Light to moderate rain or thundershowers accompanied by temporary gusty wind is likely to occur at most places over Khulna, Barishal and Chattogram divisions, the Met Office said in a bulletin.
Parts of Rajshahi, Rangpur and Dhaka divisions and at a few places over Mymensingh and Sylhet divisions might experience moderately heavy to heavy falls in the next 24 hours starting from 6pm Thursday.
Day and night temperature may rise slightly over the country, the forecast said.
Meanwhile, a mild heat wave is sweeping over Sylhet and Dinajpur may continue.
The Met Office said rainfall activity may decrease in next two days.
The day’s highest temperature was recorded at 37.4 degrees Celsius in Sylhet and minimum temperature 24.5C at Teknaf.
The sun will rise at 5:31am on Friday in Dhaka.