GFS says surface temps here are 12 degrees when the precip begins. Then 1.5" of QPF falls before temps rise above 20 degrees.
Acceptable.
Edited: also has -16F here the morning of the 28th.
Best squall of the day hitting here now. I might double my storm total from this morning.
This is a great ob for a mid December afternoon: Snow and blowing snow. Vis 0.5 miles. 17°. Winds 23 G 38.