They'll head for dry land: sidewalks, roads, driveways, and patios. Look for worms on a humid day before it rains, or during a rain-shower.
[header] How to find worms [title] Wait for a rainy fall day. [step] You can find worms at any time, but it will be easiest when it's just rained. The water drives the worms out of the ground into the open air.