A low pressure area is likely to form over the Central Bay of Bengal on Tuesday (October 22), according to Bangladesh Meteorological Department.
It also forecast rainfall and thunder showers accompanied by temporary gusty wind at a few places over Khulna, Barishal & Sylhet divisions and at one or two places over Rangpur, Rajshahi, Dhaka, Mymensingh and Chattogram divisions in 24 hours commencing 9am on Saturday.
Day temperature may rise slightly and night temperature may remain nearly unchanged over the country, it added.