People are dying from extreme heat, which is also killing a large number of chickens and destroying tea plants
Speaker Shirin Sharmin Chaudhury will administer the oath at 10:30am, according to Parliament Secretariat.
Afroz won the by-poll held on June 15 defeating Bangladesh Nationalist Front candidate Saiful Islam Liton.
She secured 183, 629 votes while her rival got only 6,136 votes.
The seat fell vacant since Hiron died of brain hemorrhage on Apr 9.