The patron of Fiorano al Serio is Saint George, protector of the parish, celebrated on 23 April in the Church of San Giorgio Martire.
On the evening of 22 April, the eve of the feast, a traditional rite is held right on the churchyard of the sacred building dedicated to the patron saint. The town also holds the Church of Santi Fermo e Rustico and the Cappella degli Alpini.