Welcome message and weather information are missing on home page for Saphira Theme.
"Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental."
SAP Cloud for Customer
Currently this feature is not delivered on customer system.
An alternative option may be to check the SAP Cloud for Customer Customer Influence to submit a request for this feature:
Weather, Welcome Message, Saphira , KBA , LOD-CRM-HOM , Home Page , How To