A low pressure area is likely to form over southeast Bay and adjoining area in five days commencing 9 am on Wednesday.
Seasonal low lies over South Bay, extending its trough to North Bay, said a regular bulletin of Bangladesh Meteorological Department (BMD).
Weather may remain dry with temporary partly cloudy sky over the country, having chances of light rain or drizzle at one or two places over Chattogram division.
Cyclonic storm nears as deep depression intensifies over Bay: BMD
Night and day temperatures may fall slightly over the country.
Light to moderate fog may occur at places over the country during late night till early morning, it said.