Due to high pressure over the Bay of Bengal, Kolkata experienced its first Nor’wester of the season, sharply bringing the temperature down in March. Thus, the city is experiencing its coldest days and nights in March over the last decade, according to the Kolkata meteorological centre. The early half of February saw humidity in the air. This had led to record rainfall in and around Kolkata, according to weather reports. The city saw a record minimum temperature of 15.5 degrees Celsius. The closest to this temperature was in 2011, when the mercury plummeted to 15.7 deg C in March. The cold wave is likely to continue for a few more days. Siliguri saw the mercury dipping to 9.8 degrees, Purulia 11.4 and Sriniketan 11.8 respectively.