The lowest temperate of the country was recorded on Friday in Jashore for the second consecutive day at 8 degrees Celsius.
Mercury dropped to 8 degrees Celsius in Jashore, said a bulletin of Bangladesh Meteorological Department (BMD) issued on Friday morning.
However, Jashore registered the lowest at 07.08 degrees Celsius on Thursday.
The bulletin said mild cold wave was sweeping over the districts of Gopalganj, Rajshahi, Pabna, Panchagarh, Jashore, Chuadanga and Kushtia.
Moderate to thick fog may occur over the country during mid night to morning and it may continue at places Saturday noon. Air navigation, inland river transport and road communication may disrupt temporarily due to thick fog.
Night temperature may rise slightly and day temperature may remain nearly unchanged over the country.
Due to dense fog on the Padma River, ferry services on the Paturia-Daulatdia route was suspended since 3:00 am.
A total of nine flights were diverted from Dhaka's Hazrat Shahjalal International Airport (HSIA) on Friday due to dense fog.
In a message, the airport authorities said four flights were diverted to Chattogram, four to Kolkata in India, and one to Bangkok in Thailand. However, normal flight operation resumed once weather conditions improved.
Frequent diversions during winter have been attributed to low visibility and absence of a Category-2 Instrument Landing System (ILS) at the airport.
The ILS at HSIA was upgraded from Category-1 to Category-2 in the middle of 2025. The advanced system enabled aircraft to take off and land with visibility as low as 300-400 metres, even in dense fog or other adverse weather conditions.
However, the newly-installed Category-2 ILS was severely damaged on October 29 when a Thai Airways aircraft struck it during landing. As a result, the system lost its operational capacity, and flight operations were disrupted.
Passenger suffering related to flight operations may increase throughout the winter season due to dense fog, if the damaged Category-2 ILS is not repaired promptly. Officials at the Civil Aviation Authority of Bangladesh said the system upgradation could take at least three to four months.
As a safety measure, eight more flights were diverted due to dense fog on last Saturday - three to Chattogram, four to Kolkata, and one to Bangkok. Apart from these, many other flights arriving at and departing from HSIA landed and took off later than their scheduled times, according to the officials.
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