This reminds me a little of three similar setups in February 2009. The first two were all snow events, the third and final one was a rain to snow event - despite some heavy rain during the day it didn't really thaw much of the lying snow (there was quite a lot of it from the first two events) - then it readily turned to snow after dark and continued most of the night, dropping about 6 inches. But it wasn't the nice snow that had fallen previously. Very wet stuff. That then froze.
Temperature here is 2.7C with a dew point of 1.2. Overcast, feels damp.
We have done well out of similar setups here before, where the triple point passes through will dictate - 50 miles north of that will be the sweet spot as the uppers won't get higher than say -2C/-3C which is enough to support an all snow event. Not if you live a big town or city mind, but I think somewhere like Rutland, lets say Uppingham at about 170m elevation will get the biggest dump.
Cheers!