The weather department has hinted at the possibility of an overcast sky and light rain in the city for the next two days.
The city experienced drizzle on Tuesday evening under the influence of a cyclonic circulation developing over Odisha.
A weather department official said the circulation was strong and drawing loads of moisture from the Bay of Bengal, leading to formation of clouds over Odisha and Chhattisgarh.
The system will bring moderate rainfall in neighbouring states as well as the western districts of Bengal. The city is likely to receive light rain. “The system will generally have a cooling effect on eastern India,” the official said.
Meteorologists said the skies would start clearing from Friday.
A cool breeze blew through Calcutta early on Tuesday and once again after the sun set. “The breeze is likely to continue,” said a Met department official.
The department, however, has ruled out the possibility of a return of chill even if it rains.
“We consider the weather chilly in Calcutta only if the mercury drops to 16 degrees Celsius or below. That is unlikely to happen even if it rains,” said a senior official of the India Meteorological Department, Calcutta.
On Tuesday, the minimum temperature read 18.6 degrees Celsius, a notch below normal. It is likely to remain so in the next one or two days.
What has made this March different from the sweltering weather Calcuttans brace for around this time of the year is low day temperatures.
Tuesday’s maximum temperature followed the weeklong trend and remained a couple of degrees below normal, at 29.6.
“The clouds are blocking out the sun and reducing solar radiation. So the temperature is in check,” the official said.