Same here, drove home from Crewe, was 4c in the town centre, dropped to 3c just outside...as I drove my 15 mins home I could see an incoming shower...by the time I got home it was - and I don't use it loosely- blizzard type conditions, SO heavy and -1c. Bonkers!!! My dash cam picked it up, going to copy it for future reference.
It covered most places with a few more cms.