On August 21 1993, Rain made its debut on the Hot Dance Music/Maxi-Single Sales chart, bowing in at #32.
While the inclusion of non-album track Up Down Suite (essentially a dub remix of Erotica outtake Goodbye To Innocence, retitled) and a remix of Waiting provided enough incentive for most fans to pick up the Rain maxi-single, interest apparently did not extend very much further. The maxi-single peaked at #13 the following week and would drop off the Maxi-Single Sales chart altogether after an unusually brief (by Madonna’s standards) six-week run.
Today In Madonna History 
Rain is a brilliant ballad that is home to some of Madonna’s loveliest melodies she’s ever done! A love song written to and for her mother, Rain comforts with exceptional beauty and heartfelt sadness-as if Madonna is about to cry and grieve at any given moment! Quite often, she does exactly that and rock & roll is all the better for it! Madonna is ultimately happy and glad to sing, cry and write Rain for those who will listen to her message of faith, hope and love! With Rain, there’s humanity in Madonna’s Rebel Heart!