The current spell of chill, brought on by snowfall in Jammu and Kashmir, is likely to last another four to five days, the weather department said.
Sunday s maximum temperature was 26.1 degrees Celsius and minimum 14 degrees Celsius..
The chill was accompanied by fog on Sunday, which disrupted flights. Officials at the Calcutta airport said 30 outgoing flights and five incoming ones were delayed.
Visibility dropped below 50 metres between 3.50am and 6am, causing the delays, the officials said. The airport has the Category IIIB instrument landing system, which allows flights to operate at a minimum visibility of 50 metres.
Conditions improved after 6am but the domino effect of delays continued almost till noon, an official said.