Bangladesh's lowest temperature was recorded at 8.3 degrees Celsius in both Tetulia and Chuadanga on Saturday.
This reflected a rise from Friday's minimum of 6.8 degrees Celsius and the season's record low of 6.7 degrees Celsius seen earlier this week in Naogaon.
A mild cold wave continues to grip various districts across northern and western parts of the country, disrupting daily life and sending temperatures plummeting.
The Bangladesh Meteorological Department (BMD) confirms that all 16 districts within the Rajshahi and Rangpur divisions, along with Jashore, Chuadanga, and Kushtia, are currently experiencing this winter chill.
While the intensity decreased from moderate to mild since Friday, the bite of the wind remains significant for the people in these areas.
Meteorologists define a mild cold wave when the mercury stays between 8.1 and 10 degrees Celsius, noting that while Saturday was warmer than previous days, the threshold for a cold wave was still being met.
According to meteorologist Md Tariful Newaz Kabir, temperatures are expected to rise slightly over the next 48 hours starting from this morning (Sunday), providing temporary relief.
However, this trend will be short-lived as the Met office predicts temperatures will begin to drop again from tomorrow.
A more consistent increase in temperature is not anticipated until January 20, meaning the public should remain prepared for further fluctuations in the coming week.
The ongoing weather conditions continue to disrupt normal life, particularly for low-income groups and those living in river basin areas where fog is most dense.
Day labourers and rickshaw pullers report a significant decline in daily earnings in the capital and elsewhere in the country, including the northern region, as people stay indoors to avoid the biting wind.
"The cold is unbearable, and because of the wind, I cannot stay out on the streets for long. If I do not work, I do not eat. But I do not have enough warm clothes to face this weather," said Sumon, a rickshaw puller in the capital's Mirbagh area.
Public health experts have advised caution against cold-related illnesses during this period of temperature instability.
The Met office also said Bangladesh was experiencing the highest frequency of dense fog in the last 20 years.
Rising air pollution levels increased the concentration of fog as suspended particulate matter mixed with moisture in the air.
Meteorologists and environmentalists said air pollution was playing a key role in increasing fog density as dust particles in the atmosphere combined with fog droplets.
Meanwhile, environmental experts warned that the combined effects of El Niño and La Niña were causing noticeable changes in the country's weather patterns.
They cautioned that Bangladesh was gradually moving towards greater exposure to extreme weather events.
Without effective measures, they fear the country's traditional six-season climate cycle could be disrupted in the future.
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