Snowfall is the first foal of Best In the World (Galileo), winner of the Gr.3 Give Thanks S. and the Listed Staffordstown Stud S. and second in the Gr.2 Blandford S. She is a full sister to three other winners by Galileo: Found, winner of the Gr.1 Prix de l'Arc de Triomphe and the Grade 1 Breeders' Cup Turf, Magical Dream, winner of the Gr.3 C. L. Weld Park S., and Divinely, winner of the Gr.3 Flame of Tara S.

Second dam Red Evie (Intikhab) won the Gr.1 Lockinge S. and the Gr.1 Matron S.

Third dam Malafemmena (Nordico).

Found is the dam of Battleground (War Front), winner of the Gr.2 Vintage S. and second in the Grade 1 Breeders' Cup Juvenile Turf.

Best In the World has an unraced 2-year-old full brother to Snowfall named Newfoundland and a yearling colt by Dubawi.