The Celsius dipped to 17.7 degrees in the city on Sunday, the lowest this season but still a notch over what is usual for the fag end of November.
A Met official ruled out a dip in the night temperature over the next couple of days.
“A low-pressure area is likely to form over south Andaman Sea around November 29-30. It is likely to become more marked and move west-northwestwards during the subsequent 48 hours,” said an update from the India Meteorological Department in Delhi.
“Though the spot is over 1,000km from Kolkata, any movement of the system towards the eastern coast is likely to inject moisture into south Bengal,” said a Met official.
The Met office has also predicted cloudy weather and snowfall in Kashmir in the first week of December.
“The flow of north-westerly winds from Kashmir is halted during the actual phase of snowfall. After the sky clears, the winds make their way south and reach Bengal via Punjab, Delhi, Uttar Pradesh, Bihar and Jharkhand,” said a weather scientist.
“The winds that are prevalent in Kolkata now are not north-westerlies. Winds from the Northeast are flowing into the city now. Bihar and Jharkhand are not under the grip of the north-westerlies at the moment. As a result, Kolkata is also not witnessing them now,” said Sanjib Bandyopadhyay, the deputy director-general of IMD, Kolkata.
The Celsius has been fluctuating in Kolkata for much of November. Morning walkers have been wearing an added layer of clothing but the heavy-duty woollens are still mostly inside cupboards.
Met officials remained non-committal on the arrival of winter in the city.
Unlike the monsoon, the weather office in Alipore does not announce the onset of winter. There are, however, certain parameters that mark the arrival of the season.
One such parameter is that the minimum temperature has to be 15 degrees or less for at least four days at a stretch.