Kolkata: As Durga Puja approaches, the possibility of rain during the festival is increasing day by day, the Met Office warned on Monday. According to the Met Department, four districts of south Bengal are likely to receive heavy rain in the next few days. Apart from this, all the remaining districts in south Bengal, including Kolkata, will experience scattered rain from Monday till next Thursday. Meanwhile, scattered light to moderate rains will continue in the run-up to the festival in all districts of south Bengal," a Met Department official said. However, there is no warning of heavy rain in any of the eight districts in north Bengal.