The Bangladesh Meteorological Department (BMD) has forecast heavy to very heavy rainfall at places over Khulna, Barishal and Chattogram divisions in the next 24 hours from 9:00am on Friday.
Light to moderate rain or thundershowers accompanied by temporary gusty winds are likely to occur at most places over Dhaka, Khulna, Barishal and Chattogram divisions and at many places over Rangpur, Rajshahi, Mymensingh and Sylhet divisions, it said in a bulletin.
Cox's Bazar recorded the highest rainfall in the country, with 83mm in the 24 hours until 6:00am on Friday.
Day and night temperatures may remain nearly unchanged across the country.
The monsoon trough extends from Rajasthan, Madhya Pradesh, Uttar Pradesh, Bihar and West Bengal to Assam across the southern part of Bangladesh. One of its associated troughs extends up to the Northwest Bay.
The BMD said the monsoon is active over the southern part of Bangladesh, fairly active elsewhere in the country and moderate over the North Bay.