A mild cold wave is sweeping Nilphamari, Panchagarh districts and Srimongal and it may abate in 24 hours commencing 9am on Saturday.
The weather may remain dry with a temporary partly cloudy sky over the country, said a regular bulletin of the Bangladesh Meteorological Department (BMD).
Moderate to thick fog may occur at places over the country from midnight till morning, it said.
Night and day temperatures may remain nearly unchanged over the country.
Meanwhile, the ridge of the Sub-continental high extends up to Bihar and the adjoining areas. Seasonal low lies over South Bay.