A cold wave swept through Delhi on Wednesday morning as the minimum temperature dropped to 3.6 degrees Celsius, the lowest this winter, the Met office said. "The minimum temperature was recorded at 3.6 degree Celsius, four notches below the season's average. It is the lowest temperature recorded so far this year," it said. Delhi has been reeling under a cold wave for the past a few days. On December 23, the minimum temperature was recorded at 3.7 degrees Celsius. It is expected to dip to 3.0 degrees Celsius after December 28. Read Also| Jammu temperature: City records season's coldest night at 3.5 degree Celsius The weatherman has predicted clear skies throughout the day on Wednesday and the maximum temperature is expected to hover around 20 degrees Celsius. According to the Met department, humidity level recorded at 8.30 am was 97 per cent.\u00a0 On Tuesday, the minimum temperature had settled at 5.0 degrees Celsius.