Often they say "Snow over the North of England", and it doesn't come.
A reliable indicator that we will get it is when the wind (a wet cold wind) comes in from the north- west.
It powers in across the sea to the north of Northern Ireland, but to the south of the Cumbrian mountains.
Then it has free reign across the Lancashire plain, and our hills are the first ones in its path where it gets forced up into the zone that cools it that bit more and the snow drops out.
Then again, I've seen some almighty drifts created around here by strong easterlies . . . .
(Snow enthusiast Steve, with apologies to those who detest it !)