Witches' hats and capes will come in useful if you're trick-or-treating this evening.
There will be wet weather from time to time in many locations, as well as blustery winds - particularly in northern and western counties.
Most of the Midlands, Lincolnshire, Yorkshire, Durham, Tyne and Wear and Northumberland will get away with drier conditions.
It will also get dark earlier with more cloud cover this afternoon - so don't forget the torches!
Models Heidi Klum and Jodie Kidd were among the celebrities who put serious effort into their Halloween costumes this year.
Hundreds of ghostly sightings have been reported on the A75 in Dumfries and Galloway
Owners of the ancient Ram Inn at Wotton-under-Edge in Gloucestershire say that virtually every room in the house has its own ghost.