Rainy is a distinctive girls' name in United States, ranking #5192 in 2006 with 27 recorded births. The name reached its all-time peak in 2014 with 31 births ranking #4630. Since 1996, the popularity has increased by 50.0%. In 2006, approximately 1 in every 70,410 girls born was named Rainy. FALLING Recent data shows the name is currently falling.