The visitors were taken to safe areas before flash floods inundated parts of the mountainous city famed for its carved rock ruins, government spokeswoman Jumana Ghunaimat said.
Authorities declared a state of emergency in the Red Sea port city of Aqaba further south as downpours started in the afternoon.
Civil defence divers searched for five people whose car was swept away by floods in the Madaba area, southwest of the capital, state news agency Petra said.
A major highway that links Amman with the south was also closed. The government announced the closure of universities and schools on Saturday and mosques were opened to shelter civilians in areas hit by the floods.