West Bengal is experiencing a severe cold spell, with Kolkata recording its coldest day of the season at 12.6 degrees Celsius on Tuesday and 11 degrees Celsius on Wednesday. Minimum temperatures have dropped significantly across the state, with Purulia recording 7.2 degrees Celsius and Darjeeling reaching 3.4 degrees Celsius. The India Meteorological Department (IMD) forecasts continued cold in sub-Himalayan districts, with potential for light rain or snow, while southern districts may see a slight temperature rise by Friday. Morning fog is expected across the state.