts back to back, in ARKANSAS we had a negative temps. Yes, I lost hives, I was sick at the loss of bees. Also last winter (2016) I also had 100% survival rate. Then as you experience, whammy, high humidity and super cold air coming straight from Mn to AR. Normal for Ar, is dry northern air.
So I know how ya feel, bummer. Keep going fella, 2017 will be a great year for both of us. You will see, gonna be a great year.
Blessings