Question: what to do if rains on halloween?
Answer: Door to door inside. One idea is for all the adults to hide in different rooms around the house and have the kids go trick or treating throughout the home. ... 
Scavenger hunt. ... 
Grab some ponchos. ... 
Stay indoors and watch movies. ... 
Make spooky snacks. ... 
Go out to eat. ... 
Play some Halloween games.