July 29th may be just another day to the rest of the world, but to the residents of Waynesburg, Pennsylvania, it has a special significance that is passed along from generation to generation.

It all started during the late 1800's at a drugstore located on High Street (the main street in town). An unknown local farmer remarked to William Allison, the pharmacist, that it always seems to rain on July 29th. This comment inspired Allison to keep an annual record of the rainfall on that day. William's brother, Albert, continued recording this mystical event; then, sometime during the 1920's, the record keeping was taken over by the late Byron Daily.