Istisqaa’ (Rain Prayer):

This prayer is a means of seeking rain from Allaah The Almighty. The Prayer of Rain is ordained during times of drought and times when rain stops to fall.

Its description: 

The Prayer of Rain is like the Prayer of ‘Eed.

Muslim may supplicate Allaah The Almighty for rain in various ways. For instance, he may supplicate Allaah The Almighty in a congregational prayer. He may also supplicate Him by invoking him during the sermon of Jumu‘ah Prayer. Furthermore, it may be by invoking Him with neither prayer nor sermon.