Donald Decker is a Pennsylvania native who has been surrounded by a phenomenon that enabled him to cause rain to appear around him. It started after his grandfather's death when he was a teenager in February of 1983. He arrived at a friend's house, and while he was in the restroom, was attacked by what he later claimed was his grandfathers spirit. It apparently scratched his forearm. Afterwards, they were all in the living room, and rain started falling in the house. Don and his friends later went to a cafe, where the rain continued to fall without explanation. Don was on a weeks leave from jail to attend his grandfathers funeral while all this was happening. He had been sent to jail for reciveing stolen property and he had to go back to jail to finish his sentence. While he was back in jail, he was sent to a priest after causing it to rain in his jail cell. The priest performed several exorcisms and ceremonies on Don, and eventually, as mysteriously as the rain began, it stopped forever.

Dubbed the Rain Boy in 1983, Donnie Decker was visiting his friends house when he abruptly went into a trance-like state. Immediately after, the ceiling began to drip water and a mist filled the room. His friends immediately called on the landlord who was alarmed by what he was seeing. Some time later, Donnie was at a restaurant with other companions when rain started pouring down their heads. The restaurant owner immediately forced him out. Years later, due to a petty crime, Donnie was put into jail where he caused chaos when rain started to pour down in his cell. After angry inmates complained, Donnie explained that he could make it rain when he wanted to, and proved his point by dumping rain on the jailor on duty. Eventually, he was released from jail and found a job as a cook at a local restaurant. His present whereabouts is unknown as is the cause of the mysterious rain.

Donnie was keeping a secret. His grandfather had been sexually abusing him for years. But he never told anyone. After his grandfather died, he was now free of the abuse. But his family talked about his grandfather like he was some kind of saint. But Donnie knew the truth he was an abuser.

http://theunexplainedmysteries.com/Rain-Man-Don-Decker.html