Updated weather story from the National Weather Service:
Scattered showers and areas of drizzle to persist through 8 pm EDT
(October 31, 2015) – 6 pm EDT: Much of the area will see scattered showers and areas of drizzle persist through 8 pm EDT (Area 1). A narrow, but solid band of moderate rain-showers will work across northwestern Indiana and far southwestern Lower Michigan through 8 pm (Area 2). The back edge of this line may begin to clear far northwestern parts of the area towards the end of trick or treat times in many communities.