Find the moonbow schedule at the Kentucky State Parks website. This lists the dates each year that you can view a moonbow due to a full moon. Choose one of those dates to visit Cumberland Falls.
Watch the weather forecast. If the sky is cloudy, you can count on not seeing a moonbow. Wind and fog can also affect the vibrancy of a moonbow. The best weather for seeing the most colorful moonbow is a cool, crisp night in fall or winter.
Find Cumberland Falls State Park. This waterfall is located within the Daniel Boone National Forest, 20 miles southwest of Corbin, Ky., at 7351 Highway 90. Take exit 25 from I-75 south or exit 15 from I-75 north. Signs at the entrance and inside the state park will direct you to parking and the viewing area of the falls.
Wait for the moon to rise. The moonbow will be visible when the moon is high above the mountain and shining on the gorge. This will be anywhere from 7 p.m. on a winter night to 1 a.m. during summer.
Watch at the foot of the falls for the moonbow to appear.