The name Rainie is a girl's name . Rainie and is often added to user-created lists like Girl Names Ending in-ie and discussed in our forums with posts like "New: Movie Title Family Name Game!".
From the experts:
Spelling of Rainey used by Andie MacDowell for her daughter, perhaps reflecting the ie ending of her own name. Rainey is the most popular spelling of the name, given to about 50 girls last year, with half as many called Rainy and a quarter named Rainie.