Kolkata Weather Today July 10: South Bengal is experiencing heavy monsoon rainfall which is expected to continue through the weekend. A monsoon trough and cyclonic circulation are pulling moisture inland, causing the downpour. Districts like Kolkata and South 24 Parganas will see significant rain over the next few days. North Bengal's hill districts are also on high alert for heavy precipitation. Fishermen are advised to stay ashore due to rough sea conditions.