Chandigarh, Jan. 5 -- Enveloped in dense fog, the city recorded its coldest day of the season on Sunday as the maximum temperature dropped sharply to 12deg Celsius. This marked a decline of 2.4degC from Saturday's 14.4degC, making it the lowest maximum temperature recorded so far this month and 6.2degC below the seasonal average. The minimum temperature remained nearly unchanged at 9.2degC, dipping marginally by 0.1degC over the past 24 hours and standing 2degC below normal. The maximum and minimum temperature had a difference of only 2.8degC on Sunday. Surender Paul, director of the India Meteorological Department's (IMD) Chandigarh centre, attributed this to obscure weather conditions. The absence of sunlight and continuous cloudy sky has led to the chilly weather. In the coming days, slight change in maximum temperature is expected. The minimum temperature is expected to fall in two days and a subsequent increase thereafter. Till mid January, the weather is expected to remain cloudy and dry. The temperature may fall further during this time, said Paul. During early morning hours of Sunday, the IMD observed shallow fog which turned dense between 8 am to 8.30 am. The misty weather left the rail traffic disrupted, causing delays by 2-3 hours, much to the chagrin of travellers who had to wait while braving the chill. The Kerala Sampark Kranti Express was running late by 2.52 hours. The Sainagar Shirdi Kalka Superfast Express was delayed by 1.56 hours. The Amb Andaura Vande Bharat arrived late by half an hour. The New Delhi Kalka Shatabdi Express was late by 35 minutes in Chandigarh. Till the filing of this story, Prayagraj-Chandigarh Unchahar Express was late by 2.10 hours and Jammu Tawi Sambalpur Express by 1 hour. Several other trains were also running late. No disruption was noticed in the air traffic....