
If you are coming from the North I suspect getting up Weston Bank will be a challenge as that is notorious for being bad. It is about 3 or 4 miles from the Show Ground.
That was where I lived as a whipper snapper and we used to go sledging in the fields to the left of the road and it was a hairy decent !
Coming from the South I would suspect if they keep the gritters out from the motorway junction through Stafford and out should be ok but all depends on how much snow and how fast it comes down.