Rainy is a distinctive girls' name in United States, ranking #7238 in 2001 with 15 recorded births. The name reached its all-time peak in 2014 with 31 births ranking #4630. Since 1996, the popularity has decreased by 16.7%. In 2001, approximately 1 in every 120,037 girls born was named Rainy. FALLING Recent data shows the name is currently falling.